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1

Hip dysplasia and congenital hip dislocation  

International Nuclear Information System (INIS)

In human genetics and orthopedics quite different answers have been given to the question of hereditary transmission and frequency of hip dysplasia in families of children with congenital hip dislocation. We therefore have made roentgenometric measurements of 110 parents of children with congenital hip dislocation. In 25% we found abnormal flat acetabulae, whereas 12% had pathologic deep hips. This may propose a new concept of morphology of congenital hip dysplasia. (orig.)

2

Screening for congenital dislocation of the hip  

International Nuclear Information System (INIS)

Although the prevalence of (idiopathic) congenital dislocation of the hip (CDH) within the Member States of the European Community is not exactly known, it must be considered as a major problem of public health care and protection. By assessment of available data one can assume that between 1 and 2% of all newborns have dislocation or instability of one or both hips. There is a female predominance of 4:1 and some risk factors are known. The reasons of a higher prevalence in some areas are not yet well understood. Most of instable hips will spontaneously become stable within the first days or weeks of life. However, a considerable number of infants (less than 1%) will remain with instable hips which may dislocate. Dislocation either present at birth or as a result of persistent instability leads to subsequent hip deformation. This is a serious event for each affected individual, and is a heavy load on health care and social costs for the public. Treatment of CDH is easy and usually effective when started early, i.e. before the fourth month of life. The earlier treatment is started the easier, shorter, safer and less expensive it is and its impairment on child development and mother-child interaction can be held to a minimum. Screening for CDH is therefore the most important part of health protection in early infancy. However, this paper concludes that neither sonography nor X-ray examinations are appropriate for CDH screening

3

Congenital hip dislocation: Radiological screening or diagnosis?  

International Nuclear Information System (INIS)

Congenital hip dislocation is a perfect example of public health problems: its incidence is high 0.6, to 2% of newborns in France and an early detection allows an easy and successful treatment. The current situation in our country is not satisfactory for several reasons: - Too many children are treated without reasons because of misleading radiological pictures; - Conversely, some dislocations are discovered only at the walking age, the treatment becoming then more difficult and less effective; - Almost 300,000 radiological examinations of the hip for screening are performed each year and among them 100,000 in newborns. This is not satisfactory as it is commonly admitted now that radiological examination at birth is unreliable and frequently misleading. For all these reasons a special working group has been settled up by the General Direction of Health, including physicians of different practices, from different specialities. The conclusion of this group will be published in a special booklet and can be summarized as follows: The group recommends to perform detection of congenital hip dislocation mainly by the clinical examination. This examination may be difficult but it must be performed very early, the first day of life, repeated several times, at the end of the first week and during the first, second, and third month. Every baby in this country must undergo several clinical examinations up to one year of age

4

Informative value of pneumoarthrography of the hip joinr in congenital dislocation of the hip  

International Nuclear Information System (INIS)

Pneumoarthrographic studies were conducted on hip joints in children aged 6 mos-3 yrs. Oxygen was administered in the joint, complications after pneumoarthrography were not observed. The limbus, articular cartilage and ligament of the head of the femur as well as the capsule internal contour were clearly defined in the presence of the gas. In congenital dislocation of the hip the limbus was either hyperplastic or well developed. The hyperplastic and well developed limbus was turned in the articular cavity and caused the narrowing of the entrance in the cotyloid cavity, i.e. the narrowing of the isthmus. The head of the femur was always deformed, the ligament of the head of the femur extended, sometimes thickened occupying the major part of the joint cavity; the capsule was extended, connective tissue formations could be defined in the joint cavity. The results of pneumoarthrography were confirmed in 18 operated children. A high informative value of the method was shown

5

The futility of the roentgen-screening of infants for congenital dislocation of the hip  

International Nuclear Information System (INIS)

Already the very first issue of the journal 'Fortschritte auf dem Gebiet der Roentgenstrahlen' founded in 1897 contains an article by Albert Hoffa which deals with congenital dislocation of the hip. This is an indication that radiology has been concerned with this disorder from its beginning. This paper discusses the incidence of the disease and the ineffectiveness of mass radiological screening

6

Unilateral Congenital Knee and Hip Dislocation with Bilateral Clubfoot – A rare Packaging disorder  

Directory of Open Access Journals (Sweden)

Full Text Available ntroduction: Reduced intrauterine space gives rise to ‘packaging disorder’ which may involve joint dislocations or contractures. We present an unique case where mutiple joints were dislocated involving left congenital knee dislocation (CDK, bilateral congenital hip dislocation (CDH and congenital talipes equino varus (CTEVdeformities. Case Report: A preterm baby boy born to mother with diagnosed oligohydramios presented with left CDK bilateral DDH and CTEV. The knee dislocation was treated first with gradual streaching and weekly above knee cast. At 7th week good flexion was achieved at both knees and abduction splint for DDH (using double diaper with ponseti cast for CTEV was done. At one year follow up all joints were reduced and maintained well with baby able to stand with support. Conclusion: Packaging disorders may present with multiple dislocations and deformities. Early intervention with serial casting and manipulation minimises disability and prevents ambulatory problems. In our case there was a good response to manipulation and serial casting. This differs from cases with inherent pathology like arthrogryposis where response to treatment is not so good. Keywords: Congenital genu recurvatum, Develpmental dysplasia hip, CTEV, Clubfoot, serial manipulation, packaging disorders

Mukesh Tiwari

2013-04-01

7

Pathogeny and natural history of congenital dislocation of the hip.  

Science.gov (United States)

Based on a review of the literature, the authors have made a critical study of several etiological factors. Endogenous factors such as acetabular dysplasia, increased anteversion of the femoral neck, and capsular laxity support the genetic theory but are neither constant nor necessary and are only facilitating factors. The major factor seems to be a mechanical one linked to the position in the uterus: hyperflexion with adduction and external rotation constituting the dislocating foetal posture combined with abnormal pressure on the greater trochanter and leading to expulsion of the head upward and backward. This theory can explain the natural history of C D H which is first, at birth a hip instability followed by two possible evolutions: either persistent luxation becoming irreducible or spontaneous stabilisation leading sometimes to complete healing or to residual abnormalities (subluxation or dysplasia). This concept suggests practical conclusions: the importance of an early diagnosis, the selection of the signs of the hip at risk, the pattern of prevention, the role for non-clinical investigations, the principles of the treatment based on postures, the indications for the different types of treatment. PMID:24456762

Seringe, R; Bonnet, J-C; Katti, E

2014-02-01

8

Automatic measurement system for congenital hip dislocation using a computed radiography  

International Nuclear Information System (INIS)

Acetabular angle which is a diagnostic parameter of congenital hip dislocation has been measured manually in conventional X-ray film system. Using digital image directly provided from a computed radiography, an automatic measurement system was developed for this parameter. The process of the measurement was completed within a reasonable time, and accurate enough. The system was combined with an image database, so that it would be a measurement tool of PACS

9

Differentiated method of physiotherapy for patients with congenital hip dislocation in postoperative rehabilitation period  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The aim of the research was to develop a new rehabilitation method for patients with congenital dislocation of hip in the late postoperative period. It is based on anatomical, physiological, pathogenetic, functional and ontogenetic foundations and prevents coxarthrosis development and progress. Materials. The data from examination and treatment of 71 patients are presented. The main group consisted of 48 children and the comparison group consisted of 23 children. Methods. Data processing was ...

Pozdniakova ?.N.; Kiselev D.A.; Laisheva ?.A.; Gubanov V.V.

2011-01-01

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Surgical treatment of the congenital dislocation of the hip after walking age: open reduction and Salter's osteotomy  

Directory of Open Access Journals (Sweden)

Full Text Available The congenital dislocation of the hip, after the function of weight bearing begins or walking phase requires surgical treatment, and one of the options is the open reduction combined to innominate osteotomy (Salter. In this study, the results of 18 patients, 22 surgically treated hips with congenital dislocation, were evaluated from 1989 and 1995, using innominate osteotomy, by Salter's technique after open reduction. The age of the patients at the time of surgery ranged from 12 to 30 months (age after march, mean age of 19 months. Fifteen were female and 3 were male, 4 patients had bilateral dislocation and in the remaining, 8 had their left hip dislocated and 6 had their right hip dislocated. The results were evaluated according to Dutoit et al.(3 clinical criteria and to Severin(12 radiological criteria, after a mean follow-up of 48 months. Eighteen percent of excellent clinical results (4; 54% of good results (12; 14% of regular results (3 and 14% of bad results(3 were obtained. As to the radiologic criteria, 36% of the hips were classified as excellent (8; 45% as good (10; 5% regular (1 and 14% bad (3. There were 3 cases of re-dislocation which were treated by a different surgical technique. No cases of infection, graft fracture and vascular or nervous injury were reported.

Carvalho Filho Guaracy

2003-01-01

11

New Aspects of Correlation of Free Radical Oxidation and the Severity of Pathological Process in Congenital Dislocated Hip and Degenerative Dystrophic Diseases of Hip Joint in Children  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The aim of the investigation is to prove the correlation of free radical processes and the state of anti-oxidant system, and the severity of pathological process in children with congenital dislocated hip.Materials and Methods. There were examined 143 patients with congenital dislocated hip aged from 4 to 17 years, they were divided into three groups: the 1st group (n=39) — children with noncomplicated disease, the 2nd group (n=47) — children with coxarthrosis, the 3rd group (n=32) — ch...

Strelkova, I. G.; Musikhina, I. V.; Bogosian, ?. B.; Sidorkin, V. G.; Starikova, ?. ?.; Sidorkina, ?. N.; Kusnetsova, V. L.

2012-01-01

12

New Aspects of Correlation of Free Radical Oxidation and the Severity of Pathological Process in Congenital Dislocated Hip and Degenerative Dystrophic Diseases of Hip Joint in Children  

Directory of Open Access Journals (Sweden)

Full Text Available The aim of the investigation is to prove the correlation of free radical processes and the state of anti-oxidant system, and the severity of pathological process in children with congenital dislocated hip.Materials and Methods. There were examined 143 patients with congenital dislocated hip aged from 4 to 17 years, they were divided into three groups: the 1st group (n=39 — children with noncomplicated disease, the 2nd group (n=47 — children with coxarthrosis, the 3rd group (n=32 — children with Legg’s disease. The control group (n=161 included virtually healthy children. The investigations of free radical production level and the condition of anti-oxidant system were carried out in patients’ blood serum, plasma, and erythrocytes. Results. There was revealed statistically significant correlation between the intensity of lipid peroxidation and the degree of manifestation of dystrophic changes in an affected joint. There was registered the activation of anti-oxidant protection systems in children suffering from hip joint pathology due to the necessity of limitation of free radical processes intensity and their maintenance at an adequate level. Conclusion. The indices of lipid peroxidation intensity and anti-oxidant enzymes activity as diagnostic criteria enable to estimate the depth of pathological changes in children with congenital dislocated hip and degenerative and dystrophic diseases of hip joints, and timely perform effective therapeutic interventions to prevent the deformity of femoral head.

I.G. Strelkova

2012-12-01

13

Screening for congenital dislocation of the hip in the newborn: The role of clinical, ultrasonographic and radiographic examination  

International Nuclear Information System (INIS)

The concept of examining all young infants for congenital dislocation of the hip (CDH) dates back to Le Damany in 1914, though it was Ortolani who stimulated widespread clinical screening with the publication of his method of examination in 1948. His technique was improved by Barlow and others and is now often referred to as the Ortolani/Barlow manoeuvre. Meanwhile, following the method of Hilgenreiner, Putti advocated in 1933 radiological screening of all newborn hips. In 1958 Andren and Von Rosen described their new radiological technique in which hip subluxation was provoked prior to x-ray. Although radiological examination has been criticised as a screening method, it is still apparently widely used in Europe, especially in German-speaking countries. More recently dynamic sonographic examination of the hips has been used for neonatal screening

14

Differentiated method of physiotherapy for patients with congenital hip dislocation in postoperative rehabilitation period  

Directory of Open Access Journals (Sweden)

Full Text Available The aim of the research was to develop a new rehabilitation method for patients with congenital dislocation of hip in the late postoperative period. It is based on anatomical, physiological, pathogenetic, functional and ontogenetic foundations and prevents coxarthrosis development and progress. Materials. The data from examination and treatment of 71 patients are presented. The main group consisted of 48 children and the comparison group consisted of 23 children. Methods. Data processing was made by «Statistica 6,0» programme. Normalcy of distribution was estimated by the Shapiro-Wilktest. Hypothesis proof of two means equality was provided by the Wilcoxon signed-ranktest. Correlation analysis was made by definition of the Pearson correlation coefficient and the Spearman»s rank correlation coefficient. Rate difference was considered as a reliable rate if p<0,05. Results. According to the results, a proper short-term gait stereotype formation has been attained as opposed to the routine rehabilitation methods. Conclusion. Due to advantages of the new method, therapy efficiency is extended and reoperation risks are decreased

Pozdniakova ?.N.

2011-06-01

15

The ranking of computed tomography in congenital hip dysplasia and hip dislocation  

International Nuclear Information System (INIS)

A lot of methods of measurement have been developed to record precisely the degrees of luxation and the deviations from the normal form in the hip joints of the child and adult. The orthopaedic surgeon needs those data for a preoperative ''coxometric program'' before performing acetabuloplastic operations with osteotomia, osteotomia of the pelvis and combined operations. Computed tomography yields a series of informations and of possibilities of measurements which can determine the operative procedure in particular. These informations concern among other things the dimensions of the dysplasia of the acetabulum in the horizontal plane with the extension of the posterior lip and the angle of the acetabular opening, furthermore the physiological or pathological congruence between the head of the femur and the acetabulum, the angle of antetorsion of the neck of the femur and, in the small infant, the direct noninvasive imaging of the tube of the capsule with imaging of possible obstacles to reposition. (orig.)

16

Hip CT in congenital dislocation: appearance of tight iliopsoas tendon and pulvinar hypertrophy  

International Nuclear Information System (INIS)

The iliopsoas tendon can interpose between the femoral head and the acetabulum, preventing reduction or stability of reduction of a dislocated hip by a closed method. The tendon produces an infolding of the capsule and labrum. This infolding of the capsule and labrum creates an ''isthmus'' between the capital and the acetabular parts of the capsule. This deformity of the capsule was recognizable on computed tomography (CT) in 10 patients, all of whom had surgical confirmation of the findings. The presence of hypertrophied pulvinar can also be recognized by CT

17

Outcome of one stage combined open reduction, pelvic and derotation femoral osteotomy in congenital dislocated hips of children younger than three years age  

International Nuclear Information System (INIS)

Objective: To determine the outcome of one-stage combined operative management of congenital dislocation of hips in children aged 18-36 months. Methods: The descriptive case series study was conducted at the Department of Orthopaedic Surgery, Jinnah Postgraduate Medical Centre, Karachi, from January 2005 to December 2011. Children aged 18-36 months suffering from congenital dislocation of hips were included. Those with Tonnis stage III and IV were managed with one-stage operative procedure without preliminary traction. The operative procedure included adductor tenotomy, open reduction, capsulorraphy, Salter's osteotomy and a femoral derotation osteotomy. Catteral's 'Test of Stability' was used after open reduction as an indicator for need of pelvic and femoral osteotomies. Follow-up ranged between 1 and 7 years. The patients were evaluated clinically on McKay's criteria and radiologically on Severin's criteria. Klisic's overall rating was used to know mean of the assessments. Results: There were 38 patients with 50 congenital dislocations of hip. There were 26(68.42%) females and 12(31.57%) males with a female-to-male ratio of 2:1. Mean age at the time of operation was 24.26+-7.6 months. Of the total, 12(31.57%) patients had bilateral involvement, 11(28.94%) had right-sided and 15(39.47%) had left- sided involvement. Right side to Left ratio was 1:1.2. At the time of last follow-up, 25(50%) hips behaved excellent on McKay's criteria. According to radiographic classification on Severin's criteria, 24(48%) hips were in excellent class. Avascular necrosis of femoral head was noted in 3(6%) hips, re-subluxation/re-dislocations were observed in 3(6%) hips and 1(2.6%) patient had 1cm femoral lengthening. Conclusion: One-stage open reduction, capsulorrapyhy, Salter's osteotomy and femoral derotation osteotomy without preliminary traction to re-locate congenital dislocation of hips in late presenting children is a safe and highly effective method. It produces a low rate of complication and need for repeat surgery. It reduces the cost of treatment, minimises socio-economic burden and psychological trauma incurred by lengthy hospitalisation of treatment with traction followed by closed reduction. (author)

18

Cost-benefit evaluation of systematic radiological diagnosis of congenital dislocated hip  

International Nuclear Information System (INIS)

The interest of radiological mass screening of congential dislocated hip is still debated. We have tried to evaluate the cost-benefit ratio of radiological detection at the age of 3-4 months, taking into account the socio-economic cost and radiation risk. Assuming a frequency of this disorder of 1% the average cost of treatment of one case detected by X-ray screening at the age of 3-4 months, including the price of X-ray examinations of 99 normal babies is 23.374 FF. The average cost of treatment of a case detected at walking-age, i.e. after 9 months, is 84.230 FF. The cost-benefit ratio is 3.6. In countries where the frequency reaches 2% the cost benefit ratio is 4.57. It also appears from our study that the irradiation of the patient is much smaller when the diagnosis is made earlier. Comparing the slight irradiation delivered to normal infants by this mass screening to the heavy irradiation received by a few individuals whose treatment is started after 9 months, the calculated risk of leukemia or of genetic disorder for the whole population still favours a systematic X-ray film of the pelvis at age 3-4 months. However, if it were decided to make obligatory this mass radiological detection programme during the fourth month of life, this would necessitate a serious effort to train all radiologists to obtain adequate films with the best radiation protection. (orig.)

19

Traumatic hip dislocations in children  

International Nuclear Information System (INIS)

Objectives: To evaluate clinical features, treatment and relationship to the time period between dislocation, reduction and early complications of traumatic dislocation of hip in children. Methods: Case series conducted at Jinnah Post Graduate Medical Centre Karachi from July 2005 to August 2009. Children with traumatic hip dislocation up to fifteen years of age who presented in last four years were included in this study. Their clinical information, etiology, associated injuries, duration, method of reduction and early complications are evaluated through emergency room proforma and indoor record. Follow up of patient was updated in outpatient department. Results: We had eight patients, six boys and two girls. Youngest 2.4 years and eldest was 12 years with mean age of 6.2 +- 3.8 years. All presented with posterior hip dislocation. Etiology was road traffic accident in two and history of fall in remaining six patients. Average duration of time between dislocation and reduction was 19 hours range 3-72 hours. Dislocated hips were reduced under General Anaesthesia in two patients and under sedation analgesia in six patients. No complications were noted in eight cases with mean 18.75 +- 13.23 months follows up. Conclusion: Traumatic hip dislocation in children is not rare. Slight trauma causes dislocation in younger age and immediate closed reduction and Immobilization reduces complications. (author

20

Obturator dislocation of the hip.  

Science.gov (United States)

We describe two patients with obturator dislocation of the hip which was irreducible by described techniques of closed reduction. The first required open reduction using the iliofemoral approach with release of rectus femoris. The second was treated on a traction table which allowed disengagement of the head and, when combined with simultaneous lateral traction, adduction and gradual release of the longitudinal traction, facilitated a smooth reduction. Since the hip is stable in flexion, early mobilisation in an extension-limiting brace avoids the prolonged bed rest traditionally recommended for this injury. PMID:11245517

Toms, A D; Williams, S; White, S H

2001-01-01

 
 
 
 
21

Recurrent spontaneous hip dislocation in a patient with neurofibromatosis type 1: a case report.  

LENUS (Irish Health Repository)

Neurofibromatosis type-1 is a common genetic disorder which often affects the skeleton. Skeletal manifestations of neurofibromatosis type-1 include scoliosis, congenital pseudarthrosis of the tibia and intraosseous cystic lesions. Dislocation of the hip associated with neurofibromatosis type-1 is a rare occurrence and is underreported in the literature.

Galbraith, John G

2011-01-01

22

The surgical treatment for congenital atlantoaxial dislocation  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Congenital atlantoaxial dislocation (CAAD) is one common disease of craniovertebral junction (CVJ) malformations, which diagnosis depends on CT and MRI. The treatment of CAAD is complex, as a result, the corresponding surgical techniques are different, mainly includes anterioposterior combined approach surgery, single anterior approach surgery and single posterior approach surgery. There is also simple posterior decompression surgery, but it seems not convincible. The complications related to...

Wang, Kun; Jian, Feng-zeng

2012-01-01

23

The surgical treatment for congenital atlantoaxial dislocation  

Directory of Open Access Journals (Sweden)

Full Text Available Congenital atlantoaxial dislocation (CAAD is one common disease of craniovertebral junction (CVJ malformations, which diagnosis depends on CT and MRI. The treatment of CAAD is complex, as a result, the corresponding surgical techniques are different, mainly includes anterioposterior combined approach surgery, single anterior approach surgery and single posterior approach surgery. There is also simple posterior decompression surgery, but it seems not convincible. The complications related to different surgical techniques are various, hence we suggest the experienced neurosurgeons to investigate such operations.

WANG Kun

2012-08-01

24

Is congenital talipes equinovarus a risk factor for pathological dysplasia of the hip? : a 21-year prospective, longitudinal observational study.  

Science.gov (United States)

There is controversy whether congenital foot abnormalities are true risk factors for pathological dysplasia of the hip. Previous United Kingdom screening guidelines considered congenital talipes equinovarus (CTEV) to be a risk factor for hip dysplasia, but present guidelines do not. We assessed the potential relationship between pathological dysplasia of the hip and fixed idiopathic CTEV. We present a single-centre 21-year prospective longitudinal observational study. All fixed idiopathic CTEV cases were classified (Harrold and Walker Types 1 to 3) and the hips clinically and sonographically assessed. Sonographic Graf Type III, IV and radiological irreducible hip dislocation were considered to be pathological hip dysplasia. Over 21 years there were 139 children with 199 cases of fixed idiopathic CTEV feet. Sonographically, there were 259 normal hips, 18 Graf Type II hips, 1 Graf Type III hip and 0 Graf Type IV hip. There were no cases of radiological or sonographic irreducible hip dislocation. Fixed idiopathic CTEV should not be considered as a significant risk factor for pathological hip dysplasia. This conclusion is in keeping with the current newborn and infant physical examination guidelines in which the only risk factors routinely screened are family history and breech presentation. Our findings suggest CTEV should not be considered a significant risk factor in pathological dysplasia of the hip. PMID:25371473

Paton, R W; Choudry, Q A; Jugdey, R; Hughes, S

2014-11-01

25

Differentiating subluxation from developmental dislocation of the hip  

Directory of Open Access Journals (Sweden)

Full Text Available The radiological and clinical picture of a developmental hip dislocation and a severe subluxation are identical. According to Leveuf and Wiberg the diagnosis can only be made by arthrography. The differential diagnosis is critical, as treatment differs dependent on the diagnosis. In this study, the diagnosis of subluxation was based on a plain radiograph of the pelvis. A radiograph of the pelvis with the hips abducted at least 45° and internally rotated (AIR view was used to differentiate these two entities. In subluxations, the femoral head will relocate into the acetabulum with perfect or near perfect reconstitution of the Shenton’s line. It will fail to do so in true dislocations. Five patients, mean age 14.6 months (range 9 to 20 months, presented with delayed diagnosis of hip dysplasia. The examination revealed minimal or no limitation of hip abduction, a leg length discrepancy, and a Trendelenburg gait in the three walking age girls. The radiograph suggested a hip dislocation. The diagnosis of hip subluxation was based on the relocation of the femoral head with the abduction/internal rotation radiograph. All were successfully treated with an Ilfeld abduction splint. None had examination with general anesthesia, arthrograms, traction or immobilization in spica cast. Avoiding over diagnosis of hip dislocation in cases of subluxation is important. This is necessary to prevent overtreatment and to accurately assess the results of treatment. The abduction/internal rotation view may achieve this goal while avoiding diagnostic and therapeutic procedures, such as arthrograms, cast immobilization and surgery.

Joao O. Tavares

2012-01-01

26

Cup position alone does not predict risk of dislocation after hip arthroplasty.  

Science.gov (United States)

We used a large prospective institutional registry to determine if there is a 'safe zone' that exists for acetabular component position within which the risk of hip dislocation is low and if other patient and implant factors affect the risk of hip dislocation. Patients who reported a dislocation event within six months after hip arthroplasty surgery were identified, and acetabular component position was measured with anteroposterior radiographs. The frequency of dislocation was 2.1% (147 of 7040 patients). No significant difference was found in the number of dislocated hips among the radiographic zones (±5°,±10°,±15° boundaries). Dislocators Acetabular component position alone is not protective against instability. PMID:25249516

Esposito, Christina I; Gladnick, Brian P; Lee, Yuo-Yu; Lyman, Stephen; Wright, Timothy M; Mayman, David J; Padgett, Douglas E

2015-01-01

27

Total hip arthroplasty in paralytic dislocation from poliomyelitis.  

Science.gov (United States)

This article presents a case of a patient with degenerative hip disease in paralytic dislocation by poliomyelitis. Poliomyelitis is an acute infection disease caused by a group of neurotrophic viruses, which has a special affinity by the anterior horns cells of the spinal cord and for certain motor nuclei of the brain stem. Paralysis is a flaccid type and characteristically paralysis is asymmetrical. It is said that the joints of the affected limb by poliomyelitis are protected from the development of osteoarthritis. Hip dislocation in poliomyelitis is an acquired deformity caused by flaccid paralysis and the resulting muscular imbalance. In young children, when the gluteus maximus and medius muscles are paralyzed and the hip flexors and adductors are of normal strength, eventual luxation of the hip is almost inevitable. Hip osteoarthritis in a limb with poliomyelitis is an unusual entity because these limbs do not support excessive loads. In patients who present with the residual effects of poliomyelitis including degenerative disease and hip dysplastic, surgery is one of the most difficult challenges faced by reconstructive surgeons. In such cases, surgeons should attempt to optimize the component position and choice, surgical approach, and soft tissue tensioning because stability of the prosthesis can be problematic. PMID:19292189

Laguna, Rafael; Barrientos, Jesús

2008-02-01

28

Scintigraphical observation of the femoral head in traumatic hip dislocation  

International Nuclear Information System (INIS)

99mTc-MDP uptake of the femoral head in traumatic hip dislocation of 7 cases was examined by serial bone scintigraphy after reduction. The cases of dislocation were type I (6 cases) and type II (1 case) by the classification of Thompson and Epstein. Five cases with normal healing showed the increased uptake of 99mTc-MDP in the whole femoral head within a few months of the accident. Then, the degree of uptake decreased gradually and returned to the normal level. The roentgenographical changes in the femoral head were observed in 2 cases within 2 years of the accident. One was the mottled sclerotic change and the other was late segmental collapse. These cases showed severe band-like uptake in the femoral neck and circular uptake around the femoral head by early scintigraphy. The findings of those uptake patterns were recognized over 2 years and differed from that of normal healing. It is thought that bone scintigraphy is a useful method for the observation of pathological changes in the femoral head of traumatic hip dislocation. (author)

29

Course of fracture-dislocation of the hip during coma: value of computed tomography  

International Nuclear Information System (INIS)

Based on a case of repeated dislocation of a fracture-dislocation of the hip, despite effective traction in a comatose patient, the authors emphasise the value of computed tomography in the initial assessment of traumatic lesions of the hip. They also stress the value of repeating this examination during the course of the coma

30

Purulent Necrotic Dislocation of the Hip Joint Associated with Umbilical Infection in a Foal  

Digital Repository Infrastructure Vision for European Research (DRIVER)

A 42-day-old heavy draft horse fell into sudden astasia. Significant swelling and heat sensation of the left femoral region were observed. Because of a friction sound in the left hip, we supposed that the hip joint was dislocated or the hip bone was fractured. Computed Tomography (CT) examination showed that the left hip joint was dislocated and the left femoral head was disjunct. We carried out a pathological autopsy, and made a diagnosis of the foal as fracture of the hip bon...

Magata, Fumie; Ishii, Mitsuo; Oikawa, Eri; Furuoka, Hidefumi; Yamada, Kazutaka; Sasaki, Naoki; Shimizu, Syo; Inokuma, Hisashi

2010-01-01

31

Early Reduction for Congenital Dislocation of the Knee within Twenty-four Hours of Birth  

Directory of Open Access Journals (Sweden)

Full Text Available Background: Congenital dislocation of the knee (CDK is a very rare condition that comprisesa spectrum of deformities from subluxation to complete dislocation.The incidence of CDK is estimated at 1 per 100,000 live births, which is 1%of the incidence of developmental dysplasia of the hip (DDH. Moreover,40–100% of patients with CDK have additional musculoskeletal anomalies,the most common being DDH and clubfoot. In general, the diagnosis isestablished immediately after birth according to the position of the kneerecurvatum. Treatment with conservative methods at an early stage is mostlikely to yield successful results. We report here successful treatment of aseries of CDK patients with early reduction.Methods: From July 1990 to June 2007, 19 patients with CDK (affecting 25 kneeswere treated with early reduction. Of these, 6 knees had dislocation, and 19had subluxation. Since 1990, treatment has been guided by a protocol thatconsiders patient age and the severity of the condition. In patients examinedwithin 24 hours of birth, early, direct reduction under gentle, persistent manualtraction was attempted. Birth history and perinatal course were obtainedfrom medical records. Associated musculoskeletal anomalies were observedand treated after reduction of the knee joint. A Pavlik harness was used for atleast 4 months in the concomitant treatment of DDH and CDK. Knee functionwas graded as excellent, good, fair, or poor. Radiographs were used toassess DDH during follow-up.Results: After an average follow-up duration of 4.3 years, 18 patients showed anexcellent or good outcome. One patient, whose knee could not be reduced,had severe multiple anomalies and died 16 days after birth. Fifteen of thenineteen patients had associated musculoskeletal anomalies, including DDHand foot deformity. Two cases of residual hip dysplasia after Pavlik harnessapplication required an acetabular osteotomy.Conclusions: For CDK patients, early and direct closed reduction within 24 hours of birthaffords outcomes graded as either excellent or good.

Chun-Chien Cheng

2010-06-01

32

Deep wound infection after a trochanteric fracture internal fixation presenting with hip dislocation: a case report  

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We report a rare case of posterior hip dislocation after a low energy trauma. The patient sustained a trochanteric fracture in the same hip six months ago, which was fixed using a sliding hip screw and had healed. At surgery a deep wound infection was found and a methicillin-resistant Staphylococcus epidermidis (MRSE) was cultured. After thorough debridement, an excisional arthroplasty was decided. The patient received specific intravenous antibiotics and after six weeks a total hip arthropla...

Tzurbakis, Matheus; Morakis, Emmanouil; Mouzopoulos, Georgios; Lasanianos, Nikolaos; Georgilas, Ioannis

2010-01-01

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Epidemiology of traumatic hip dislocation in patients treated in Ceará, Brazil  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english OBJECTIVE: To describe the epidemiological profile of patients with traumatic hip dislocation treated in our Institute from November/2012 to July/2013. METHODS: A descriptive cross-sectional study based on interviews and involving 43 patients who suffered traumatic hip dislocation was conducte [...] d. RESULTS: The mean age of patients was 34.4 years old and 90.7% were male. Regarding the mechanism of injury, 95% involved traffic accidents. The posterior dislocation of the hip was the most common injury (93%). Associated lesions were observed in 74.4% of patients, hip fractures being the most frequent. The time span between accident and dislocation reduction was less than 6 hours in 37.2% of patients, between 6 and 12 hours in 32.5% and over 12 hours in 30.3%, ranging from 1 hour to 15 days. A fraction of 90.7% of patients was submitted to closed reduction. CONCLUSION: Traumatic hip dislocation affected mostly young adults, victims of traffic accidents. The posterior dislocation of the hip was the most frequent injury and closed reduction was performed in 90.7% of patients. The time span between accident and dislocation reduction was less than 12 hours in most patients. Level of Evidence III, Study of Nonconsecutive Patients.

Luciana Cascão, Lima; Robson Alves do, Nascimento; Victor Monte Tenório de, Almeida; Fernando Antônio Mendes, Façanha Filho.

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Relationship between developmental dislocation of the hip in infant and acetabular dysplasia at skeletal maturity.  

Science.gov (United States)

Previous reports demonstrated 8-60% patients treated for developmental dislocation of hip (DDH) in infancy have residual acetabular dysplasia (AD) at skeletal maturity. AD patients reportedly exhibit abnormal morphology of the pelvis, high rates of comorbid spinal congenital anomalies and high bone mineral density. These physical findings suggest that AD patients have genetic background. We examined the percentage of AD patients with hip pain at skeletal maturity having a history of DDH in infancy and the correlation between the severity of AD at skeletal maturity and history of DDH treatment to investigate the relationship between AD and DDH.A total of 245 patients were radiographically examined for any history of DDH treatment in infancy. The study included 226 women and 19 men with a mean age at examination of 40.7 years (range 17-59 years).Eighty-eight patients (36%) had a history of DDH treatment (DDH group) and the remaining 157 patients (64%) had no history of DDH treatment (non-DDH group). The average age was lower and acetabular angle was larger in the DDH group. There was a significant increasing trend of the percentage of DDH patients associated with the severity of AD classified with CE, acetabular angle, and acetabular roof angle.Our data suggest that there are several AD patients without a history of DDH in Japan, and AD in patients without a history of DDH has different characteristics from AD in patients with a history of DDH. PMID:25569642

Okano, Kunihiko; Yamaguchi, Kazumasa; Ninomiya, Yoshikazu; Matsubayashi, Shohei; Aoyagi, Kiyoshi; Osaki, Makoto; Enomoto, Hiroshi; Takahashi, Katsuro

2015-01-01

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Efficacy of an Abduction Brace in Preventing Initial Dislocation in the Early Postoperative Period after Primary Total Hip Arthroplasty  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We hypothesized that a hip brace may prevent the initial dislocation in the early postoperative period after total hip arthroplasty (THA). We performed a prospective evaluation of the efficacy of a brace in preventing dislocation in 54 primary THAs in 43 patients. All of the patients wore braces for 3 weeks postoperatively. The occurrence of dislocation was evaluated six months postoperatively. There were no cases of dislocation while wearing a brace, while two posterior dislocations occurred...

Junko Sato; Mitsuhiro Takeda; Hideo Noguchi; Yoshinori Ishii; Yoichiro Domae

2012-01-01

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Traumatic posterior dislocation of the hip in a 3-year-old child.  

LENUS (Irish Health Repository)

We report the case of a traumatic posterior dislocation of the hip in a 3-year-old boy. After a fall in the garden, the boy was brought to our emergency department where an x-ray confirmed a posterior dislocation of his right hip. A successful prompt reduction was performed in the operating room under general anesthesia. This uncommon injury represents an orthopedic emergency and requires prompt reduction to lessen the risk of complications including avascular necrosis of the femoral head.

Forde, James C

2012-02-01

37

Traumatic fracture-dislocation of the hip following rugby tackle: a case report  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Posterior fracture-dislocation of hip is uncommonly encountered in rugby injuries. We report such a case in an adult while playing rugby. The treating orthopaedician can be caught unaware and injuries in such sports can be potentially misdiagnosed as hip sprains. Immediate reduction of the dislocation was performed in theatres. The fracture was fixed with two lag screws and a neutralization plate. This led to early rehabilitation and speedy recovery with return to sporting activities by 12 months.

Venkatachalam Santosh

2009-12-01

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Flexion reminder device to discourage recurrent posterior dislocation of a total hip replacement: a case report  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Introduction Recurrent dislocation of a total hip replacement prosthesis is a frustrating complication for both the surgeon and the patient. For positional dislocations with no indications for revision surgery, the current best treatment is physiotherapy, the use of abduction braces and avoidance of unsafe hip positions. Abduction braces can be cumbersome and have poor compliance. We report the successful use of a new lightweight flexion reminder device that can be used to treat people with this condition. Case presentation A 64-year-old British woman experienced recurrent positional posterior dislocation after primary hip replacement, particularly when involved in activities involving unsafe flexion of the operated hip. She disliked using an abduction brace and hence was given a simple 'flexion reminder device' that could be strapped to the thigh. Beyond the safe flexion limit, the padded top end of the device hitched against the groin crease and reminded her not to flex further, to avoid dislocation. She experienced no discomfort in wearing the device continuously throughout the day and was very satisfied. She has had no further dislocations in the 2 years since she began using it. Conclusion In cases of arthroplasty dislocation caused mainly by an unsafe hip position, and with no indication for revision surgery, this new lightweight and easily worn flexion reminder device may be a good option for avoiding such positional dislocations, particularly those caused by unsafe flexion.

Wong King

2008-07-01

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US of the infant hip: A reliable screening method for congenital dysplasia of the hip  

International Nuclear Information System (INIS)

Standardization of US technique and quantification of US findings are the most important problems in the US evaluation of congenital dysplasia of the hip (CDH). Postmorten studies in 15 infants and cross-section anatomic studies have provided insight in US pitfalls in searching for CDH and have helped define a standard coronal plane in which the infant hip should be investigated. A semiquantitative method for evaluation of hip sonographs was used in a prospective study of 150 patients and compared with results of conventional radiographic and physical examinations. US performed in this way had a negative predictive value of 97% and a positive predictive value of 63%. Overall accuracy was 87%. No cases of luxation were missed. The method has inherent limitations and pitfalls, which are demonstrated. Nevertheless, it proved to be a reliable aid in US screening of their patient group for CDH

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The effect of posterior capsule repair upon post-operative hip dislocation following primary total hip arthroplasty  

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Abstract Background Herein, we evaluated, retrospectively, the effect of posterior capsular repair upon postoperative hip dislocation subsequent to total hip arthroplasty (THA) incorporating a posterolateral approach. Methods A total of 181 patients undergoing 204 primary non-complicated THA surgical procedures in the period from January 2000 to October 2005 inclusively were included in this study. The patients were separated into two groups by whether the poste...

Wang Chen-Ti; Tsai Shang-Ju; Jiang Ching-Chuan

2008-01-01

 
 
 
 
41

Wroblewski wedge augmentation for recurrent posterior dislocation of the Charnley total hip replacement.  

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We analysed 68 cases of acetabular augmentation using the Wroblewski wedge for recurrent posterior dislocation of Charnley total hip replacements inserted through a posterior approach. The follow-up was done by postal questionnaire in living patients or by thorough search of case notes in the dead. All hips were followed up either until death or a minimum of 2 years. The average follow-up for the surviving successful group was 35.3 months. Out of 68 hips, 52 (76%) had no further dislocation a...

Madan, S.; Sekhar, S.; Fiddian, N. J.

2002-01-01

42

Entrapment of the acetabular labrum following reduction of traumatic hip dislocation in a child  

Energy Technology Data Exchange (ETDEWEB)

In traumatic hip dislocation, concentric reduction can be prevented by various causes. Soft-tissue interposition, such as entrapment of the acetabular labrum, is a rare but important cause of failed reduction of a hip. Early diagnosis of incomplete reduction due to interposition of soft tissue is important, because delayed treatment is associated with a greater incidence of avascular necrosis of the femoral head and early onset of osteoarthritis. This report describes a case of acetabular labral entrapment following reduction of traumatic hip dislocation in a child. The importance of CT and MRI in arriving at an early diagnosis is emphasized. (orig.)

Chun, K.A. [The Catholic University of Korea Uijongbu St. Mary' s Hospital, Department of Radiology, Uijongbu, Kyunggi-Do 480-130 (Korea); University of Iowa Hospitals and Clinics, Department of Radiology, Iowa City (United States); Morcuende, J. [University of Iowa Hospitals and Clinics, Department of Orthopaedic Surgery, Iowa City (United States); El-Khoury, G.Y. [University of Iowa Hospitals and Clinics, Department of Radiology, Iowa City (United States)

2004-12-01

43

Early intraprosthetic dislocation in a revision dual-mobility hip prosthesis.  

Science.gov (United States)

This article presents a case of early intraprosthetic dislocation of a dual-mobility hip prosthesis after revision total hip arthroplasty for instability. A 70-year-old woman was revised to a dual-mobility cup for multiple hip dislocations. She dislocated the dual-mobility construct twice, which was closed reduced. Postreduction radiographs after the second closed reduction showed that the femoral head was eccentrically positioned within the acetabular shell, raising suspicion for intraprosthetic dislocation or disassociation between the femoral head and the mobile polyethylene liner. After closed reduction, the patient reported a mobile, golf ball-size mass deep to the posterior lateral incision and new onset of crepitus. Magnetic resonance imaging verified complete intraprosthetic dissociation between the femoral head and mobile polyethylene liner, which was located between the gluteus medius and minimus. The dual-mobility cup was revised to a constrained socket with retention of the femoral stem. The patient recovered uneventfully without further instability. PMID:24762847

Banka, Trevor R; Ast, Michael P; Parks, Michael L

2014-04-01

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Acute limb ischemia following closed reduction of a hip arthroplasty dislocation.  

Science.gov (United States)

Hip dislocation is a well-described complication of total hip arthroplasty (THA) and dislocation rates are substantially higher following revision hip arthroplasty. Vascular complications following closed reduction of hip dislocations are exceedingly rare, but a high index of suspicion is essential for patients with underlying vascular abnormalities. Popliteal artery aneurysms are the most common peripheral arterial aneurysms with a prevalence of 1% and they should be suspected in patients with prominent popliteal pulses. This article presents a case of an 84-year-old man with a revision total THA who sustained a posterior hip dislocation. The hip was reduced under conscious sedation using the Bigelow technique. The leg was distally neurovascularly intact based on the clinical exam immediately before and after the reduction. Over the next few hours, the foot became progressively ischemic and an urgent computed tomography angiogram revealed bilateral popliteal artery aneurysms with acute thrombosis of the aneurysm on the affected limb. The patient underwent emergent femoral popliteal bypass using a Dacron supported interpositional graft. The majority of the foot was salvaged but the toes eventually became necrotic. Direct compression of the aneurysm during reduction of the hip dislocation in conjunction with transiently decreased blood pressure from conscious sedation likely resulted in a low flow state within the artery leading to thrombosis of the aneurysm. To our knowledge, this is the first reported case of such an event. This case emphasizes the need for a high index of suspicion for vascular injuries following manipulation of limbs with underlying arterial aneurysms. Reduction maneuvers for hip dislocations should be modified to minimize compression of the popliteal fossa in limbs with vascular abnormalities. Serial postreduction neurovascular exams are essential for identification and prompt management of vascular complications. PMID:20954657

Marsh, Jonathan P; Turgeon, Thomas; Guzman, Randolph

2010-10-01

45

Chronic asymptomatic dislocation of a total hip replacement: a case report  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Introduction Dislocation of a prosthetic hip is the second most common complication after thromboembolic disease in patients undergoing total hip arthroplasty, with an incidence reported as 0.5 to 20%. Although the period of greatest risk for dislocation has been reported to be within the first few months after surgery, late dislocation occurs more commonly then previously thought. Case presentation A 60-year-old man underwent a right Exeter cemented total hip replacement and was subsequently discharged after appropriate follow-up. He next presented 8 years later complaining of pain in the left groin. An anterioposterior radiograph of the pelvis revealed degenerative changes in the left hip and a dislocated right total hip replacement. The dislocated femoral component had formed a neoacetabulum within the ilium, in which it was freely articulating. He remained pain-free on this side, had 5 cm of true leg length shortening with a good range of movement and was very pleased with his hip replacement. He was later placed on the waiting list for a left total hip replacement. Conclusion This case illustrates that a dislocated total hip replacement may occasionally not cause symptoms that cause significant discomfort or reduction in range of movement. The prosthetic femoral head can form a neoacetabulum allowing a full range of pain-free movement. Furthermore it emphasises that with an increased trend to earlier hospital discharge and shorter follow-up, potential complications may be missed. We urge a low index of suspicion for potential complications and suggest that regular review with radiographic follow-up should be made.

Lidder Surjit

2009-08-01

46

Capsule repair may reduce dislocation following hip hemiarthroplasty through a direct lateral approach: a cadaver study.  

Science.gov (United States)

Reported rates of dislocation in hip hemiarthroplasty (HA) for the treatment of intra-capsular fractures of the hip, range between 1% and 10%. HA is frequently performed through a direct lateral surgical approach. The aim of this study is to determine the contribution of the anterior capsule to the stability of a cemented HA through a direct lateral approach. A total of five whole-body cadavers were thawed at room temperature, providing ten hip joints for investigation. A Thompson HA was cemented in place via a direct lateral approach. The cadavers were then positioned supine, both knee joints were disarticulated and a digital torque wrench was attached to the femur using a circular frame with three half pins. The wrench applied an external rotation force with the hip in extension to allow the hip to dislocate anteriorly. Each hip was dislocated twice; once with a capsular repair and once without repairing the capsule. Stratified sampling ensured the order in which this was performed was alternated for the paired hips on each cadaver. Comparing peak torque force in hips with the capsule repaired and peak torque force in hips without repair of the capsule, revealed a significant difference between the 'capsule repaired' (mean 22.96 Nm, standard deviation (sd) 4.61) and the 'capsule not repaired' group (mean 5.6 Nm, sd 2.81) (p < 0.001). Capsular repair may help reduce the risk of hip dislocation following HA. Cite this article: Bone Joint J 2015;97-B:141-4. PMID:25568428

Hughes, A W; Clark, D; Carlino, W; Gosling, O; Spencer, R F

2015-01-01

47

Computed tomography in abnormalities of the hip  

International Nuclear Information System (INIS)

The value of computed tomography in the assessment of abnormalities of the hip is demonstrated with the aid of an anatomical preparation and in patients with, respectively, congenital dislocation of a hip, dislocation of the hip in spina bifida, an acetabular fracture and a Ewing tumour. The anteversion of the acetabulum and femur and the instability index of the hip join can be measured by means of computed tomography. (Auth.)

48

Computed tomography in abnormalities of the hip  

Energy Technology Data Exchange (ETDEWEB)

The value of computed tomography in the assessment of abnormalities of the hip is demonstrated with the aid of an anatomical preparation and in patients with, respectively, congenital dislocation of a hip, dislocation of the hip in spina bifida, an acetabular fracture and a Ewing tumour. The anteversion of the acetabulum and femur and the instability index of the hip joint can be measured by means of computed tomography.

Visser, J.D.; Jonkers, A.; Klasen, H.J. (Rijksuniversiteit Groningen (Netherlands). Academisch Ziekenhuis); Hillen, B. (Rijksuniversiteit Groningen (Netherlands). Lab. voor Anatomie en Embryologie)

1982-06-26

49

Changes of the hip joints associated with chronic subluxation and dislocation: CT and plain radiography analysis  

Energy Technology Data Exchange (ETDEWEB)

Secondary osteoarthritis of the hip joint is a common disease and is frequently followed by chronic subluxation and dislocation. Twenty four cases of the secondary osteoarthritis associated with chronic subluxation and dislocation of the hip joints were evaluated with plain radiography and computed tomography. We retrospectively analyzed 1) the osteoarthritis and calcification of the acetabular labrum, 2) the thickness of the quadrilateral plate of the ilium, and 3) anteroposterior diameter of the acetabulum. The changes of the hip joints in subluxation (n=14) revealed ossification of the acetabular labrum in 12 cases (86%), thickening of the quadrilateral plate of the ilium in 11 cases (78%) but anteroposterior diameter of the acetabulum was not changed. The changes of the hip joints in dislocation (n=10) revealed no evidence of the ossification of the acetabular labrum, thickening of the quadrilateral plate of the ilium in 10 cases (100%) and decreased anteroposterior diameter of the acetabulum. We conclude that CT findings of subluxation and dislocation of the hip joints can be helpful in the evaluation of the secondary osteoarthritis of the hip joints.

Yang, Ik; Ryu, Kyung Nam; Lee, Sun Wha; Choi, Woo Suk; Lee, Eil Seong [Kyung Hee University Hospital, Seoul (Korea, Republic of)

1993-05-15

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Operative treatment of bilateral hip dislocation in children with arthrogryposis multiplex congenita.  

Directory of Open Access Journals (Sweden)

Full Text Available PURPOSE. Arthrogryposis multiplex congenita (AMC is a rare syndrome with multiple joint contractures. It is commonly believed that bilaterally dislocated hips associated with joint contractures should not be reduced, because movement is satisfactory, while open reduction leads to poor results. This report presents our experience with surgical management of bilateral dislocation of hips in children with AMC. METHODS. During the period 1990 to 2000, we performed open reduction on 8 hips of 4 children with AMC. The mean age at surgery was 23 months (range, 5-48 months. Open reduction and capsular plication without any bony procedure were performed in 4 hips (2 patients. De-rotation and varus osteotomy of the femur was performed in 4 hips, and Salter osteotomy of the innominate bone in 2 hips. The average acetabular index was 44 degrees, and the mean centreedge angle was -41 degrees preoperatively. RESULTS. The average follow-up period was 4 years (range, 2-9 years. The average acetabular index and centre-edge angle were 19 and 18 degrees, respectively at the time of last follow-up. All children could walk without support. One child required re-opening for redislocation of hip joint. The clinical results were good in 6 hips and fair in 2 hips, according to Severin's and McKay's classifications. CONCLUSION. Our experience shows that open reduction for bilateral dislocation of hips in children with AMC is a suitable option with generally good results. Surgery performed at earlier age gives the best functional outcome.

Asif S

2004-06-01

51

Irreducible dislocation of the hip in cerebral palsy patients treated by Schanz proximal femoral valgus osteotomy  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Palliative Schanz proximal femoral valgus osteotomy is considered a common option for treatment of irreducible hip dislocation in cerebral palsy. From 1992 to 2005, Schanz osteotomy was indicated on 55 occasions in 35 nonambulatory patients with the quadriplegic form of cerebral palsy aged 9–18. Postoperatively, the main emphasis focussed on clinical presentation, improvement of hip range of motion, and pain relief. X-rays were carried out at three, six, and 12 months postoperatively with ...

Schejbalova, Alena; Havlas, Vojtech; Trc, Tomas

2008-01-01

52

Modified osteotomy (Kanaya's procedure) for congenital proximal radioulnar synostosis with posterior dislocation of radial head.  

Science.gov (United States)

Outcomes of Kanaya's procedure for congenital proximal radioulnar synostosis varied depending on the type of radial head dislocation. In our series of 14 patients with 17 forearms who underwent Kanaya's original procedure, the postoperative total rotation arc of the forearm was unsatisfactory in cases with posterior radial head dislocation. We examined the outcomes with respect to the type of radial head dislocation and radial shaft curvature. Radial shafts with a posterior radial head dislocation had only one curve and the radii of the curve were statistically smaller than those in anterior dislocated or enlocated heads, which had two curves. As a result, we modified the osteotomy site for proximal radioulnar synostosis with posterior radial head dislocation and achieved improved forearm rotation and physiological rotation of the radial head in our latest two cases. PMID:23821677

Sakamoto, S; Doi, K; Hattori, Y; Dodakundi, C; Montales, T

2013-07-01

53

[Preliminary results of surgical treatment of developmental dislocation of the hip in older children].  

Science.gov (United States)

Reduction of developmental dislocation of the hip is difficult to achieve in children after walking age and particularly in older children. In fact, at this age the important retraction of the muscles around the hip associated with a marked acetabular dysplasia and elongation of the joint capsule explain the difficulty and instability of reduction and the frequency of complications. In this study we reviewed retrospectively the clinical and radiological results of 26 developmental dislocations of the hip treated by open reduction, pelvic osteotomy and femoral shortening in 21 children aged more than 5 years. Age at surgery ranged from 5 to 11 years (mean 7.5 years) with a follow-up of 1 to 8 years (mean 2 years 7 months). According to the clinical classification of MC Kay, 17 hips had a good result while 9 hips had a fair or poor result. According to the Severin classification system 18 hips had an excellent and good radiological result. Ten hips developed an avascular necrosis of the femoral head following the reduction. PMID:16383200

Samir, Bouchoucha; Mahmoud, Smida; Jalel, C; Med, Nabil Nessib; Chokri, Ammar; Maher, Benghachem

2005-09-01

54

Cervical vertebral dislocation in a rugby player with congenital vertebral fusion.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Congenital cervical vertebral fusion is an anomaly which decreases the normal range of spinal movement and predisposes to trauma. The case history of a rugby player with a congenital fusion who sustained permanent quadriplegia after dislocation of the lower cervical spine is presented. The mechanism of injury is discussed. A plea is made for routine radiographic examination of the cervical spines of all rugby players in order to detect the presence of vertebral fusion and other conditions whi...

Scher, A. T.

1990-01-01

55

Application of the surgical dislocation approach to residual hip deformity secondary to Legg-Calvé-Perthes disease.  

Science.gov (United States)

Long-term prognosis after Legg-Calvé-Perthes disease (LCPD) depends on the severity of residual hip deformities including a nonspherical femoral head, a short and wide femoral neck, a high riding greater trochanter, and secondary changes in the acetabulum. Hip deformity after healed LCPD may lead to abnormal hip mechanics including femoroacetabular impingement and hip instability secondary to acetabular dysplasia. The surgical dislocation approach has recently been applied to LCPD hip deformity with encouraging short-term results. This approach allows complete dynamic evaluation of the hip joint, identification, and correction of the most common residual deformities. The purpose of this paper is to describe the application of the surgical hip dislocation approach to LCPD deformity and to evaluate the current available literature on the results of this approach to the healed LCPD hip. PMID:23764795

Novais, Eduardo N

2013-01-01

56

Influence of total hip design on dislocation: a computer model and clinical analysis.  

Science.gov (United States)

Dislocation following hip arthroplasty remains problematic. While the etiology of dislocation may be multifactorial, implant system design may play a role. Using a computer aided design program, virtual range of motion of several commonly implanted designs was performed with prosthetic interference representing impingement used as an endpoint. Implants with small diameter head size (22 mm) and a larger trunion geometry (type II taper) demonstrated impingement in flexion at less than 90 degrees , suggesting an increased risk for dislocation. To investigate this clinically, we performed a review of a consecutive series of 254 primary hip arthroplasties performed by a single surgeon using an implant with a type II taper (Biomet, Warsaw, IN). At a minimum 2 year followup, 12 patients with 12 hips (4.8%) had at least one episode of dislocation. Stratified by head size, the dislocation rates were 3.6% for 28 mm, 4.8% for 26 mm, and 18.8% for 22 mm bearings. These findings support the notion that computer aided design modeling of implant systems is useful in evaluating range of motion and this technique could be employed during the design of any new implant system. PMID:16741474

Padgett, Douglas E; Lipman, Joseph; Robie, Bruce; Nestor, Bryan J

2006-06-01

57

MRI assessment of the posterior acetabular wall fracture in traumatic dislocation of the hip in children  

Energy Technology Data Exchange (ETDEWEB)

Traumatic hip dislocations associated with posterior wall fractures of the acetabulum in the pediatric population are in general a consequence of high-energy trauma. After expeditious reduction, instability mandates for further diagnosis and intervention. Plain radiographs or computerized tomography (CT) scans can misjudge the involvement of the posterior wall of the acetabulum due to the partially calcified nature of the pediatric bone. We present two cases of pediatric traumatic hip dislocation associated with posterior wall fractures of the acetabulum. In both cases, obvious postreduction instability was noted without conclusive findings of etiology on plain X-rays or CT scans. Magnetic resonance imaging (MRI) disclosed an extensive posterior wall traumatic involvement in both cases and helped to decide in favor of open reduction of the hip and internal fixation of the posterior wall fragment. (orig.)

Rubel, Ivan F.; Kloen, Peter; Helfet, David L. [Department of Orthopaedic Surgery, Weill Medical College of Cornell University, New York, NY (United States); Potter, Hollis G. [MRI Department, Diagnostic Radiology, Hospital for Special Surgery, New York (United States)

2002-06-01

58

MRI assessment of the posterior acetabular wall fracture in traumatic dislocation of the hip in children  

International Nuclear Information System (INIS)

Traumatic hip dislocations associated with posterior wall fractures of the acetabulum in the pediatric population are in general a consequence of high-energy trauma. After expeditious reduction, instability mandates for further diagnosis and intervention. Plain radiographs or computerized tomography (CT) scans can misjudge the involvement of the posterior wall of the acetabulum due to the partially calcified nature of the pediatric bone. We present two cases of pediatric traumatic hip dislocation associated with posterior wall fractures of the acetabulum. In both cases, obvious postreduction instability was noted without conclusive findings of etiology on plain X-rays or CT scans. Magnetic resonance imaging (MRI) disclosed an extensive posterior wall traumatic involvement in both cases and helped to decide in favor of open reduction of the hip and internal fixation of the posterior wall fragment. (orig.)

59

Traumatic anterior dislocation of the hip associated with ipsilateral femoral shaft fracture in a child: A case report.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Traumatic anterior dislocation of the hip joint in children is rare, and only one case with ipsilateral femoral fracture has been reported in Japan. We report a case of such dislocation and a review of the literature. The patient was a 31-month-old girl who was injured in a car accident while asleep on a tilted front passenger seat. Radiographic examination showed dislocation of the right obturator foramen and transverse fracture of the ipsilateral femoral shaft. The dislocation of the right ...

Yamamoto K.; Ko M; Masaoka T; Shishido T.; Imakiire A

2004-01-01

60

The dislocating hip replacement - revision with a dual mobility cup in 56 consecutive patients  

DEFF Research Database (Denmark)

INTRODUCTION: Recurrent dislocations of hip replacements are a difficult challenge. One treatment option for recurrent dislocations is the use of a dual mobility cup. The aim of this study was to retrospective investigate the effect of dual mobility cups as a treatment for recurrent dislocations in a consecutive series. Materials and. METHODS: 56 consecutive patients were revised in the period November 2000 to December 2010. The mean age at revision was 72 years (SD 11, range 37-92)) and median number of dislocations before revision surgery were 4 (IQR, 2-11). In all cases, revision was made with a Saturne dual mobility cup (Amplitude, Neyron, France). The mean follow-up period was 44 months (SD 30, range 0.1-119). RESULTS: One patient (1.8%) experienced a re-dislocation. Three patients (5.3%) had to be revised. One due to disintegration between the femoral head and inner shell, one due to loosening of the acetabular component, and one due to infection. Harris Hip Score improved from a mean of 76 before index surgery to 87 within one year after index surgery. CONCLUSION: This study advocates the use of a dual mobility cup for treatment of recurrent dislocations of THR. However, studies with a longer follow up are needed in order to evaluate implant survival.

Jakobsen, Thomas; Kappel, Andreas

2014-01-01

 
 
 
 
61

Dislocation rate after hip arthroplasty within the first postoperative year: 36 mm versus 28 mm femoral heads  

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Dislocation is a common and important complication of total hip arthroplasty (THA). Larger femoral heads may reduce the risk of dislocation and improve the range of movement. The aim of this study was to compare the relative risk (RR) of dislocation during the first year after THA between implants with 28 mm and 36 mm femoral heads. 198 consecutive hips with 28 mm femoral head (Group-28) and 259 hips with 36 mm femoral head (Group-36) were studied. The patients were assessed preoperatively an...

Crova, Maurizio; Massazza, Giuseppe; Bistolfi, Alessandro

2011-01-01

62

Imaging rounds #103. Myositis ossificans in association with congenital radioulnar synostosis and congenital anterior radial head dislocation.  

Science.gov (United States)

Although the initial trauma was minimal in this unusual case of bilateral congenital radioulnar synostosis and anterior radial head dislocation associated with myositis ossificans, a progressive decrease in elbow ROM ensued. Manipulation under general anesthesia was performed to improve flexion and extension of the involved elbow. This manipulation most likely initiated or enhanced the process of myositis ossificans in the elbow. Final treatment consisted of reassurance and active ROM exercises, with resolution of symptoms. PMID:2216544

Luke, D L; Manske, P R; Gilula, L A

1990-08-01

63

Salvaging unstable or recurrent dislocating total hip arthroplasty with the constrained acetabular component.  

Directory of Open Access Journals (Sweden)

Full Text Available PURPOSE: To review cases of implantation of constraining acetabular components for unstable or recurrent dislocating total hip arthroplasty at the Department of Orthopaedics, Concord Hospital, Sydney. METHODS: A retrospective analysis was performed on prospectively collected data of 13 consecutively enrolled patients. RESULTS: From 1989 to 2000, 13 constraining acetabular components were implanted into 13 patients as a revision procedure. The surgical approach for the implantation of the constrained liner was posterolateral in 11 cases; a modified Hardinge approach was applied in 2 cases. The mean clinical follow-up duration was 43 months (range, 14-121 months and the mean age at the time of surgery was 73 years (range, 52-84 years. No patients were lost to follow-up. Indications for using the constrained acetabular component were recurrent dislocation in revision hip replacements (n=8, and intra-operative instability (n=5. There were no episodes of dislocation of the constrained arthroplasty. In 7 cases, the constrained component was implanted into a previously well-fixed shell. CONCLUSION: We recommend the judicious use of the constrained component in cases of hip instability during or after total hip arthroplasty when other methods are not successful.

Stanton DA

2002-12-01

64

Efficacy of an Abduction Brace in Preventing Initial Dislocation in the Early Postoperative Period after Primary Total Hip Arthroplasty  

Directory of Open Access Journals (Sweden)

Full Text Available We hypothesized that a hip brace may prevent the initial dislocation in the early postoperative period after total hip arthroplasty (THA. We performed a prospective evaluation of the efficacy of a brace in preventing dislocation in 54 primary THAs in 43 patients. All of the patients wore braces for 3 weeks postoperatively. The occurrence of dislocation was evaluated six months postoperatively. There were no cases of dislocation while wearing a brace, while two posterior dislocations occurred 8 and 12 days postoperatively while picking something up from the floor without a brace in so-called provocative positions. The results of this study suggest that a hip brace helps patients to recognize careless provocative positions and prevents the initial hip dislocation in this period instead of usual postoperative management for an average of 6 weeks after discharge, such as a high toilet seat, restricted hip flexion in the activities of daily living, use of a reacher or grabber, an abduction pillow, and a high chair.

Junko Sato

2012-03-01

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Dual mobility cups for preventing early hip arthroplasty dislocation in patients at risk: experience in a county hospital  

Directory of Open Access Journals (Sweden)

Full Text Available Dislocation remains a major concern after hip arthroplasty. We asked whether dual mobility cups (DMC would improve early hip stability in patients with high risk of dislocation. We followed 34 patients (21 females, 13 males treated between 2009 and 2012 with cemented DMC for hip revisions caused recurrent hip prosthetic dislocation or as a primary procedure in patients with high risk of instability. Functional outcome and quality of life were evaluated using Harris Hip Score and EQ-5D respectively. We found that the cemented DMC gave stability in 94%. Seven patients (20% were re-operated due to infection. One patient sustained a periprosthetic fracture. At follow-up (6 to 36 months, mean 18, the mean Harris hip score was 67 (standard deviation: 14 and mean EQ-5D was 0.76 (standard deviation: 0.12. We concluded that treating patients with high risk of dislocation with DMC can give good stability. However, complications such as postoperative infection can be frequent and should be managed carefully.

Göran O. Sjödén

2013-06-01

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Propensity for hip dislocation in normal gait loading versus sit-to-stand maneuvers in posterior wall acetabular fractures.  

Science.gov (United States)

Treatment of posterior wall (PW) fractures of the acetabulum is guided by the size of the broken wall fragment and by hip instability. Biomechanical testing of hip instability typically is done by simulating the single-leg-stance (SLS) phase of gait, but this does not represent daily activities, such as sit-to-stand (STS) motion. We conducted a study to examine and compare hip instability after PW fractures in SLS and STS loading. We hypothesized that wall fragment size and distance from the dome (DFD) of the acetabulum to the simulated fracture would correlate with hip instability and, in the presence of a PW fracture, the hip would be more unstable during STS loading than during SLS loading. Incremental PW osteotomies were made in 6 cadaveric acetabula. After each osteotomy, a 1200-N load was applied to the acetabulum to simulate SLS and STS loading until dislocation occurred. All hip joints in the cadaveric models were more unstable in STS loading than in SLS loading. PW fragments at time of dislocation were larger (Pinstability in STS loading than in SLS loading. In STS loading, hips dislocated with a PW fracture size of 33% or more and a DFD of 20 mm or less. PMID:24078965

Marmor, Meir; McDonald, Erik; Buckley, Jenni M; Matityahu, Amir

2013-09-01

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Luxação congénita do joelho: que abordagem? Revisão teórica e experiência de um Hospital Pediátrico / Congenital dislocation of the knee: what approach? Review and experience of a pediatric hospital  

Scientific Electronic Library Online (English)

Full Text Available SciELO Portugal | Language: Portuguese Abstract in portuguese Introdução e objectivos: A luxação congénita do joelho é uma anomalia rara que se integra no grupo das deformidades de hiperextensão do joelho. A sua incidência é cerca de 1% da displasia do desenvolvimento da anca. Associa-se com frequência a outras anomalias músculo-esqueléticas, sendo as mais com [...] uns a displasia do desenvolvimento da anca e o pé equino-varo. Em geral, o diagnóstico é estabelecido imediatamente após o nascimento. O tratamento pode ser conservador ou cirúrgico, sendo que o primeiro habitualmente resulta em melhor prognóstico. Os autores relatam a sua experiência no tratamento da luxação congénita do joelho e os resultados favoráveis nos doentes submetidos a redução conservadora imediata nas primeiras horas de vida. Material e métodos: Realizou-se um estudo retrospectivo descritivo com base na análise dos processos clínicos dos doentes com o diagnóstico de luxação congénita do joelho tratados no Serviço de Ortopedia Pediátrica do Hospital Maria Pia, entre 1990 e 2008. Resultados: Apresentam-se quatro casos de luxação congénita do joelho: três tratados por métodos conservadores e um submetido a tratamento cirúrgico. Discussão e conclusões: Os autores salientam a importância da redução imediata da luxação nas primeiras horas de vida como fronteira de atitude terapêutica e prognóstico, onde o pediatra pode assumir um papel determinante no reconhecimento e referenciação atempadas. Destacam a importância do exame ortopédico completo, para exclusão de outras deformidades associadas e a aparente irrelevância da patologia de base para o sucesso do tratamento conservador precoce. A propósito dos casos clínicos apresentados, faz-se uma revisão sumária desta patologia. Abstract in english Background and objective: Congenital dislocation of the knee is a rare anomaly that includes a group of hyperextension deformities of the knee. Its incidence is about 1% of the developmental dysplasia of the hip. It is often associated with other musculoskeletal anomalies, the most common being the [...] developmental dysplasia of the hip and clubfoot. In general, the diagnosis is established immediately after birth. Treatment can be conservative or surgical, and the first one usually results in better prognosis. The authors report their experience in the treatment of congenital dislocation of the knee and the favorable outcome in patients undergoing early reduction. Material and methods: A retrospective descriptive study was conducted based upon the analysis of medical records of patients diagnosed with congenital dislocation of the knee, treated at the Department of Pediatric Orthopedics of Hospital Maria Pia between 1990 and 2008. Results: Four patients with congenital dislocation of the knee are presented: three treated by conservative methods and one that required surgery. Discussion and conclusions: The authors highlight the importance of early reduction of congenital dislocation of the knee in the first hours of life as a frontier of therapeutic approach and prognosis. Pediatricians can play a key role in timely recognition and referral. They also emphasize the importance of complete orthopedic examination in order to exclude other associated deformities, and the apparent irrelevance of the underlying pathology for the success of early conservative treatment. A brief review of congenital dislocation of the knee is presented.

Luísa Neiva, Araújo; Eduardo, Almeida.

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Traumatic anterior hip dislocation associated with anterior and inferior iliac spines avulsions and a capsular–labral lesion  

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A 16-year-old man had a traumatic accident during motor-cross racing and sustained an anterior hip dislocation with fracture of anterior superior and anterior inferior iliac spines. The hip was emergently reduced and further imaging was obtained to evaluate the lesion and bony fragments. Computed tomography confirmed the presence of two large fragments and a small fragment from the antero-inferior acetabulum. The patient underwent open reduction and internal fixation of the iliac spines and t...

Reggiori, A.; Brugo, G.

2008-01-01

69

Radiographic Prediction of the Results of Long-term Treatment with the Pavlik Harness for Developmental Dislocation of the Hip  

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In 1957, Pavlik introduced the Pavlik harness as a useful treatment for developmental dislocation of the hip (DDH), and subsequent studies have documented favorable outcomes among patients treated with this device. However, there are only a few articles reporting how early radiographic measurements can be used to determine the prognosis after treatment with the Pavlik harness. In this study, 217 hips from 192 patients whose DDH treatment with the Pavlik harness was initiated before they we...

Tetsunaga, Tomonori; Minagawa, Hiroshi; Mitani, Shigeru; Endo, Hirosuke; Ohmori, Takao; Ozaki, Toshifumi

2009-01-01

70

A cadaveric study of posterior dislocation after total hip replacement - Effects of head diameter and acetabular anteversion  

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The size of the femoral head and acetabular anteversion are crucial for stability in total hip replacements. This study examined the effects of head diameter and acetabular anteversion on the posterior instability after total hip replacement in an in vivo setting. The acetabular shell was inserted at 0-20° of anteversion at five degree intervals. By using different head sizes (28 mm, 32 mm, 36 mm), the degrees of dislocation were recorded by computer navigation. The 36-mm group consistently ...

Ng, Fy; Zhang, Jt; Chiu, Ky; Yan, Ch

2011-01-01

71

A cadaveric study of posterior dislocation after total hip replacement—effects of head diameter and acetabular anteversion  

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The size of the femoral head and acetabular anteversion are crucial for stability in total hip replacements. This study examined the effects of head diameter and acetabular anteversion on the posterior instability after total hip replacement in an in vivo setting. The acetabular shell was inserted at 0–20° of anteversion at five degree intervals. By using different head sizes (28 mm, 32 mm, 36 mm), the degrees of dislocation were recorded by computer navigation. The 36-mm group consiste...

Ng, Fu Yuen; Zhang, Jiang Tao; Chiu, Kwong Yuen; Yan, Chun Hoi

2010-01-01

72

Incongruent reduction following post-traumatic hip dislocations as an indicator of intra-articular loose bodies: A prospective study of 117 dislocations  

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Full Text Available Background: Intra-articular loose bodies following simple dislocations can lead to early degeneration. Nonconcentric reduction may indicate retained loose bodies and offer a method to identify patients requiring exploration so that this undesirable outcome can be avoided. Materials and Methods: One hundred and seventeen consecutive simple dislocations of the hip presenting to the hospital from January 2000 to June 2006 were assessed for congruency after reduction by fluoroscopic assessment of passive motion in the operating room as well as with good quality radiographs. Computerized tomography (CT scan with 2-mm cuts was done for confirmation of reduction and to identify the anatomy of loose bodies. Patients with nonconcentric reduction underwent open exploration to identify the etiology of the dislocation and for removal of loose bodies. Thomson and Epstein clinical and radiological criteria were used to assess the outcome. Results: Twelve of the one hundred and seventeen (10% dislocations had incongruent reduction, which was identified by the break in Shenton?s line and increase in medial joint space in seven patients, increase in the superior joint space in three patients, or increase in the joint space as a whole in two patients. CT scan identified the origin of the osteocartilaginous fragment as being from the acetabulum in six patients, the femoral head in four, and from both in one. One patient had an inverted posterior labrum. Following debridement, congruent reduction was achieved in all patients. At an average follow-up of 5 years (range: 2 years 5 months to 8 years, the outcome as evaluated by Thompson and Epstein clinical criteria was excellent in eleven cases and good in one case; the radiological outcome was excellent in eight cases and good in four cases. Conclusions: Intra-articular loose bodies were identified by nonconcentric reduction in 12 out of 117 patients with simple hip dislocation. Careful evaluation by fluoroscopy and good quality radiographs are indicated following reduction of hip dislocations.

Karthik K

2011-01-01

73

Adult Congenital Permanent Bilateral Dislocation of the Patella with Full Knee Function: Case Report and Literature Review  

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Congenital permanent dislocation of the patella is a rare disorder of the knee joint in which the patella is permanently displaced, even in extension and is fixed on the lateral aspect of the femoral condyle. The dislocation is irreducible without surgical techniques. This rare condition is usually detected within the first decade of life, because of inability of active extension in the knee and impaired ability during walking. This report presents an unusual case of a 51-year-old man with bi...

Alessandro Bistolfi; Giuseppe Massazza; David Backstein; Stefano Ventura; Raul Cerlon; Maurizio Crova

2012-01-01

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Patient follow up screening evaluations. Examples with regard to congenital hip dislocation and congenital heart disease  

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OBJECTIVE: To discuss the merits of the patient follow up study design for the evaluation of some specific mass screening programmes. DESIGN: Theoretical evaluation illustrated by two examples. SETTING: Department of Public Health Erasmus University Rotterdam. MAIN RESULTS: The gold standard for evaluation of favourable effects of screening is the randomised controlled trial (RCT). Application of an RCT, however, is ...

Juttmann, R. E.; Hess, J.; Maas, P. J.; Oortmarssen, G. J.

2001-01-01

75

C1-C2 rotary subluxation following posterior stabilization for congenital atlantoaxial dislocation.  

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Full Text Available The authors report a rare complication of C1-C2 rotary subluxation in two children following posterior stabilization for congenital atlantoaxial dislocation (AAD. A patient, with mobile AAD, underwent Brook?s C1-C2 fusion while the other, with fixed AAD, underwent transoral decompression followed by Jain?s occipitocervical fusion. A pre-existing ligamentous laxity associated with an asymmetrical wire tightening or slippage of the wires due to rotation of the neck in the former, and the drilling of the C1-C2 lateral joints during the transoral procedure in the latter, could have contributed to the rotary subluxation. Both patients presented with persistent torticollis due to fusion in an asymmetrical position with dislocated facet joints. Rotary C1-C2 subluxation, when coexisting with anterior dislocation, has the potential to cause severe and occasionally fatal cord compression. Well defined criteria to diagnose this entity by conventional radiology exist, however, due to the overlap of anatomy, the condition is often overlooked. In the present study, three dimensional reconstruction images using helical computerized tomography were very useful in delineating the subluxation and in planning its surgical reduction and arthrodesis.

Behari S

2000-04-01

76

Neurovascular lesion after total hip arthroplasty in congenital hip dysplasia: Case report  

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Full Text Available Introduction. Nowadays, the total hip arthroplasty is a very frequent surgical intervention. In some cases, vascular and nerve injuries may happen around the hip with total hip arthroplasty. Although they are very rare, they may be very dangerous for the patient in some cases. This paper presents a case of a female patient, in whom the nervous fibularis lesion was detected after the total hip arthroplasty, and the occlusion of the iliac femoral artery was revealed later during physical therapy. Case Report. We described a case of a 32-year-old female patient, in whom the nervous fibularis lesion was detected after the total hip arthroplasty. The patient was referred to a ward for physical therapy. On the 19th postoperative day, she felt a vigorous ache and numbness on the left operated leg during stimulation of the paretic fibular musculature. Clinically weak inguinal arterial pulse was detected. After the examination, iliac-femoral occlusion was diagnosed. The patient was referred to the vascular surgeon. In the next few months, she was treated conservatively and eventually underwent surgery. The revascularization was achieved with a satisfactory effect. A year after the total hip replacement, the patient continued with rehabilitation and physical treatment, which lasted one and a half month and had an incomplete functional result - the patient walked with a walking stick and had weak fibular musculature of a severe degree. The vascular status of the leg was good. Conclusion. In this case, neurovascular lesions led to an incomplete functional recovery of the patient and compromised the expected treatment outcome. According to the scoring system used to assess the functionality, the result was marked as poor.

Stojkovi?-Jovanovi? Tatjana

2013-01-01

77

Evaluation of the effect of the reduction of the hip spastic dislocation in adolescent and young adult with cerebral paralysis  

International Nuclear Information System (INIS)

We present the results obtained in the Instituto de Ortopedia Infantil Roosevelt for the treatment of the hip dislocation in adolescent patients and young adults with spastic cerebral palsy with the open reduction of the hip, accompanied by femoral osteotomy and, if as necessary, pelvic osteotomy. 14 hips (10 patients) were intervened from January of 1996 to July of 2003. Pain was completely released in 54 percent and improved in 36 percent of cases. Abduction improved in 63 percent of patients allowing the perinea cleaning in 63 percent and better tolerance to scar in 64% of the cases. Our complications were one patient developed a sacred pressure ulcer with the spica cast treated with a free flap transposition; one hip had redislocation at 31 months from surgery; another hip had instability without clinical repercussion; one patient had a not displaced supracondylar femoral fracture treated with immobilization. The results of our study showed that the open reduction of the spastic hip in adolescents and young adults is a procedure that improves, in most of the cases, the stability, mobility and pain of the hip and provides better quality life for these patients

78

Avascular necrosis as a complication of the treatment of dislocation of the hip in children with cerebral palsy.  

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We investigated the incidence and risk factors for the development of avascular necrosis (AVN) of the femoral head in the course of treatment of children with cerebral palsy (CP) and dislocation of the hip. All underwent open reduction, proximal femoral and Dega pelvic osteotomy. The inclusion criteria were: a predominantly spastic form of CP, dislocation of the hip (migration percentage, MP > 80%), Gross Motor Function Classification System, (GMFCS) grade IV to V, a primary surgical procedure and follow-up of > one year. There were 81 consecutive children (40 girls and 41 boys) in the study. Their mean age was nine years (3.5 to 13.8) and mean follow-up was 5.5 years (1.6 to 15.1). Radiological evaluation included measurement of the MP, the acetabular index (AI), the epiphyseal shaft angle (ESA) and the pelvic femoral angle (PFA). The presence and grade of AVN were assessed radiologically according to the Kruczynski classification. Signs of AVN (grades I to V) were seen in 79 hips (68.7%). A total of 23 hips (18%) were classified between grades III and V. Although open reduction of the hip combined with femoral and Dega osteotomy is an effective form of treatment for children with CP and dislocation of the hip, there were signs of avascular necrosis in about two-thirds of the children. There was a strong correlation between post-operative pain and the severity of the grade of AVN. Cite this article: Bone Joint J 2015;97-B:270-6. PMID:25628294

Koch, A; Jozwiak, M; Idzior, M; Molinska-Glura, M; Szulc, A

2015-02-01

79

Spontaneous recurrent dislocation after primary Birmingham hip resurfacing: a rare complication in a 44-year-old man.  

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Dislocation is a rare complication of hip resurfacing in young people. This is thought to be due to the stability imposed by a large-diameter head [Stulberg BN, Trier KK, Naughton M, et al. Results and Lessons Learned from a United States Hip Resurfacing Investigational Device Exemption Trial. J Bone Joint Surg Am 2008;90:21]. We report an isolated case 1 week post-Birmingham hip resurfacing in a 44-year-old man without any history of trauma or infection. We note that due to massive periacetabular and femoral neck osteophyte formation and loss of normal bony anatomical landmarks, the version of the acetabular component may have been slightly retroverted. Due to marked narrowing of the femoral neck and head proximally, a cone-shaped proximal femur was found and felt to be unsuitable for direct resurfacing without prior shortening to allow fitting of the appropriate-sized Birmingham hip resurfacing femoral component. This was done successfully, but resulted in slightly reduced femoral neck offset of approximately 10 mm, compared to the native hip. We suspect this reduced offset contributed significantly to the 2 dislocations. We recommend careful preoperative planning and case selection to avoid this complication in similar patients. PMID:19464846

Nall, Amy; Robin, Joseph

2010-06-01

80

Traumatic anterior dislocation of the hip associated with ipsilateral femoral shaft fracture in a child: A case report.  

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Full Text Available Traumatic anterior dislocation of the hip joint in children is rare, and only one case with ipsilateral femoral fracture has been reported in Japan. We report a case of such dislocation and a review of the literature. The patient was a 31-month-old girl who was injured in a car accident while asleep on a tilted front passenger seat. Radiographic examination showed dislocation of the right obturator foramen and transverse fracture of the ipsilateral femoral shaft. The dislocation of the right hip was easily reduced without anaesthesia during radiography. We applied Bryant traction after reduction for 4 weeks, followed by cast application for 3 weeks. Walking with support and full weightbearing were permitted 14 weeks and 16 weeks after the injury, respectively. Radiography at 4.5 years after the injury showed a mildly enlarged right femoral head and femur overgrowth of approximately 8 mm. Magnetic resonance imaging showed no evidence of suspected avascular necrosis of the femoral head. The patient has no subjective or objective symptoms, and is able to engage in all usual activities. The detailed mechanism of the injury is unknown. We assume that the lower leg was dislocated through abduction during flexion, or abducent, external flexion, considering that the child was sleeping at the time of the accident. Since she was hurled to the back seat, it was assumed that strong external force was vertically added to the femur, which caused the abducent force.

Yamamoto K

2004-06-01

 
 
 
 
81

Contoured iliac crest allograft interposition for pericapsular acetabuloplasty in developmental dislocation of the hip: technique and short-term results  

Science.gov (United States)

Background Pericapsular acetabuloplasty procedures have been widely used as an integral component of combined surgery to treat developmental hip dislocation after walking age. The stability of the acetabuloplasty and the maintenance of the acetabular correction will depend on the structural integrity of the iliac crest autograft, which, traditionally, has been inserted as the interposition material. Problems related to the use of an autograft have been encountered by various surgeons—including the authors—namely, graft displacement and resorption, which may necessitate internal fixation or result in revision surgery. To overcome autograft failure, the use of an allograft as the interposition material has been introduced by some surgeons. This study describes the radiologic results of 147 hips treated for developmental hip dislocation by means of a standard protocol of open hip reduction and pericapsular acetabuloplasty with a contoured iliac crest allograft as the interposition material. Methods This retrospective study reviewed the radiographs of 147 hips presenting with late developmental dislocation which were treated by open reduction and a concomitant pericapsular acetabuloplasty using a contoured iliac crest allograft as the interposition material. The minimum follow up period was 2 years. Measurement of the acetabular index (AI) was the main variable. The efficacy of the interposed iliac crest allograft as the main stabiliser of the acetabuloplasty was reflected by the maintenance of the corrected AI during the follow up period. Loss of acetabular correction, graft extrusion or resorption, the need for osteotomy internal fixation, delayed or non union, infection, hip redislocation and avascular necrosis (AVN) as possible complications were documented. Results The treatment protocol of a combined open reduction of the hip and pericapsular acetabuloplasty, inserting a contoured iliac crest allograft as the interposition material, resulted in concentrically reduced and stable hips in 96.6% of our cases. The redislocation rate was 3.4%. All of the allografts were completely incorporated at 6 months post-surgery with no graft-related infections. In only two hips was the acetabular correction not maintained. None of the osteotomies required internal fixation for stability, even in older children. Conclusion We believe that a contoured iliac crest allograft as the pericapsular acetabuloplasty interposition material renders excellent osteotomy stability that eliminates the need for internal fixation and—in the short-term—maintains the correction of the acetabulum achieved intra-operatively. PMID:21966307

Alhussainan, Thamer S.; Al Zayed, Zayed; Hamdi, Nezar; Bubshait, Dalal

2010-01-01

82

Reconstruction of the Acetabulum in Developmental Dysplasia of the Hip in total hip replacement.  

Science.gov (United States)

Developmental dysplasia of the hip (DDH) or congenital hip dysplasia (CDH) is the most prevalent developmental childhood hip disorder. It includes a wide spectrum of hip abnormalities ranging from dysplasia to subluxation and complete dislocation of the hip joint. The natural history of neglected DDH in adults is highly variable. The mean age of onset of symptoms is 34.5 years for dysplastic DDH, 32.5 years for low dislocation, 31.2 years for high dislocation with a false acetabulum, and 46.4 years for high dislocation without a false acetabulum. Thorough understanding of the bony and soft tissue deformities induced by dysplasia is crucial for the success of total hip arthroplasty. It is important to evaluate the existing acetabular deformity three-dimensionally, and customize the correction in accordance with the quantity and location of ace tabular deficiencies. Acetabular reconstruction in patients with DDH is challenging. Interpretation of published data is difficult and should be done with caution because most series include patients with different types of hip disease. In general, the complication rate associated with THA is higher in patients with hip dysplasia than it is in patients with osteoarthritis. Overall, clinical and functional outcomes following THA in patients hip dysplasia (DDH) differ from those treated for primary hip osteoarthritis, possibly due to the lower age and level of activity. Although function scores decline with age, the scores for pain and range of motion presented with a statistically significant improvement in the long-term. PMID:25386570

Sakellariou, Vasileios I; Christodoulou, Michael; Sasalos, Gregory; Babis, George C

2014-09-01

83

Congenital irreducible atlantoaxial dislocation associated with cervical intramedullary astrocytoma causing progressive spastic quadriparesis  

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Full Text Available Simultaneous presence of congenital irreducible atlantoaxial dislocation (AAD and cervical intramedullary astrocytoma has not been previously described and may cause disabling myelopathy. This 55-year-old lady presented with suboccipital pain, spastic quadriparesis, Lhermitte?s phenomenon and sphincteric disturbances. Lateral radiographs and magnetic resonance imaging showed irreducible AAD, occipitalized atlas, C2-3 fusion, and,an intramedullary tumor from C2-5 level iso-to-hypointense, non-enhancing, except in a small segment in the dorsal C2 level. A suboccipital craniectomy with C2-5 laminectomy revealed a greyish-white tenacious tumor. The tumor was decompressed using a C2-5 midline myelotomy and duroplasty. An occipitocervical lateral mass fixation was performed. Histopathology revealed a low-grade astrocytoma. At three-month follow-up, her spasticity had decreased and quadriparesis and sphincteric disturbances were persisting. Postoperative lateral radiographs and intrathecal contrast CT scan showed a stable occipitocervical construct. Thus, the suboccipital craniectomy and laminectomy with midline myelotomy and duroplasty facilitated space for progressively expanding intramedullary astrocytoma with irreducible AAD; the lateral mass fixation provided stability at the craniovertebral junction.

Chatley Anooj

2008-01-01

84

[Hip dislocation in children with cerebral palsy--the result of illness or treatment error].  

Science.gov (United States)

The authors inform about dangerous complications in the children with cerebral palsy-secondary dysplasia, subluxation or luxation of the hip. Among 326 children treated in the Orthopaedic Paediatric Department in Lublin in the years 1993-1996, 67 children had problems with hips. Paralytic hip luxation leads to the loss of walking abilities among many children. The operative reconstruction of the hip luxation is very difficult and does not allow the complete rebuilding of the joint. PMID:10023163

Tarczy?ska, M; Karski, T; Abobaker, S

1997-01-01

85

Body mass characteristics of hip osteoarthritis patients experiencing aseptic loosening, periprosthetic fractures, dislocation, and infections after total hip replacement  

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Ray MarksCity University of New York and Columbia University, New York, NY, USAAbstract: This work assessed the body mass characteristics of a cohort of community dwelling adults requiring surgery for complications related to primary hip arthroplasty, among other factors. The specific aim was to identify the extent to which high body mass prevailed in the cohort as a whole, to identify a role for subnormal body mass in the pathogenesis of post-operative complications following hip joint arthr...

Ray Marks

2009-01-01

86

Role of the limbus in femoral-head deformation in developmental dislocation of the hip: findings of two-directional hip arthrography.  

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Full Text Available Two-directional arthrographic findings made during conservative treatment of developmental dislocation of the hip were compared with the femoral-head configurations and radiological results obtained from long-term follow-up examinations in this retrospective study. Sixty hips were followed until at least age 14. Arthrography was carried out according to Terazawa's method. The shape of the superior, anterior, and posterior limbus was evaluated based on a modified Fujii's classification. The femoral-head configuration was classified into 4 groups, and the radiological results were evaluated using Severin's classification at the final observation. There was a statistically significant relationship between the shape of the anterior limbus, the number of portions of deformed limbus (superior, anterior, posterior, and the femoral-head configuration. Also, a statistically significant relationship between the shape of the limbus and Severin's classification was observed. These results suggest that the deformed limbus seems to play an important role in triggering femoral-head deformities, possibly via mechanical compression, and negatively affects development of the hip joint.

Hara S

2002-04-01

87

Traumatic unilateral avulsion of the anterior superior and inferior iliac spines with anterior dislocation of the hip: a case report.  

Science.gov (United States)

A sixteen-year-old boy involved in a high-speed motor vehicle accident sustained an anterior hip dislocation and avulsion of the anterior ilium extending from the anterior superior iliac spine to the anterior inferior iliac spine. The hip was emergently reduced, and further imaging was obtained to evaluate the bony injury. Computed tomography confirmed the presence of a large displaced bony fragment representing avulsion of the anterior superior and inferior iliac spines and a smaller fragment from the reflected head of the rectus femoris. The patient underwent open reduction and internal fixation of the ilium two days after the initial injury. Postoperatively, he was allowed to bear weight as tolerated with crutches but to avoid active hip flexion. He went on to an uneventful recovery, and at last report (approximately six months after injury), he had returned to full activity. An extensive review of the literature failed to show a similar injury of ipsilateral avulsion of the anterior superior and inferior iliac spines and reflected head of the rectus femoris. PMID:11232654

Meyer, N J; Schwab, J P; Orton, D

2001-02-01

88

Radiographic Prediction of the Results of Long-term Treatment with the Pavlik Harness for Developmental Dislocation of the Hip  

Directory of Open Access Journals (Sweden)

Full Text Available In 1957, Pavlik introduced the Pavlik harness as a useful treatment for developmental dislocation of the hip (DDH, and subsequent studies have documented favorable outcomes among patients treated with this device. However, there are only a few articles reporting how early radiographic measurements can be used to determine the prognosis after treatment with the Pavlik harness. In this study, 217 hips from 192 patients whose DDH treatment with the Pavlik harness was initiated before they were 6 months old and whose follow-up lasted at least 14 years (rate, 63.8% were analyzed using measurements from radiographs taken immediately before and after harness treatment, and at 1, 2, and 3 years of age. Severin's classification at the final follow-up was I or II in 71.9% and III or IV in 28.1% of the hips, respectively. Avascular necrosis of the femoral head (AVN was seen in 10% of the hips. Stepwise multiple regression analysis was performed to retrospectively determine whether any radiographic factors were related to the final classification as Severin I/II or III/IV. Receiver opera-ting characteristic (ROC curves were drawn for these factors, and a Wiberg OE angle (Point O was the middle point of the proximal metaphyseal border of the femur of 2 degrees on the 3-year radiographs was found to be the most useful screening value for judging the acetabular development of DDH cases after treatment with a Pavlik harness, with a sensitivity of 71% a specificity of 93%, and a likelihood ratio of 10.1.

Tetsunaga,Tomonori

2009-06-01

89

Can Dual Mobility Cups prevent Dislocation in All Situations After Revision Total Hip Arthroplasty?  

Science.gov (United States)

The outcome of a single design of dual mobility cup was prospectively evaluated in a continuous series of 994 revision THAs with respect to dislocation and intra-prosthetic dislocation (IPD). At a 7.3-year mean follow-up, the dislocation rate was 1.5% and the IPD rate was 0.2%. The 2 IPD occurred in acetabular-only revisions and were related to a poor head-to-neck ratio with early impingement and wear at the polyethylene mobile component chamfer. Dual mobility cups demonstrated a low dislocation rate in revision THA but did not compensate for potential perioperative technical errors. In addition, IPD did not appear to be a concern with respect to the benefit in term of instability prevention though caution is advised in acetabular-only revision associated with a poor head-to-neck ratio. Level of Evidence: Therapeutic study-Level IV. PMID:25443363

Wegrzyn, Julien; Tebaa, Eloïse; Jacquel, Alexandre; Carret, Jean-Paul; Béjui-Hugues, Jacques; Pibarot, Vincent

2014-11-10

90

Implementing Capsule Representation in a Total Hip Dislocation Finite Element Model  

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Previously validated hardware-only finite element models of THA dislocation have clarified how various component design and surgical placement variables contribute to resisting the propensity for implant dislocation. This body of work has now been enhanced with the incorporation of experimentally based capsule representation, and with anatomic bone structures. The current form of this finite element model provides for large deformation multi-body contact (including capsule wrap-around on bone...

Stewart, Kristofer J.; Pedersen, Douglas R.; Callaghan, John J.; Brown, Thomas D.

2004-01-01

91

Hip Replacement - Physical Therapy  

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Full Text Available ... been used for months or years due to pain. The risk of dislocating a new hip joint ... normal hip. However, there might be lots of pain and stiffness in the hip at first. Your ...

92

Some effects of position on the roentgenographic diagnosis of dislocation at the infant hip  

International Nuclear Information System (INIS)

X-ray findings in the examination of the hips in infants depend upon the position of the infant during the examination. Each of three variables of position, (1) pelvic tilt, (2) abduction of the femurs, and (3) external rotation of the femurs, affects the apparent relation but not the real relation between the acetabulum and the femur. (orig.)

93

Histomorphologic Characteristics of Newly Formed Cavity of a Hip Joint in Dislocation in Experiment  

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Full Text Available The aim of the investigation was to study in experiment the head of femur dislocation, which is a variety of transchondral damages, and the process of chondro- and osteogenesis in articular surface formation to create optimal conditions for their reparation and new formation.Materials and Methods. The experiment was carried out on 20 reproductive chinchilla rabbits. The head of femur was dislocated in experiment after joint capsule transaction, and exposed to dosing impact and force effect in the area of its upper pole. A blow was stricken by the device looking like an impact machine. The blow energy was regulated by changing load weight and the pendulum height. The animals were removed from the experiment 3, 7, 14, 30 days and 3 months after the injury.Results. For the initial few days in the dislocation area there were found fibrin effusions, hemorrhage, periosteal edema, and granulation tissue. In 2 weeks in fibrous tissue there were determined focal clusters of chondroblasts. By the end of the first month, near the head of femur, connective tissue was underlaid by newly formed fibrous cartilage with the areas of young hyaline cartilage forming a free margin. In 3 months a submarginal zone was formed of hyaline cartilage with ordered cytoarchitectonics of chondrocytes. Different-sized margins of the newly formed hyaline cartilage with the foci of complete osteogenesis in the wall of forming cavity (in the form of osseous tissue of sponge structure with the blood-forming bone marrow in interjoist were observed in close connection with periosteum of acetabular roof.Conclusion. A joint cavity forms on the basis of the mechanisms of pluripotent development of cambial cell elements towards chondro- and osteogenesis. Its successful formation can be accompanied by the mass of well blood-supplied muscles surrounding the dislocated head, periosteum of acetabular roof, as well as the capability of active movements the head of femur dislocated into supra-acetabular area in the absence of axial bearing on the operated extremity during the whole postoperative period. Thus, an articular cartlage has significant potential for recovery, and the obtained results enable to help lay down optimal conditions for such a recovery.

I.Y. Ezhov

2013-06-01

94

Seasonality of congenital anomalies in Europe  

DEFF Research Database (Denmark)

BACKGROUND: This study describes seasonality of congenital anomalies in Europe to provide a baseline against which to assess the impact of specific time varying exposures such as the H1N1 pandemic influenza, and to provide a comprehensive and recent picture of seasonality and its possible relation to etiologic factors. METHODS: Data on births conceived in 2000 to 2008 were extracted from 20 European Surveillance for Congenital Anomalies population-based congenital anomaly registries in 14 European countries. We performed Poisson regression analysis encompassing sine and cosine terms to investigate seasonality of 65,764 nonchromosomal and 12,682 chromosomal congenital anomalies covering 3.3 million births. Analysis was performed by estimated month of conception. Analyses were performed for 86 congenital anomaly subgroups, including a combined subgroup of congenital anomalies previously associated with influenza. RESULTS: We detected statistically significant seasonality in prevalence of anomalies previously associated with influenza, but the conception peak was in June (2.4% excess). We also detected seasonality in congenital cataract (April conceptions, 27%), hip dislocation and/or dysplasia (April, 12%), congenital hydronephrosis (July, 12%), urinary defects (July, 5%), and situs inversus (December, 36%), but not for nonchromosomal anomalies combined, chromosomal anomalies combined, or other anomalies analyzed. CONCLUSION: We have confirmed previously described seasonality for congenital cataract and hip dislocation and/or dysplasia, and found seasonality for congenital hydronephrosis and situs inversus which have not previously been studied. We did not find evidence of seasonality for several anomalies which had previously been found to be seasonal. Influenza does not appear to be an important factor in the seasonality of congenital anomalies.

Luteijn, Johannes Michiel; Dolk, Helen

2014-01-01

95

A retrospective study of prosthetic capsule technique for the treatment of problem cases of dislocated hips  

International Nuclear Information System (INIS)

This article describes a technique for stabilizing coxofemoral luxations in dogs that uses placement of nonabsorbable sutures from two screws in the dorsal acetabular rim to a screw in the trochanteric fossa of the femur to create a prosthetic capsule. Twenty-one hips with luxations that were either recurrent or greater than 7 days duration were treated. Owners of 17 dogs were contacted from 4 to 40 months after surgery. Eight dogs were reported as having excellent function, three had good function, three had fair function, and three had poor function. No complications directly related to the technique were reported

96

Open repair and arthroscopic follow-up of severely delaminated femoral head cartilage associated with traumatic obturator fracture-dislocation of the hip.  

Science.gov (United States)

This article describes an unusual case of a young adult with traumatic obturator fracture-dislocation of the hip, involving a large femoral head fragment and severe delamination of articular cartilage. The dislocation was irreducible by closed reduction because of interposing soft tissues, including the rectus femoris and iliopsoas muscles, and torn joint capsules, and therefore, open reduction was performed using an anterolateral approach in the lateral decubitus position. The large femoral head fragment was released from the ligamentum teres and fixed to the dislocated femoral head with headless screws. The severely delaminated femoral head cartilage was repaired with suture anchors and absorbable sutures. The patient was kept nonweight bearing for 6 weeks postoperatively, and was then allowed to resume full weight bearing gradually. He returned to normal activities of daily living at 14 weeks. At 9 months postoperatively, arthroscopic examination showed complete healing of the fracture and cartilage lesions, and at 12-month follow-up, there was no clinical or radiographic evidence of arthritis or osteonecrosis. The patient had no pain or limp, and achieved an excellent result according to Epstein's clinical evaluation criteria. To our knowledge, no previous report exists on the arthroscopic follow-up of a repaired femoral head cartilage in patients with obturator fracture-dislocation of the hip along with a large femoral head fragment and severe delamination of articular cartilage. PMID:21667908

Lim, Byung-Ho; Jang, Sung-Won; Park, Youn-Soo; Lim, Seung-Jae

2011-06-01

97

Congenital Dislocation of Knee: Results of the Treatment in 29 Cases Between 1970 and 2010 Years at Shafa Yahyaian Hospital in Tehran  

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Full Text Available Background: There are not many reports regarding the treatment approaches of congenital dislocation of the knee in the literature. Therefore, the preferred method of treatment of this rare congenital disease is still controversial. Hereby, we report the treatment outcome of 29 patients admitted in Shafa Yahyaian Hospital during 40 years. Methods: In this retrospective study done in Shafa Yahyaian Hospital in Tehran, Iran during 2010, we retrospectively reviewed the medical records of 29 patients treated conservatively or surgically for congenital dislocation of the knee. Patients had been evaluated for an average follow-up of 8.5 years. Results: Overall, 54 knee dislocations had been treated surgically (58% or conservatively (42%. Range of knee motion, persistent recurvatum, instability, valgus deformity after treatment and limping were the more important factors reported in the two surgically or conservatively treated groups. Knee function was satisfactory in patients with conservative treatment. Despite 80% of instability in the operated knees, patients could ambulate with or without braces and had a range of motion equal to 80 degrees. Knee function was also good after quadricepsplasty with transarticular pins in selected cases. Conclusion: We recommend a conservative approach to the disease, regardless of the patients age at the time of treatment and subsequent surgery in patients with dissatisfactory recovery. Quadricepsplasty with transarticular fixation is recommended as a good option in treating these patients. Posterior capsulorrhaphy for patients with CDK and ligamentous laxity is also recommended.

M Jabalameli

2012-08-01

98

Hip Replacement - Physical Therapy  

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Full Text Available ... function a lot like a ball and socket device. Artificial hips allow a very wide range of ... due to pain. The risk of dislocating a new hip joint is the highest during the first ...

99

A influência da via de acesso na luxação das artroplastias totais do quadril / The influence of the surgical approach concerning dislocation in total hip arthroplasty  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese OBJETIVO: Avaliar a ocorrência de luxação nas artroplastias totais do quadril não cimentadas, comparando-se os acessos posterior e lateral direto. Métodos: Estudo retrospectivo comparativo com 232 pacientes submetidos à artroplastia total do quadril não cimentada, por diagnóstico de osteoartrose pri [...] mária e secundária, sendo 105 submetidos ao acesso posterior e 127 ao acesso lateral. O modelo protético utilizado foi único, assim como o protocolo de reabilitação e cuidados pós-operatórios. Foram verificados ocorrência de luxação, posicionamento acetabular e componentes utilizados. RESULTADOS: Ocorreu um caso isolado de luxação no grupo do acesso lateral direto (0,8%) contra 0% no grupo de pacientes submetidos ao acesso posterior, sem diferença significativa (p = 1). A luxação ocorreu em uma paciente de 47 anos de idade, que foi tratada com redução incruenta sem recidiva da luxação após três anos e um mês de seguimento. O tempo de seguimento dos dois grupos variou entre seis e 42 meses, com média de 23,7 meses. CONCLUSÃO: Os autores concluem que a prevalência de luxação nas artroplastias totais do quadril é similar nos dois acessos estudados e que medidas educativas, técnica cirúrgica adequada e utilização de próteses com offsets maiores podem diminuir o risco dessa complicação. Abstract in english OBJECTIVES: Our primary aim was to evaluate the occurrence of dislocation of non-cemented total hip arthroplasty, when using the posterior and the direct lateral approaches. METHODS: We performed a comparative retrospective study with 232 patients submitted to non-cemented total hip arthroplasty, du [...] e to the diagnosis of primary or secondary osteoarthritis. The posterior approach was used in 105 patients while direct lateral approach was used in 127 patients. There was only one prosthesis model and the same rehabilitation program and post-operative care was used for all patients. We checked the occurrence of dislocation, the acetabular positioning and also the size of the components. RESULTS: There was only one case of dislocation, treated with closed reduction successfully. This was a 47 year-old female, submitted to direct lateral approach. The mean follow-up time for both groups was 23.7 months, ranging from six to 42 months. Conclusion: The authors conclude that the prevalence of total hip arthroplasty dislocation is similar for both approaches, and educational measures besides the use of a higher femoral offset seem to reduce the risk of this complication.

José Ricardo Negreiros, Vicente; André Fernandes, Pires; Bruno Takasaki, Lee; Marcos Camargo, Leonhardt; Leandro, Ejnisman; Alberto Tesconi, Croci.

100

Luxação traumática posterior do quadril em crianças: relato de cinco casos Traumatic posterior dislocation of the hip in children: report of five cases  

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Full Text Available OBJETIVO: Avaliar uma série de casos de luxação traumática posterior em crianças, o tratamento e os resultados, e revisar os aspectos relacionados à sua epidemiologia, diagnóstico clínico e radiográfico, tratamento, complicações e prognóstico. MÉTODOS: Foram avaliados retrospectivamente cinco pacientes com luxação traumática do quadril com média idade de 4,6 ± 0,9 anos e tempo de seguimento de 19,8 ± 7,0 meses. Foram avaliados o tempo entre a luxação e a redução, o tipo de tratamento, as lesões associadas e as complicações tardias. RESULTADOS: O tratamento inicial foi a redução incruenta com tempo médio de 5,2 ± 3,6 horas após o trauma inicial, sendo que todos foram submetidos à redução sob anestesia. O tratamento complementar incluiu imobilização gessada e tração. Não foi observada necessidade de cirurgias adicionais ou sequelas a longo prazo. CONCLUSÃO: A luxação traumática do quadril deve ser tratada com redução incruenta rápida, controle adequado da redução e observação rigorosa para diagnóstico e tratamento de complicações tardias.OBJECTIVE: To evaluate a series of cases of traumatic posterior dislocations in children, the treatment and the results, and to revise aspects such as the epidemiology, clinical and radiographic diagnosis, treatment, complications and prognosis. METHODS: Five patients with traumatic hip dislocation, with an average age of 4.6 ± 0.9 years, and an ongoing follow-up period of 19.8 ± 7.0 months, were evaluated retrospectively. The time between dislocation and reduction, the type of treatment, associated injuries, and subsequent complications were also evaluated. RESULTS: The initial treatment was closed reduction, in an average time of 5.2 ± 3.6 hours after the initial trauma, in which the patients were subjected to the reduction under anesthesia. Complementary treatment included immobilization with casts and traction. No needs for additional surgeries or long-term side effects were observed. CONCLUSION: Traumatic dislocation of the hip should be treated by quick closed reduction, with appropriate control of the reduction and careful observation of the patient for diagnosis and treatment of subsequent complications.

Gilberto Francisco Brandão

2010-01-01

 
 
 
 
101

Atlantoaxial dislocation.  

Science.gov (United States)

Atlanto-axial dislocations (AADs) may be classified into four varieties depending upon the direction and plane of the dislocation i.e. anteroposterior, rotatory, central, and mixed dislocations. However, from the surgical point of view these are divided into two categories i.e. reducible (RAADs) and irreducible (IAADs). Posterior fusion is the treatment of choice for RAAD. Transarticular screw fixation with sub-laminar wiring is the most stable& method of posterior fusion. Often, IAAD is due to inadequate extension in dynamic X-ray study which may also be due to spasm of muscles. If the anatomy at the occipito-atlanto-axial region {O-C1-C2; O: occiput, C1: atlas, C2: axis} is normal on X-ray, the dislocation should be reducible. In case congenital anomalies at O-C1-C2 and IAAD are seen on flexion/extension studies of the cervical spine, the C1-C2 joints should be seen in computerized tomography scan (CT). If the C1-C2 joint facet surfaces are normal, the AAD should be reducible by cervical traction or during surgery by mobilizing the joints. The entity termed "dolichoodontoid" does not exist. It is invariably C2-C3 (C3- third cervical vertebra) fusion which gives an appearance of dolichoodontoid on plain X-ray or on mid-saggital section of magnetic resonance imaging (MRI) or CT scan. The central dislocation and axial invagination should not be confused with basilar invagination. Transoral odontoidectomy alone is never sufficient in cases of congenital IAAD, adequate generous three-dimensional decompression while protecting the underlying neural structures should be achieved. Chronic post-traumatic IAAD are usually Type II odontoid fractures which get malunited or nonunited with pseudoarthrosis in dislocated position. All these dislocations can be reduced by transoral removal of the offending bone, callous and fibrous tissue. PMID:22406773

Jain, Vijendra K

2012-01-01

102

Congenital dislocation of the deep digital flexor tendon associated with hypoplasia of the sustentaculum tali in a Thoroughbred colt  

International Nuclear Information System (INIS)

An 11-month-old Thoroughbred colt was presented with a hard swelling at the proximal third of the right 4th metatarsal bone. A medial dislocation of the deep digital flexor tendon (flexor digitorum profundus) was also observed on the same leg. On the plantaroproximal-plantarodistal projection of the calcaneus, there was flattening and shortening of the sustentaculum tali. The smooth bony proliferation at the proximal third of the right 4th metatarus was compatible with a chronic splint bone fracture. This report describes a medial deep digital flexor dislocation associated with hypoplasia of the sustentaculum tali

103

Anterior hip capsuloligamentous reconstruction for recurrent instability after hip arthroscopy.  

Science.gov (United States)

A variety of complications, including iatrogenic anterior hip instability, have been reported after hip arthroscopy. We present a case of a patient sustaining a postoperative anterior hip dislocation after cam resection for treatment of femoroacetabular impingement. Our patient developed persistent instability and required anterior capsuloligamentous reconstruction with iliotibial autograft. We present a comprehensive review of the literature on postoperative hip instability after hip arthroscopy, including the role of capsulotomy closure, and use of postoperative orthotics and weight-bearing restrictions. PMID:25490020

Dierckman, Brian D; Guanche, Carlos A

2014-12-01

104

Annotations on cost-effectiveness and risk associated with infants' hip radiological screening in the Netherlands  

International Nuclear Information System (INIS)

In the Netherlands there is a never made a good cost-benefit analysis of the radiological screening of the infants' hip abnormalities, (= congenital dislocation of the hip). The time between the invitation to join the Technical Workshop on Practices and Regulations in Field of Radiological Mass Screening within the Member States of the European Community and the planned meeting was too short to collect all the data necessary for such an analysis. In this paper we will present as much data as possible so that we can participate in the discussion about the workshop's subject. In the forthcoming months we will continue to collect data for a real cost-effectiveness analysis

105

Roentgenography of hip-joint using tubus in infants  

International Nuclear Information System (INIS)

Roentgenography of hip-joint using tubus was discussed. This technique has been made at St. Marianna University, School of Medicine, in order to reduce the exposure dose in x-ray examination of congenital dislocation of hip-joint. The tubus is designed to butterfly-shaped. Only the site which is necessary for roentgenography of hip-joint is exposed, and the sexual gland is outside exposure. The exposure dose of the sexual gland using tubus is 1/10 in female infants and 1/30 in male infants of those without tubus (6.7 mR in male infants, 2.0 mR in female infants). There are some advantages in the tubus: it is clinically used for both sexes as well as reducing exposure doses, and it can be used widely from neonates to infants. (Serizawa, K.)

106

Hip Replacement - Physical Therapy  

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Full Text Available ... the first couple weeks after surgery. Using a high-rise toilet seat also helps prevent dislocation. Over ... bends the hip more than 90 degrees. A high-rise toilet seat is recommended until you get ...

107

Hip Replacement - Physical Therapy  

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Full Text Available ... Over time, as the muscles get stronger, preventive measures like these will not be as important. Physical ... doctor, nurses and physical therapist. To avoid the risk of dislocating your new hip, you should not: • ...

108

Congenital Anomalies in Infant with Congenital Hypothyroidism  

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Full Text Available bjective: Congenital hypothyroidism is characterized by inadequate thyroid hormone production in newborn infants. Many infants with CH have co-occurring congenital malformations. This is an investigation on the frequency and types of congenital anomalies in infants with congenital hypothyroidism born from May 2006-2010 in Hamadan, west province of Iran.Methods: The Iranian neonatal screening program for congenital hypothyroidism was initiated in May 2005. This prospective descriptive study was conducted in infants diagnosed with congenital hypothyroidism being followed up in Pediatric Endocrinology Clinicof Besat Hospital, a tertiary care centre in Hamadan. Cases included all infants with congenital hypothyroidism diagnosed through newborn screening program or detected clinically. Anomalies were identified by clinical examination, echocardiography, and X-ray of the hip during the infant’s first year of life.Results: A total of 150 infants with biochemically confirmed primary congenital hypothyroidism (72 females and 78 males were recruited during the period between May 2006-2010. Overall, 30 (20% infants had associated congenital anomalies. The most common type of anomaly was Down syndrome. Seven infants (3.1% had congenital cardiac anomalies such as: ASD (n=3, VSD (n=2, PS (n =1, PDA (n=1. Three children (2.6% had developmental displasia of the hip (n=3.Conclusion: The overall frequency of Down syndrome, cardiac malformation and other birth defect was high in infants with CH. This reinforces the need to examine all infants with congenital hypothyroidism for the presence of associated congenital anomalies.

Zahra Razavi

2012-09-01

109

Luxação anterior exposta do quadril em um adulto: relato de caso e revisão da literatura / Open anterior dislocation of the hip in an adult: a case report and review of literature  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese A luxação anterior exposta do quadril é condição rara e resulta de trauma de alta energia. Até o momento, foram descritos na literatura 10 casos. Sua raridade deve-se à estabilidade inerente da articulação e à posição profunda na pelve, com fortes ligamentos e musculatura volumosa ao seu redor. Infl [...] uenciam o prognóstico dessa lesão diversos fatores, tais como grau de contaminação, lesões de partes moles, idade do paciente e, principalmente, atraso na redução. As principais complicações são: artrose do quadril, com incidência que pode chegar a 50% dos casos, quando associada a fraturas da cabeça femoral; e osteonecrose da cabeça do fêmur, com incidência entre 1,7% e 40% (nos casos de luxação anterior fechada). Por causa da raridade e da potencial incapacidade funcional decorrente dessa lesão, relatamos o caso de um homem de 46 anos vítima de acidente automobilístico. Foi feita redução do quadril (luxação do tipo anterior alta) nas primeiras três horas pós-trauma. O paciente foi mantido sem carga até a sexta semana, com carga total após a 10ª semana. Após um ano de seguimento, observou-se resultado funcional pobre (Harris Hip Score: 52), provavelmente por causa de lesão labral associada, porém sem sinais na ressonância nuclear magnética de osteonecrose da cabeça femoral. Abstract in english Open anterior hip dislocation is a rare condition and results from high-energy trauma. Ten cases of open anterior dislocation have been described in the literature so far. Its rarity is due to the inherent stability of the joint, its deep position in the pelvis, with strong ligaments and bulky muscl [...] es around the articulation. Several factors influence the prognosis, such as the degree of compounding, the associated soft tissue injuries, the age of the patient and, mainly, the delay in reduction. The main complications are: arthrosis of the hip, with incidence of 50% of cases, when associated with fractures of the femoral head; and osteonecrosis of the femoral head, with incidence between 1.7 and 40% (in closed anterior dislocation). Because of the rarity and the potential disability of this lesion, we report a case in a 46-year-old man, involved in an automobile accident. The hip was reduced (anterior superior dislocation)in the first three hours of the trauma. The patient was kept non-weight bearing until sixth week, with complete weight bearing after 10th week. After one year follow-up, the functional result was poor (Harris Hip Score: 52), probably because of the associated labral tear, but without signs of osteonecrosis of the femoral head in magnetic resonance imaging.

Anderson Luiz de, Oliveira; Eduardo Gomes, Machado.

2014-01-01

110

Developmental anterior dislocation of the radial head resulting from a congenital solitary osteochondroma of the proximal ulna in an infant.  

Science.gov (United States)

A 4-month-old female infant was brought to our office by her parents, who had noticed a lump on the child's right elbow. Examination revealed a hard, painless lump in the antero-external region that was not reducible in flexion-extension or in pronation-supination. Neither palpation nor passive motion produced pain. Preoperative radiographs revealed a bony mass in the anteroexternal region of the proximal ulnar metaphysic (solitary osteochondroma), which was displacing the radial head into anteroexternal dislocation. No physiological bowing of the proximal metaphysis of the ulna was present. The infant underwent surgery at 6 months of age. No remains of the annular ligament were found. A complete resection of the tumour mass was performed, after which it was possible to reduce the radial head, together with the humeral condyle. Trans-radiocapitellar fixation was applied, with immobilization for 6 weeks. Subsequent radiological study revealed a congruent reduction of the radial head, with a progressive periosteal reaction of the posterior cortex of the ulna that evolved towards remodeling of the physiological bowing. Eight years after the surgery, the child remains asymptomatic, with complete range of motion and symmetric carrying angles. There were no relapses of osteochondroma, the deformity, or radioulnar synostosis. PMID:20345362

García-Mata, Serafín; Hidalgo-Ovejero, Angel M

2010-01-01

111

[Hip arthroscopy].  

Science.gov (United States)

In the last ten years, hip arthroscopy has been developing intensively and it is rapidly gaining primacy in the treatment of various injuries and damages to the hip itself and its immediate vicinity. The basic advantage of hip arthroscopy surgery versus classic open surgery is avoiding an open dislocation of the hip and, thus, reducing patient's morbidity and accelerating his/her rehabilitation, which leads to a quicker return to everyday activities. The success of arthroscopic surgery depends on the correct indication for the surgery and on the experience and the skill of the operator. It also depends on the properly conducted rehabilitation and the patient's compliance, as well as on the patient's realistic expectations. Indications for hip arthroscopy today are the following: injury and damage to acetabular labrum and/or articular cartilage, femoroacetabular impingement syndrome, injuries and damages to the ligament of the femoral head, loose and foreign joint bodies as well as different conditions of synovial membrane (synovial chondromatosis, pigmented villonodular synovitis and other inflammatory arthropathy such as rheumatoid arthritis). In this article we describe the indications, technique, complications and the prospect of hip arthroscopy, with a detailed overview of contemporary literature data. PMID:24364201

Smoljanovi?, Tomislav; Prutki, Maja; Strazar, Klemen; Curi?, Stjepan; Mahnik, Alan; Bojani?, Ivan

2013-01-01

112

Tratamento cirúrgico de displasia de desenvolvimento do quadril de apresentação tardia depois da idade da marcha / Surgical treatment of late-presenting developmental dislocation of the hip after walking age  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese OBJETIVO: Os casos de displasia de desenvolvimento do quadril (DDQ) ainda ocorrem depois da idade da marcha devido ao diagnóstico tardio ou ausente e à falha do tratamento conservador. A escolha do tratamento da DDQ depois da idade da marcha continua controversa e uma das opções é a redução a céu ab [...] erto combinada com osteotomia do inominado. MÉTODOS: Vinte pacientes com 26 quadris com DDQ tratados cirurgicamente foram avaliados de 2005 a 2008, usando-se a osteotomia do inominado pela técnica de Salter depois de redução e capsulorrafia a céu aberto. A idade dos pacientes no momento da cirurgia variou de 12 a 18 meses (média de idade 14,7 meses). De 15 pacientes do sexo feminino e cinco do masculino, seis tiveram luxação bilateral e dos restantes, nove tiveram luxação do quadril esquerdo e cinco, do direito. RESULTADOS: Os resultados foram avaliados de acordo com os critérios modificados de McKay e dos critérios radiológico de Severin, depois de acompanhamento médio de 46,7 meses. Oitenta e nove por cento dos quadris foram classificados como excelentes ou bons pelos critérios de McKay. Não houve resultados ruins. De acordo com os critérios de Severin, 77% eram do tipo I e II, enquanto 23% eram do tipo III e IV; nenhum quadril foi classificado nos tipos V ou VI. Houve um caso (3,8%) de reluxação, mas a cirurgia de revisão resultou em redução estável, concêntrica e permanente. Não há relato de casos de infecções, fratura do enxerto e lesão vacular ou nervosa. CONCLUSÃO: A redução a céu aberto combinada com a osteotomia de Salter não afeta o quadril com relação à remodelação em crianças entre 12 e 18 meses de idade. Nível de Evidência IV, Série de Casos. Abstract in english OBJECTIVE: Cases of developmental dysplasia of the hip (DDH) still occur after walking age because of late or missed diagnosis and failed conservative treatment. The choice of treatment for DDH after walking age continues to be controversial and one of the options is open reduction combined with inn [...] ominate osteotomy. METHODS: Twenty patients with 26 surgically treated hips with DDH, were evaluated from 2005 to 2008, using innominate osteotomy by Salter's technique after open reduction and capsulorraphy. The age of patients at time of surgery ranged from 12 to 18 months (mean age 14.7 months). Fifteen were females and five males, six patients had bilateral dislocation and among the remaining, nine had their left hip dislocated and five had their right hip dislocated. RESULTS: The results were evaluated according to the modified McKay criteria and the Severin radiological criteria, after a mean follow-up of 46.7 months. Eighty nine percent of the hips were rated as excellent or good by McKay criteria. There were no poor results. According to Severin criteria 77% were type I and II while 23% showed type III and IV; no hip was rated as Severin's group V or VI. There was one case (3.8%) of re-dislocation but revision surgery resulted in stable, concentric, and permanent reduction. No cases of infection, graft fracture and vascular or nervous injury were reported. CONCLUSION: Open reduction combined with Salter osteotomy does not jeopardize the hip with regard to acetabular remodeling in children between 12 and 18 months of age. Level of Evidence IV, Case Series.

Enan, Ahmed; Abo-hegy, Mohamed; Hammad, Wael.

113

Neonatal foot deformities and their relationship to developmental dysplasia of the hip: an 11-year prospective, longitudinal observational study.  

Science.gov (United States)

In a prospective study over 11 years we assessed the relationship between neonatal deformities of the foot and the presence of ultrasonographic developmental dysplasia of the hip (DDH). Between 1 January 1996 and 31 December 2006, 614 infants with deformities of the foot were referred for clinical and ultrasonographic evaluation. There were 436 cases of postural talipes equinovarus deformity (TEV), 60 of fixed congenital talipes equinovarus (CTEV), 93 of congenital talipes calcaneovalgus (CTCV) and 25 of metatarsus adductus. The overall risk of ultrasonographic dysplasia or instability was 1:27 in postural TEV, 1:8.6 in CTEV, 1:5.2 in CTCV and 1:25 in metatarsus adductus. The risk of type-IV instability of the hip or irreducible dislocation was 1:436 (0.2%) in postural TEV, 1:15.4 (6.5%) in CTCV and 1:25 (4%) in metatarsus adductus. There were no cases of hip instability (type IV) or of irreducible dislocation in the CTEV group. Routine screening for DDH in cases of postural TEV and CTEV is no longer advocated. The former is poorly defined, leading to the over-diagnosis of a possibly spurious condition. Ultrasonographic imaging and surveillance of hips in infants with CTCV and possibly those with metatarsus adductus should continue. PMID:19407302

Paton, R W; Choudry, Q

2009-05-01

114

Arthroscopic management of an intraarticular osteochondroma of the hip  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The role of hip arthroscopy in the management of femoroacetabular impingement (FAI) has been advancing rapidly. In this case report, we describe the use of hip arthroscopy to successfully treat a femoral neck osteochondroma that caused a symptomatic labral tear in a 37 year old woman. Hip arthroscopy offers several advantages to surgical dislocation of the hip in the management of intra articular pathology and FAI. Hip arthroscopy is minimally invasive without the significant trauma to hip mu...

Kelley, Bryan T.; Feeley, Brian T.

2009-01-01

115

Bipolar hip arthroplasty.  

Science.gov (United States)

Our aim was to compare hip arthroplasty with internal screw fixation in the repair of intertrochanteric fractures in elderly patients with osteoporosis. Of 112 included patient, 70 (81.81 ± 4.88 years) received hip arthroplasty with a prosthesis specially designed for intertrochanteric fractures, and 42 (83.46 ± 5.11 years) underwent plate-screw fixation. The hip arthroplasty group had significantly longer operation time, intraoperative blood loss, and total volume of blood transfused but had shorter time to beginning weight-bearing (5.94 ± 2.76 vs 23.68 ± 22.01 days) and higher postoperative Harris hip score (91.37 ± 4.80 vs 86.14 ± 5.46). In the arthroplasty group, there were 2 dislocations; and in the plate-screw fixation group, there were 5 internal fixation failures. Hip arthroplasty is preferable to internal fixation in elderly patients (age >80 years) with osteoporosis. PMID:21530148

Chang, Qing; Liu, Shubing; Guan, Changyong; Yu, Fangyuan; Wu, Shenguang; Jiang, Changliang

2011-12-01

116

Pathologic ligamentous constraint of the hip.  

Science.gov (United States)

A mathematic model of the hip capsule and lower extremity musculature was utilized to predict the forces present in the hip ligaments during locomotion. The results demonstrate principles and trends (rather than absolute results) in hip mechanics, the details of which are affected by the associated modeling assumptions. The active stretching of a hip joint capsule tightened by scarring or surgical transfer may appreciably increase the hip contact force. Capsular elements that prevent hip flexion and adduction play a major role in hip contact force exaggeration during common activities. The positive effect of maintaining the hip capsule to reduce total hip component dislocation contrasts with the potential negative effects of restricting joint motion and increasing the joint contact force. Increased joint loading due to capsular restriction may contribute to prosthetic component loosening. PMID:6641064

Crowninshield, R D; Johnston, R C; Brand, R A; Pedersen, D R

1983-12-01

117

The association between clubfoot and developmental dysplasia of the hip.  

Science.gov (United States)

The association between idiopathic congenital talipes equinovarus (CTEV) and developmental dysplasia of the hip is uncertain. We present an observational cohort study spanning 6.5 years of selective ultrasound screening of hips in clubfoot. From 119 babies with CTEV there were nine cases of hip dysplasia, in seven individuals. This suggests that 1 in 17 babies with CTEV will have underlying hip dysplasia. This study supports selective ultrasound screening of hips in infants with CTEV. PMID:21037357

Perry, D C; Tawfiq, S M; Roche, A; Shariff, R; Garg, N K; James, L A; Sampath, J; Bruce, C E

2010-11-01

118

Anesthesia for a patient with Fanconi anemia for developmental dislocation of the hip: a case report / Anestesia en paciente con anemia de Fanconi y displasia del desarrollo de la cadera: caso clínico / Anestesia em paciente com anemia de Fanconi e displasia do desenvolvimento do quadril: relato de caso  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese A anemia de Fanconi é uma síndrome hereditária autossômica recessiva rara, caracterizada por deficiência da medula óssea e anomalias congênitas e hematológicas. A literatura sobre o manejo anestésico dos pacientes é limitada. O manejo de uma displasia do desenvolvimento do quadril foi descrito em um [...] paciente com anemia de Fanconi. Por causa da natureza heterogênea, um paciente com anemia de Fanconi deve ser submetido à avaliação pré-operatória para diagnosticar as características clínicas. Em conclusão, o bloqueio caudal foi a nossa escolha para esse paciente com anemia de Fanconi, sem trombocitopenia, para evitar o N2O, reduzir a quantidade de anestésico, a microcefalia existente, o hipotireoidismo e o aumento das enzimas hepáticas, proporcionar analgesia pós-operatória e reduzir a quantidade de analgésico usada no pós-operatório. Abstract in spanish La anemia de Fanconi es un síndrome hereditario autosómico recesivo raro, caracterizado por deficiencia de la médula ósea y por anomalías congénitas y hematológicas. La literatura sobre el manejo anestésico de esos pacientes es limitada. El manejo de una displasia del desarrollo de la cadera fue des [...] crito en un paciente con anemia de Fanconi. Debido a la naturaleza heterogénea, un paciente con anemia de Fanconi debe ser sometido a la evaluación preoperatoria para diagnosticar las características clínicas. En conclusión, el bloqueo caudal fue nuestra elección para ese paciente con anemia de Fanconi sin trombocitopenia para evitar el N2O, reducir la cantidad de anestésico, microcefalia existente, hipotiroidismo y aumento de las enzimas hepáticas, proporcionar analgesia postoperatoria y reducir la cantidad de analgésico usado en el postoperatorio. Abstract in english Fanconi anemia is a rare autosomal recessive inherited bone marrow failure syndrome with congenital and hematological abnormalities. Literature regarding the anesthetic management in these patients is limited. A management of a developmental dislocation of the hip was described in a patient with fan [...] coni anemia. Because of the heterogeneous nature, a patient with fanconi anemia should be established thorough preoperative evaluation in order to diagnose on clinical features. In conclusion, we preferred caudal anesthesia in this patient with fanconi anemia without thrombocytopenia, because of avoiding from N2O, reducing amount of anesthetic, existing microcephaly, hypothyroidism and elevated liver enzymes, providing postoperative analgesia, and reducing amount of analgesic used postoperatively.

Zafer, Dogan; Huseyin, Yildiz; Ismail, Coskuner; Murat, Uzel; Mesut, Garipardic.

2014-06-01

119

Subtalar dislocation  

Energy Technology Data Exchange (ETDEWEB)

Over a period of three years we have seen nine patients with subtalar dislocation, all of whom sustained violent trauma to the region of the ankle and hind foot. All but one patient were males. Clinically a subtalar dislocation resembles a complicated fracture dislocation of the ankle but a definitive diagnosis can only be made radiographically. The mechanism of injury and radiographic features of this injury are discussed.

El-Khoury, G.Y.; Yousefzadeh, D.K.; Mulligan, G.M.; Moore, T.E.

1982-05-01

120

Subtalar dislocation  

International Nuclear Information System (INIS)

Over a period of three years we have seen nine patients with subtalar dislocation, all of whom sustained violent trauma to the region of the ankle and hind foot. All but one patient were males. Clinically a subtalar dislocation resembles a complicated fracture dislocation of the ankle but a definitive diagnosis can only be made radiographically. The mechanism of injury and radiographic features of this injury are discussed. (orig.)

 
 
 
 
121

A Multi-centre Study to Assess the Long-term Performance of the Summit™ Hip in Primary Total Hip Replacement  

Science.gov (United States)

Rheumatoid Arthritis; Osteoarthritis; Post-traumatic Arthritis; Collagen Disorders; Avascular Necrosis; Traumatic Femoral Fractures; Nonunion of Femoral Fractures; Congenital Hip Dysplasia; Slipped Capital Femoral Epiphysis

2014-09-08

122

Hip Replacement  

Medline Plus

Full Text Available Hip Replacement Introduction Severe arthritis in the hip can lead to severe pain and inability to walk. Doctors may recommend surgery for people suffering from severe arthritis in the hip to ...

123

Hip Replacement  

Science.gov (United States)

Hip replacement is surgery for people with severe hip damage. The most common cause of damage is ... therapy, pain medicines, and exercise haven't helped, hip replacement surgery might be an option for you. ...

124

Hip Revision  

Medline Plus

Full Text Available ... guys. You know, you probably look at my dislocations. My dislocations are probably more anterior than posterior. And I ... is where you're going to see those dislocations. And so it's a matter of managing that ...

125

Screening programmes for developmental dysplasia of the hip in newborn infants  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english BACKGROUND Uncorrected developmental dysplasia of the hip (DDH) is associated with long term morbidity such as gait abnormalities, chronic pain and degenerative arthritis. OBJECTIVE To determine the effect of different screening programmes for DDH on the incidence of l [...] ate presentation of congenital hip dislocation. METHODS Search methods: Searches were performed in CENTRAL (The Cochrane Library), MEDLINE and EMBASE (January 2011) supplemented by searches of clinical trial registries, conference proceedings, cross references and contacting expert informants. Selection criteria: Randomized, quasi-randomized or cluster trials comparing the effectiveness of screening programmes for DDH. Data collection and analysis: Three independent review authors assessed study eligibility and quality, and extracted data. MAIN RESULTS No study examined the effect of screening (clinical and/or ultrasound) and early treatment versus not screening and later treatment. AUTHORS' CONCLUSIONS There is insufficient evidence to give clear recommendations for practice. There is inconsistent evidence that universal ultrasound results in a significant increase in treatment compared to the use of targeted ultrasound or clinical examination alone. Neither of the ultrasound strategies have been demonstrated to improve clinical outcomes including late diagnosed DDH and surgery. The studies are substantially underpowered to detect significant differences in the uncommon event of late detected DDH or surgery. For infants with unstable hips or mildly dysplastic hips, use of delayed ultrasound and targeted splinting reduces treatment without significantly increasing the rate of late diagnosed DDH or surgery.

Damon, Shorter; Timothy, Hong; David A., Osborn.

2013-04-01

126

Optimierung der HIP-Parameter unter Berücksichtigung der Verdichtungsmechanismen  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The knowledge of high-temperature deformation mechanism in crystalline materials is applied to powder densification by hot-isostatic pressing (HIP). It turns out that, depending on the HIP conditions and the amount of densification, dislocation or diffusion mechanisms provide the densification. The prevailing densifying mechanism controls the shape of remaining pores and thus exerts an influence on the mechanical properties of the final HIP product. Using mechanism diagrams ("HIP map...

Arzt, Eduard

1985-01-01

127

Management of hip instability in trisomy 21.  

Science.gov (United States)

The unstable hip in Trisomy 21 presents with a spectrum of hip instability with different problems at different ages. What links this multiphase problem, in many patients, is the final common pathway of untreated instability, that of a stiff, dislocated, and often-painful hip, leading to significant functional disability. Historically, the results of treating hip instability in Trisomy 21 were variable with a notable frequency of poor results. With an improved understanding of the Trisomy 21 hip in terms of its pathoanatomy and a more contemporary surgical approach to hip reconstruction, much improved results can be expected and indeed have recently been shown. The mainstay of treatment for the habitual dislocation group presenting before 8 years of age is the femoral varus derotation osteotomy. The older group presenting with painful subluxation often show signs of secondary acetabular dysplasia and thus are best treated with redirectional acetabular osteotomy with or without the use of femoral varus derotation osteotomy. The presence of radiographic features of degenerative arthritis in the fixed dislocation group precludes the use of joint-preserving techniques for hip reconstruction, and these patients can achieve excellent results with total joint arthroplasty. The natural history, historical results, assessment, treatment, and management of complications of hip instability in Trisomy 21 are addressed in this paper. PMID:23764791

Kelley, Simon P; Wedge, John H

2013-01-01

128

Arthroscopic management of an intraarticular osteochondroma of the hip  

Directory of Open Access Journals (Sweden)

Full Text Available The role of hip arthroscopy in the management of femoroacetabular impingement (FAI has been advancing rapidly. In this case report, we describe the use of hip arthroscopy to successfully treat a femoral neck osteochondroma that caused a symptomatic labral tear in a 37 year old woman. Hip arthroscopy offers several advantages to surgical dislocation of the hip in the management of intra articular pathology and FAI. Hip arthroscopy is minimally invasive without the significant trauma to hip musculature, is useful in treatment of labral tears generated by FAI, and can be used to resect small lesions on the femoral head.

Bryan T. Kelley

2009-06-01

129

Hip Revision  

Medline Plus

Full Text Available Hip Revision Featuring the ZMR® Hip System Tapered Distal Stem Zimmer, Inc. Winfield, Illinois September 3, 2009 Welcome to this OR Live webcast presentation, brought to you by Zimmer. ...

130

Hip Replacement  

Medline Plus

Full Text Available ... surgery is also yours. This reference summary will review the benefits and risks of this surgery. HipJoint ... overweight patients, losing weight may help relieve the stress on the hip joint. If an operation is ...

131

Hip Replacement  

Science.gov (United States)

... corticosteroids are injected into the hip joint. If exercise and medication do not relieve pain and improve joint function, the doctor may suggest a less complex corrective surgery before proceeding to hip replacement. One common ...

132

Hip Replacement  

Medline Plus

Full Text Available ... the benefits and risks of this surgery. HipJoint Femur Pelvis Anatomy The hip joint joins the leg to the pelvis. The head of the femur, or thighbone, has the shape of a ball ...

133

Hip Replacement  

Medline Plus

Full Text Available ... 10/04/2013 1 For overweight patients, losing weight may help relieve the stress on the hip joint. If an operation is done, losing weight will also increase the success of the hip ...

134

Hip Revision  

Medline Plus

Full Text Available ... Revision Featuring the ZMR® Hip System Tapered Distal Stem Zimmer, Inc. Winfield, Illinois September 3, 2009 Welcome ... a hybrid hip arthroplasty with a cemented femoral stem and an acetabular shell. You can see the ...

135

Routine complete capsular closure during hip arthroscopy.  

Science.gov (United States)

The utility of hip arthroscopy has recently progressed beyond diagnostic to therapeutic purposes addressing central and peripheral compartment pathologies. Capsulotomy provides freedom of visualization and instrumentation. The contribution to hip stability of both dynamic and static hip structures is not fully understood. However, both basic science biomechanical and clinical outcome studies have exhibited a relevant role of the capsule in hip stability. Though rare, iatrogenic post-arthroscopy subluxation and dislocation have been reported. Therefore many surgeons have cautioned against aggressive capsulotomy or capsulectomy without repair, because of the potential for precipitation of iatrogenic hip instability. We typically perform a "T" capsulotomy and recommend complete capsular closure in conjunction with labral repair and osseous femoral and acetabular treatment. A safe, efficient, and effective method to accomplish complete capsular closure is presented to reduce iatrogenic postoperative hip instability. PMID:23875156

Harris, Joshua D; Slikker, William; Gupta, Anil K; McCormick, Frank M; Nho, Shane J

2013-05-01

136

Advanced techniques in hip arthroscopy.  

Science.gov (United States)

The indications for hip arthroscopy are expanding as the understanding of hip disease increases. Improved instrumentation and technical skills also have facilitated the ability to treat some hip disorders arthroscopically. Femoroacetabular impingement (FAI) is increasingly recognized as a disorder that can lead to progressive intra-articular chondral and labral injury. Although FAI is usually treated through an open approach, limited-open and all-arthroscopic approaches have been described. Various arthroscopic techniques allow treatment of labral and acetabular rim pathology as well as peripheral compartment femoral head-neck abnormalities. Early outcomes of limited-open and all-arthroscopic treatment of FAI are only beginning to be reported but appear to compare favorably with those of open dislocation procedures. Although labral tears traditionally have been treated with simple débridement, concerns have been raised about the consequences of removing the labrum. Modified portal placement and hip-specific suture anchors are now being used in an effort to repair some labral tears. Snapping hip disorders typically are treated nonsurgically. For persistent symptoms, arthroscopic release is successful, compared with open release, and allows additional evaluation of the hip joint during surgery. Diagnosis and management of traumatic and atraumatic hip instability continue to be challenging. Hip arthroscopy has been shown to be effective in the treatment of hip instability in some patients. The extra-articular peritrochanteric space is receiving increased attention. The arthroscopic anatomy has been well defined, but the treatment of greater trochanteric pain syndrome and arthroscopic repair of abductor tendon tears are only beginning to be reported. Improved techniques and longer-term outcomes studies will further define the optimal role of hip arthroscopy. PMID:19385552

Larson, Christopher M; Guanche, Carlos A; Kelly, Bryan T; Clohisy, John C; Ranawat, Anil S

2009-01-01

137

Analysis of the acetabulum by CT scan in Japanese with osteoarthritis of the hip  

International Nuclear Information System (INIS)

The morphology of the acetabulum was analyzed by CT scan in 66 Japanese patients with osteoarthritis of the hip mainly following congenital dislocation or dysplasia. The CT scan data was analyzed to standardize the pelvic inclination in all directions. In these patients, the acetabular floor had thickened and the acetabulum was located in the anterolateral portion. The bilateral difference in the acetabular anteversion angle was not different between patients and normal individuals, but the acetabular sector angle in patients was smaller than in the normal subjects. As the stage of osteoarthritis of the hip advanced, the thickness of the acetabular floor in the center and posterior portions and the anterior sector angle increased, and the lateralization of the acetabulum advanced, but the anteversion angle decreased. A bone-forming change is characteristic of the anterior acetabulum and acetabular fossa in the center and posterior portions in Japanese patients with osteoarthritis of the hip. In comparison with data obtained by standard radiography, these changes detected by CT scan corresponded to an increase of the width of a tear drop, the lateralization of the femoral head and the lack of the support of the femoral head from the acetabulum. (author)

138

Analysis of the acetabulum by CT scan in Japanese with osteoarthritis of the hip  

Energy Technology Data Exchange (ETDEWEB)

The morphology of the acetabulum was analyzed by CT scan in 66 Japanese patients with osteoarthritis of the hip mainly following congenital dislocation or dysplasia. The CT scan data was analyzed to standardize the pelvic inclination in all directions. In these patients, the acetabular floor had thickened and the acetabulum was located in the anterolateral portion. The bilateral difference in the acetabular anteversion angle was not different between patients and normal individuals, but the acetabular sector angle in patients was smaller than in the normal subjects. As the stage of osteoarthritis of the hip advanced, the thickness of the acetabular floor in the center and posterior portions and the anterior sector angle increased, and the lateralization of the acetabulum advanced, but the anteversion angle decreased. A bone-forming change is characteristic of the anterior acetabulum and acetabular fossa in the center and posterior portions in Japanese patients with osteoarthritis of the hip. In comparison with data obtained by standard radiography, these changes detected by CT scan corresponded to an increase of the width of a tear drop, the lateralization of the femoral head and the lack of the support of the femoral head from the acetabulum. (author)

Ishibashi, Masanori [Keio Univ., Tokyo (Japan). School of Medicine

1997-11-01

139

Framing Hip Hop: New Methodologies for New Times  

Science.gov (United States)

This article revisits the central impulse behind early advocacy for ethnographic approaches to hip hop--that critics should try as much as possible to limit their own certainties around what hip hop can and might mean. While ethnographic approaches can engender the kinds of personal dislocations that allow for this negotiation, they do not…

Dimitriadis, Greg

2015-01-01

140

Importancia de la Relación Anatómica entre el nervio Isquiático y el Margen Posterior del Acetábulo en la Luxación Posterior de la Cadera / Anatomic Value of the Sciatic Nerve with the Posterior Margin of the Acetabulum in Posterior Dislocation of the Hip  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish La luxación posterior de la articulación de la cadera es un trauma que puede sufrir una buena parte de la población, donde se puede comprometer el nervio isquiático, produciendo serios problemas en la vida del individuo afectado. El conocimiento de la relación anatómica entre el nervio isquiático y [...] el margen posterior del acetábulo propiciará um diagnóstico preciso y precoz de esta lesión. Con el objetivo de estudiar la relación topográfica del nervio isquiático con el margen posterior del acetábulo y entregar antecedentes anatómicos para las cirugías ortopédicas en caso de luxaciones posteriores de la cadera, se estudiaron 40 miembros inferiores formolizados, de cadáveres humanos, adultos y de ambos sexos, localizados en los laboratorios de anatomía topográfica de la Universidad Estadual de Ciencias de la Salud de Alagoas, Brasil. En 19 miembros inferiores (47,7%) el nervio isquiático pasó directamente sobre el margen posterior del acetábulo y en los 21 restantes (53,3%), el nervio estuvo distante del margen mencionado, distancia que varió de 6 a 49 mm. Los resultados obtenidos muestran la estrecha relación entre el nervio isquiático y el margen acetabular, lo que acrecienta la posibilidad de lesión del nervio em los casos de luxación posterior de la cadera. Abstract in english The posterior dislocation of the hip joint is a trauma that can undergo a large part of the population, which may compromise the sciatic nerve, causing serious problems in the life of the affected individual. Knowledge of the anatomical relationship between the sciatic nerve and the posterior margin [...] of the acetabulum will facilitate accurate diagnosis and early um this injury. In order to study the topographical relationship of the sciatic nerve with the posterior margin of the acetabulum and provide background for orthopedic anatomical in posterior dislocations of the hip were studied 40 lower limbs formolized human cadavers, adults of both sexes , located in the topographical anatomy laboratories of the Universidade Estadual de Ciencias da Saude, Alagoas, Brasil. In 19 limbs (47.7%) sciatic nerve passed directly over the posterior margin of the acetabulum and the remaining 21 (53.3%), the nerve passed distal to the acetabular margin, distance ranging from 6-49 mm. The results show the close relationship between the sciatic nerve and the acetabular margin, which increases the possibility of nerve injury in posterior dislocation of the hip.

A. C, da Rocha; R. F, Monte Bispo; R. D, da Cruz; F. T. A, dos Santos; T. F. A, dos Santos; E, Olave; C. F, Sousa-Rodrigues.

2012-09-01

 
 
 
 
141

Congenital scoliosis  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Congenital scoliosis is the most frequent congenital deformity of the spine. Congenital curvatures are due to anomalous development of the vertebrae (failure of formation and/or segmentation). Congenital scoliosis is believed to be related to an insult to the fetus during spine embryological development, and associated malformations (heart, spinal cord, kidney...) are frequently observed. A perfect understanding of the natural history of the deformity and the treatment principles will allow b...

Langmead, Frederick

2003-01-01

142

Unilateral hip osteoarthritis: can we predict the outcome of the other hip?  

International Nuclear Information System (INIS)

The objective of this study was to define, in unilateral hip osteoarthritis (OA), factors predicting the outcome of the other hip. We examined the anteroposterior radiographs of the pelvis of 95 white patients with unilateral idiopathic (56 patients) or secondary to congenital hip diseases (39 patients) OA. The other hip was free from symptoms (pain or limping) at the initial examination and without radiographic evidence of OA; it was what we call a ''normal'' hip. Two parameters were evaluated: (1) the type of osteoarthritis of the involved hip and (2) the range of four radiographic indices of the contralateral hip: the sourcil inclination (weight-bearing surface), the acetabular angle, the Wiberg's center-edge angle, and the neck-shaft angle. Follow-up radiographs for the hips that remained OA-free were available for 10 to 35 years and for those that developed OA, at the time of initial symptoms, range 2 to 31 years. Logistic regression analysis showed that the presence of idiopathic OA in one hip had a statistically significant effect on the development of OA on the other hip (p<0.001). Minor deviations of radiographic indices of the contralateral hip is not a predictive factor for its outcome. When the radiographic indices are examined together with the pathology of the involved hip, only WBS was shown to have a significant effect to the development of OA and its type (p < 0.001). The following conclusions can be drawn from this study: 1. Patient with idiopathic Om this study: 1. Patient with idiopathic OA of one hip is at increased risk of developing OA in the other hip. 2. The outcome of the other hip cannot be predicted only on the basis of the evaluation of its radiographic indices. 3. Among the different indices, WBS seems to have a strong influence toward the development of OA. (orig.)

143

Unilateral hip osteoarthritis: can we predict the outcome of the other hip?  

Energy Technology Data Exchange (ETDEWEB)

The objective of this study was to define, in unilateral hip osteoarthritis (OA), factors predicting the outcome of the other hip. We examined the anteroposterior radiographs of the pelvis of 95 white patients with unilateral idiopathic (56 patients) or secondary to congenital hip diseases (39 patients) OA. The other hip was free from symptoms (pain or limping) at the initial examination and without radiographic evidence of OA; it was what we call a ''normal'' hip. Two parameters were evaluated: (1) the type of osteoarthritis of the involved hip and (2) the range of four radiographic indices of the contralateral hip: the sourcil inclination (weight-bearing surface), the acetabular angle, the Wiberg's center-edge angle, and the neck-shaft angle. Follow-up radiographs for the hips that remained OA-free were available for 10 to 35 years and for those that developed OA, at the time of initial symptoms, range 2 to 31 years. Logistic regression analysis showed that the presence of idiopathic OA in one hip had a statistically significant effect on the development of OA on the other hip (p<0.001). Minor deviations of radiographic indices of the contralateral hip is not a predictive factor for its outcome. When the radiographic indices are examined together with the pathology of the involved hip, only WBS was shown to have a significant effect to the development of OA and its type (p < 0.001). The following conclusions can be drawn from this study: 1. Patient with idiopathic OA of one hip is at increased risk of developing OA in the other hip. 2. The outcome of the other hip cannot be predicted only on the basis of the evaluation of its radiographic indices. 3. Among the different indices, WBS seems to have a strong influence toward the development of OA. (orig.)

Vossinakis, I.C. [General Hospital of Volos, Orthopaedic Department, Volos (Greece); Georgiades, G. [General Hospital of Tripoli, Tripoli Greece, Orthopaedic Department, Athens (Greece); Hartofilakidis, G. [University of Athens Medical School, Department of Orthopaedics, Athens (Greece); Kafidas, D.

2008-10-15

144

Hip Replacement  

Science.gov (United States)

... for more information The most common reason for hip replacement is osteoarthritis. Osteoarthritis occurs when the cartilage covering the ends of the bones where they meet to form joints breaks down. This causes the ... hip damage include injuries, fractures, bone tumors, rheumatoid arthritis, ...

145

A Study to Assess the Long-term Performance of SmartSet® HV and SmartSet® GHV Bone Cements in Primary Total Hip Replacement  

Science.gov (United States)

Rheumatoid Arthritis; Osteoarthritis; Post-traumatic Arthritis; Collagen Disorders; Avascular Necrosis; Traumatic Femoral Fractures; Nonunion of Femoral Fractures; Congenital Hip Dysplasia; Slipped Capital Femoral Epiphysis

2014-09-04

146

A Randomised Single Centre Study to Compare the Long-Term Wear Characteristics of Marathon™ and Enduron™ Polyethylene Cup Liners in Primary Total Hip Replacement  

Science.gov (United States)

Osteoarthritis; Post-Traumatic Arthritis; Collagen Disorders; Avascular Necrosis; Traumatic Femoral Fractures; Nonunion of Femoral Fractures; Congenital Hip Dysplasia; Slipped Capital Femoral Epiphysis

2009-04-07

147

A Multi-centre Study to Assess the Long-term Performance of the Pinnacle™ Cup With a Polyethylene-on-metal Bearing in Primary Total Hip Replacement  

Science.gov (United States)

Rheumatoid Arthritis; Osteoarthritis; Post-traumatic Arthritis; Collagen Disorders; Avascular Necrosis; Traumatic Femoral Fractures; Nonunion of Femoral Fractures; Congenital Hip Dysplasia; Slipped Capital Femoral Epiphysis.

2013-02-12

148

A Two Centre Study to Assess the Long-term Performance of the Pinnacle™ Cup With a Metal-on-Metal Bearing in Primary Total Hip Replacement  

Science.gov (United States)

Rheumatoid Arthritis; Osteoarthritis; Post-traumatic Arthritis; Collagen Disorders; Avascular Necrosis; Traumatic Femoral Fractures; Nonunion of Femoral Fractures; Congenital Hip Dysplasia; Slipped Capital Femoral Epiphysis

2014-04-29

149

A Single Centre Study to Assess the Long-term Performance of the Pinnacle™ Cup With a Ceramic-on-ceramic Bearing in Primary Total Hip Replacement  

Science.gov (United States)

Rheumatoid Arthritis; Osteoarthritis; Post-traumatic Arthritis; Collagen Disorders; Avascular Necrosis; Traumatic Femoral Fractures; Nonunion of Femoral Fractures; Congenital Hip Dysplasia; Slipped Capital Femoral Epiphysis

2014-08-13

150

A Randomised Single Centre Study to Compare the Long-term Performance of 4 Designs of the DePuy Ultima LX Stem in Primary Total Hip Replacement  

Science.gov (United States)

Osteoarthritis; Post-traumatic Arthritis; Collagen Disorder; Avascular Necrosis; Traumatic Femoral Fractures; Nonunion of Femoral Fractures; Congenital Hip Dysplasia; Slipped Capital Femoral Epiphysis

2013-05-29

151

Dislocation Creep in Magnesium Calcite  

Science.gov (United States)

To investigate the effect of dissolved Mg on plastic deformation of calcite, we performed triaxial deformation experiments on synthetic calcite with varying amount of Mg content. Mixtures of powders of calcite and dolomite were isostatically hot pressed (HIP) at 850° C and 300 MPa confining pressure for different intervals (2 to 20hrs) resulting in homogeneous aggregates of high-magnesium calcite; Mg content varied from 0.07 to 0.17 mol%. Creep tests were performed at differential stresses from 20 to 160 MPa at 700 to 800° C. Grain sizes before and after deformation were determined from the images obtained from scanning electron microscope (SEM) and optical microscope. Grain sizes are in the range of 5 to 20 microns depending on the HIP time, and decrease with increasing magnesium content. Both BSE images and chemical analysis suggest that all dolomite are dissolved and the Mg distribution is homogeneous through the sample, after 2 hrs HIP. At stresses below 40 MPa, the samples deformed in diffusion region (Coble creep), as described previously by Herwegh. The strength decreases with increasing magnesium content, owing to the difference of grain size. At stresses above 80 MPa, the stress exponent is greater than 3, indicating an increased contribution of dislocation creep. The transition between diffusion to dislocation creep occurs at higher stresses for the samples with higher magnesium content and smaller grain size. Preliminary data suggests a slight increase in strength with increasing magnesium content, but more tests are needed to verify this effect. In a few samples, some strain weakening may have been evident. The activation energy in the transition region (at 80 MPa) is ˜200 KJ/mol with no dependence on magnesium content, agreeing with previous measurements of diffusion creep in natural and synthetic marbles.

Xu, L.; Xiao, X.; Evans, B. J.

2003-12-01

152

Birmingham hip resurfacing: the prevalence of failure.  

Science.gov (United States)

Despite the increasing interest and subsequent published literature on hip resurfacing arthroplasty, little is known about the prevalence of its complications and in particular the less common modes of failure. The aim of this study was to identify the prevalence of failure of hip resurfacing arthroplasty and to analyse the reasons for it. From a multi-surgeon series (141 surgeons) of 5000 Birmingham hip resurfacings we have analysed the modes, prevalence, gender differences and times to failure of any hip requiring revision. To date 182 hips have been revised (3.6%). The most common cause for revision was a fracture of the neck of the femur (54 hips, prevalence 1.1%), followed by loosening of the acetabular component (32 hips, 0.6%), collapse of the femoral head/avascular necrosis (30 hips, 0.6%), loosening of the femoral component (19 hips, 0.4%), infection (17 hips, 0.3%), pain with aseptic lymphocytic vascular and associated lesions (ALVAL)/metallosis (15 hips, 0.3%), loosening of both components (five hips, 0.1%), dislocation (five hips, 0.1%) and malposition of the acetabular component (three hips, 0.1%). In two cases the cause of failure was unknown. Comparing men with women, we found the prevalence of revision to be significantly higher in women (women = 5.7%; men = 2.6%, p < 0.001). When analysing the individual modes of failure women had significantly more revisions for loosening of the acetabular component, dislocation, infection and pain/ALVAL/metallosis (p < 0.001, p = 0.004, p = 0.008, p = 0.01 respectively). The mean time to failure was 2.9 years (0.003 to 11.0) for all causes, with revision for fracture of the neck of the femur occurring earlier than other causes (mean 1.5 years, 0.02 to 11.0). There was a significantly shorter time to failure in men (mean 2.1 years, 0.4 to 8.7) compared with women (mean 3.6 years, 0.003 to 11.0) (p < 0.001). PMID:20884969

Carrothers, A D; Gilbert, R E; Jaiswal, A; Richardson, J B

2010-10-01

153

Tratamento da luxação paralítica do quadril na paralisia cerebral tetraparética espástica com osteotomia do fêmur e do ilíaco sem abertura da cápsula articular (capsuloplastia) / Hip dislocation treatment in cerebral palsy patients with spastic quadriplegia with femoral and pelvic osteotomies, without opening of the joint capsule (capsuloplasty)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese OBJETIVO: Mostrar o planejamento pré-operatório, e os resultados do tratamento cirúrgico da luxação paralítica do quadril em pacientes com paralisia cerebral. A técnica utilizada foi a osteotomia derrotatória e varizante do fêmur proximal, associada à osteotomia do ilíaco tipo Dega, sem abertura da [...] cápsula articular. MÉTODOS: Realizamos um estudo retrospectivo de 10 quadris em oito pacientes com paralisia cerebral tipo tetraparesia espástico, submetidos a tratamento cirúrgico entre 2003 e 2005 com a mesma técnica cirúrgica. Foram avaliados parâmetros clínicos e radiográficos pré e pós-operatórios, bem como o planejamento pré-operatório com uso do intensificador de imagem. Os parâmetros clínicos analisados foram: dor, dificuldade de higiene e dificuldade de posicionamento. Os parâmetros radiológicos foram os índices de Reimers, índice acetabular e ângulo cervicodiafisário. Estes resultados foram submetidos a análise estatística. RESULTADOS: Obtivemos bons resultados com esta técnica. Com um seguimento médio de três anos, todos os quadris estavam reduzidos na última consulta, com alto grau de satisfação dos familiares, em relação ao tratamento. Além disso, mostramos que o planejamento pré-operatório com uso do intensificador de imagem nos permite a redução e estabilização desses quadris sem a necessidade de capsuloplastia. CONCLUSÃO: Os autores concluíram que no tratamento da luxação do quadril dos pacientes com paralisia cerebral tetraparéticos espásticos com o planejamento pré-operatório, não é necessária a capsuloplastia para estabilização da articulação coxofemoral. Abstract in english OBJECTIVES: To show the preoperative planning and the results of surgical treatment for paralytic hip dislocation in children with cerebral palsy. The techniques used were proximal femoral varus derotation osteotomy and Dega osteotomy without opening of the joint capsule. METHODS: We performed a ret [...] rospective review of ten hips in eight patients with cerebral palsy with spastic quadriplegia treated with surgery from 2003 to 2005, by the same surgical technique. Were assessed clinical and radiological outcomes before and after surgery, as well as the preoperative planning with the use of fluoroscope. The clinical parameters analyzed were: pain, difficulty performing personal hygiene, and sitting balance. The radiological parameters were Reimer's index, acetabular index and neck-shaft angle. These results were submitted to statistical analysis. RESULTS: We obtained good results with this technique. After an average follow-up of three years, all hips were stable in the last assessment, and there was a high level of satisfaction among the families in relation to the treatment. We also show that preoperative planning with fluoroscopy enables the reduction and stabilization of the hips without the need for capsuloplasty. CONCLUSION: The authors conclude that in the treatment of hip dislocation in patients with Cerebral Palsy with spastic quadriplegia, it is not necessary to open the joint capsule to stabilize the coxofemoral joint.

Fernando, Farcetta Junior; Fabio Peluzo, Abreu; Daniella Lins, Neves; Paulo Facciola, Kertzman; Alexandre, Zuccon; Simone de Oliveira, Bittencourt; Davi Moshe Leopold, Lopes.

154

Hip ultrasound  

International Nuclear Information System (INIS)

In newborns, US has an established role in the detection and management of developmental dysplasia of the hip. Later in childhood, when the limping child is a major diagnostic dilemma, US is extremely helpful in the identification of the varied disease processes underlying this condition, as transient synovitis, septic arthritis, Perthes disease and slipped femoral capital epiphysis. In adolescent practicing sporting activities, US is an excellent means to identify apophyseal injures about the pelvic ring, especially when avulsions are undisplaced and difficult-to-see radiographically. Later on, in the adulthood, US is an effective modality to diagnose tendon and muscle injuries about the hip and pelvis, identify effusion or synovitis within the hip joint or its adjacent bursae and guide the treatment of these findings. The aim of this article is to provide a comprehensive review of the most common pathologic conditions about the hip, in which the contribution of US is relevant for the diagnostic work-up.

155

Hip Revision  

Medline Plus

Full Text Available ... Featuring the ZMR® Hip System Tapered Distal Stem Zimmer, Inc. Winfield, Illinois September 3, 2009 Welcome to ... OR Live webcast presentation, brought to you by Zimmer. Hi, I'm Dr. Todd Sekundiak from Creighton ...

156

Hip Revision  

Medline Plus

Full Text Available ... that time. Here's Scott's initial preoperative x-ray, where we see a hybrid hip arthroplasty with a ... that's a good thing -- especially in these cases where there's a fair bit of bone loss. So ...

157

Hip Replacement  

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Full Text Available ... inability to walk. Hip arthritis can result from chronic inflammation of the joint or may be caused ... include but are not limited to heart attacks, strokes, pneumonia, and blood clots in the legs. These ...

158

Hip Replacement  

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Full Text Available ... also yours. This reference summary will review the benefits and risks of this surgery. HipJoint Femur Pelvis ... by eating a low-fat diet. Careful, regular exercise can also help reduce excess weight. Surgical Treatment ...

159

Hip ultrasound  

Energy Technology Data Exchange (ETDEWEB)

In newborns, US has an established role in the detection and management of developmental dysplasia of the hip. Later in childhood, when the limping child is a major diagnostic dilemma, US is extremely helpful in the identification of the varied disease processes underlying this condition, as transient synovitis, septic arthritis, Perthes disease and slipped femoral capital epiphysis. In adolescent practicing sporting activities, US is an excellent means to identify apophyseal injures about the pelvic ring, especially when avulsions are undisplaced and difficult-to-see radiographically. Later on, in the adulthood, US is an effective modality to diagnose tendon and muscle injuries about the hip and pelvis, identify effusion or synovitis within the hip joint or its adjacent bursae and guide the treatment of these findings. The aim of this article is to provide a comprehensive review of the most common pathologic conditions about the hip, in which the contribution of US is relevant for the diagnostic work-up.

Martinoli, Carlo, E-mail: carlo.martinoli@libero.it [Radiologia, DISC, Università di Genova, Largo Rosanna Benzi 8, I-16132 Genoa (Italy); Garello, Isabella; Marchetti, Alessandra; Palmieri, Federigo; Altafini, Luisa [Radiologia, DISC, Università di Genova, Largo Rosanna Benzi 8, I-16132 Genoa (Italy); Valle, Maura [Radiologia, Gaslini Children Hospital, Genova (Italy); Tagliafico, Alberto [Radiologia, National Institute for Cancer Research, Genoa (Italy)

2012-12-15

160

Hip Replacement  

Medline Plus

Full Text Available ... and the socket is prepared to accept an artificial surface known as a “prosthesis.” This document is ... the femur and socket in the pelvis. The artificial replacement parts are called “prostheses.” Hip replacement is ...

 
 
 
 
161

Hip Replacement  

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Full Text Available ... operation. Weight can be lost by eating a low-fat diet. Careful, regular exercise can also help ... help of a walker initially to take the pressure off of your new hip. Eventually, you will ...

162

Is surgery recommended in adults with neglected congenital muscular torticollis? A prospective study  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Congenital muscular torticollis is the third most common congenital musculoskeletal anomaly after dislocation of the hip and clubfoot. When diagnosed early, it is obvious that it can be managed with good or excellent results. The aim of this prospective study was to determine the efficacy of surgery in neglected adult cases. Methods From January 2003 to June 2007, 18 adult skeletally matured patients were surgically treated for neglected congenital muscular torticollis and prospectively followed (at least one year. Bipolar release was performed in all patients. Radiography and the modified Lee's scoring system which included function and cosmesis, were used to measure the surgical results. Complications were also recorded. Results Four cases were lost during follow-up. Of the remaining 14 patients, 10 cases were males and 4 females. The age at operation ranged from 18 to 32 (average 21.9 years. The mean follow-up period was 2.5 years (range 1–5 years. Excellent results were noted in 7 patients, good in 5, and poor in 2 patients. Significant improvement (>10° of the cervico-thoracic scoliosis was noted only in 3 of 10 patients. Conclusion Patients with congenital muscular torticollis can benefit from surgical treatment even in adulthood. Surgical bipolar sectioning of the sternocleidomastoid muscle should be considered even in adults with irreversible facial and skeletal deformities. The surgery restores the range of neck motion and resolves the head tilt; therefore it can improve the quality of life. This procedure is an effective and relatively complication-free method.

Sharifi Reza

2008-11-01

163

Congenital insensitivity to pain with anhidrosis (CIPA): the spectrum of radiological findings  

International Nuclear Information System (INIS)

Background: Congenital insensitivity to pain with anhidrosis (CIPA) is an exceedingly rare, hereditary, sensory autonomic neuropathy (HSAN). Aim: To evaluate the various skeletal manifestations and cranial CT features in children affected by CIPA. Materials and methods: In the semidesert area of the Negev, the Bedouin tribes constitute a closed society where consanguineous marriages are the custom. This has resulted in a group of 20 children being affected by this rare autosomal recessive HSAN. The skeletal surveys and CT scans of these 20 Bedouin patients, 12 girls and 8 boys, ages ranging between 1 month and 8 years, were retrospectively analysed. Cranial CT scans were performed in ten children because of neonatal hypotonia and psychomotor retardation. The skeletal findings were classified as follows: fractures, joint deformities, joint dislocations, osteomyelitis, avascular necrosis and acro-osteolysis. Results: All 20 patients had fractures of the extremities and acro-osteolysis of the fingers. Six had joint deformities. Three children had recurrent hip joint dislocations and another three had avascular necrosis. Ten patients presented with osteomyelitis of the limbs, acetabulum and scapula. The cranial CT scans disclosed mild brain volume loss with some ventriculomegaly. Conclusions: CIPA is a severe autosomal recessive condition that leads to self-mutilation early in life and to fractures, osteomyelitis and limb amputation in older children. Mental retardation ion in older children. Mental retardation is common. Death from hyperpyrexia occurs in almost 20 % of patients in the first 3 years of life. (orig.)

164

Congenital insensitivity to pain with anhidrosis (CIPA): the spectrum of radiological findings  

Energy Technology Data Exchange (ETDEWEB)

Background: Congenital insensitivity to pain with anhidrosis (CIPA) is an exceedingly rare, hereditary, sensory autonomic neuropathy (HSAN). Aim: To evaluate the various skeletal manifestations and cranial CT features in children affected by CIPA. Materials and methods: In the semidesert area of the Negev, the Bedouin tribes constitute a closed society where consanguineous marriages are the custom. This has resulted in a group of 20 children being affected by this rare autosomal recessive HSAN. The skeletal surveys and CT scans of these 20 Bedouin patients, 12 girls and 8 boys, ages ranging between 1 month and 8 years, were retrospectively analysed. Cranial CT scans were performed in ten children because of neonatal hypotonia and psychomotor retardation. The skeletal findings were classified as follows: fractures, joint deformities, joint dislocations, osteomyelitis, avascular necrosis and acro-osteolysis. Results: All 20 patients had fractures of the extremities and acro-osteolysis of the fingers. Six had joint deformities. Three children had recurrent hip joint dislocations and another three had avascular necrosis. Ten patients presented with osteomyelitis of the limbs, acetabulum and scapula. The cranial CT scans disclosed mild brain volume loss with some ventriculomegaly. Conclusions: CIPA is a severe autosomal recessive condition that leads to self-mutilation early in life and to fractures, osteomyelitis and limb amputation in older children. Mental retardation is common. Death from hyperpyrexia occurs in almost 20 % of patients in the first 3 years of life. (orig.)

Schulman, H.; Tsodikow, V.; Hertzanu, Y. [Dept. of Radiology, Soroka University Medical Centre, Beer-Sheva (Israel); Einhorn, M.; Levy, Y.; Shorer, Z. [Dept. of Pediatrics, Soroka University Medical Centre, Beer-Sheva (Israel)

2001-10-01

165

The use of a dual-articulation acetabular cup system to prevent dislocation after primary total hip arthroplasty: analysis of 384 cases at a mean follow-up of 15 years  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The concept of a dual articulation acetabular cup was developed by Prof. Bousquet in 1974. This concept has been shown to provide high stability after revision and primary total hip arthroplasty. The aim of our study was to evaluate the incidence of prosthetic instability in a consecutive homogeneous series of 384 primary dual mobility cups. Incidence of instability and implant survival were evaluated. Mean follow-up was 15.3 years (range, 12–20). There was no early or late instability. On...

Philippot, Remi; Camilleri, Jean Philippe; Boyer, Bertrand; Adam, Philippe; Farizon, Frederic

2008-01-01

166

The total costs of a displaced femoral neck fracture: comparison of internal fixation and total hip replacement: A randomised study of 146 hips  

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We randomised 143 patients –age 75 years or older–with displaced femoral neck fracture to either internal fixation or total hip replacement (THR) and compared the socio-economic consequences. In the internal fixation group, 34 of 78 hips underwent secondary surgery. In the THR group, 12 of 68 hips dislocated, the majority in mentally impaired patients. We calculated the total hospital costs for two years after operation. When secondary surgery was included, there was no difference in cost...

Johansson, Torsten; Bachrach-lindstro?m, Margareta; Aspenberg, Per; Jonsson, Dick; Wahlstro?m, Ola

2006-01-01

167

CONGENITAL MYOPATHIES  

Directory of Open Access Journals (Sweden)

Full Text Available Congenital myopathies are a heterogeneous group of disorders characterized by muscle weakness and typical histopathological changes at muscle biopsy. In spite of recent advances on molecular genetics, their classification is still based on morphological criteria. Phenotypical and genetic heterogeneicity are common findings. The clinical symptoms usually appear in infancy, but adult-onset cases have been described. In this review, we focus on the current knowledges on congenital myopathies and we report our experience on adult-onset cases.

MT. Dotti

2009-11-01

168

Hip pointers.  

Science.gov (United States)

The term, hip pointer, is applied in the setting of a blunt trauma injury to the iliac crest. It typically occurs in contact and collision sports and can cause significant pain and loss of practice or game time. A direct blow results in subperiosteal edema with hematoma formation within surrounding muscle or soft tissue and bone contusion of the iliac crest. Conservative management with compression, ice, antiinflammatories, and rehabilitation exercises are successful in treating hip pointers. Injection therapy with the use of local anesthetic can be helpful in minimizing pain and increasing function to allow more rapid return to play. PMID:23522513

Hall, Matthew; Anderson, Jeffrey

2013-04-01

169

[Osteotomy of the iliac fossa in the treatment of a hip dislocation associated with a two-column acetabular fracture. Modification of the ilioinguinal approach to avoid an extended surgical approach].  

Science.gov (United States)

Open reduction and internal fixation is the treatment of choice for displaced acetabular fractures. The surgical approach depends on the fracture type, concomitant injuries, and general condition of the patient. The ilioinguinal approach provides a good exposure to the medial wall and is associated with an acceptable degree of surgical trauma. Exposure of the joint surface, however, is difficult when using the ilioinguinal approach. We report a case of a polytraumatized 39-year-old patient who sustained a posterior hip displacement and a two-column acetabular fracture. An osteotomy of the iliac ala was performed via an ilioinguinal approach to fragments of the acetabular surface that were displaced distally. Thereby, reposition of a craniolateral fragment was achieved without the need to extend the surgical approach or to perform a second incision. PMID:15045201

Pape, H-C; Zelle, B; Sitnik, J; Gänsslen, A; Krettek, C

2004-03-01

170

Hip joints  

Science.gov (United States)

The human hips are an example of a ball-and-socket joint. Ball-and-socket joints have the ability to rotate in a circular motion. The joint where the arm connects to the shoulder is also a type of ball-and-socket joint.

Connie Raab (National Institutes of Health;)

2006-05-17

171

Hip Revision  

Medline Plus

Full Text Available ... re going to initially look at Scott's preoperative x-rays and just kind of describe the situation that ... up to that time. Here's Scott's initial preoperative x-ray, where we see a hybrid hip arthroplasty with ...

172

Hip Replacement  

Medline Plus

Full Text Available ... also yours. This reference summary will review the benefits and risks of this surgery. HipJoint Femur Pelvis ... of movement under the strict supervision of a physical therapist. As you ... may resume most of your usual activities. You may need the help of a walker ...

173

Proximal Femoral Megaprosthesis for Failed Total Hip Arthroplasty  

Directory of Open Access Journals (Sweden)

Full Text Available Background: The purpose of this study was to assess the clinical outcome and complicationsof megaprostheses for massive proximal femoral bone loss after failedtotal hip arthroplasty.Methods: Between June 1997 and December 2002, 12 patients (12 hips with massiveproximal femoral deficiencies had reconstruction of the hip using proximalfemoral megaprostheses. The average age of the patients was 59 years (range25 to 75.Results: At an average of 5.7 years (range 3.3 to 9 after surgery, eight patients (67%had a satisfactory result, one had fair and three had poor results. The complicationsincluded dislocation in 5 (42%, deep infection in 4 (33%, ectopicossification in 1 (8%, leg shortening > 3 cm in 2 (16.7%, displacement ofthe greater trochanter in 3 (25% and aseptic loosening of the megaprosthesisin 1 (8%. The early dislocation rate was 75% but this was subsequentlyreduced to 14% in the later period after use of an abduction brace postoperatively.The average Harris hip score of the 12 patients preoperatively was 30points (range 16-42. The average Harris hip score of the 9 patients with aretained megaprosthesis was 83 points (range 68 to 92.Conclusion: Patients with a failed total hip arthroplasty and massive proximal femoralbone loss can be salvaged with a proximal femoral megaprosthesis if there isno other alternative. However, this procedure is technically demanding andhas a high rate of complications. The routine use of an abduction brace postoperativelyis advised to reduce the dislocation rate.

Shu-Tai Shih

2007-02-01

174

Bioball universal modular neck adapter as a salvage for failed revision total hip arthroplasty.  

Science.gov (United States)

Management of recurrent dislocation of total hip arthroplasty is often a challenging and daunting task. Re-revision of such a total hip prosthesis may not be easy as the removal of a well-fixed, fully coated stem is extremely difficult. We managed to salvage instability in three revision hip cases in which the fully coated stem had subsided by using a bioball universal neck adapter without changing the femoral stem or acetabular cup. PMID:24133315

Vaishya, Raju; Sharma, Mrinal; Chaudhary, Rajeev Raj

2013-09-01

175

Bioball universal modular neck adapter as a salvage for failed revision total hip arthroplasty  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Management of recurrent dislocation of total hip arthroplasty is often a challenging and daunting task. Re-revision of such a total hip prosthesis may not be easy as the removal of a well-fixed, fully coated stem is extremely difficult. We managed to salvage instability in three revision hip cases in which the fully coated stem had subsided by using a bioball universal neck adapter without changing the femoral stem or acetabular cup.

Vaishya, Raju; Sharma, Mrinal; Chaudhary, Rajeev Raj

2013-01-01

176

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... patient needs to recognize the limitations of a new hip. This reference summary reviews necessary steps that ... order to get the most out of a new hip. Anatomy The hip joint joins the pelvis ...

177

Bursitis of the Hip  

Science.gov (United States)

MENU Return to Web version Bursitis of the Hip Overview What is bursitis? Bursitis (say: “burse-eye- ... bursitis is swelling affecting the bursae of the hip. Bursitis does not only happen in the hip. ...

178

Hip Replacement - Physical Therapy  

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Full Text Available ... Summary Introduction Hip replacement surgery is a very successful and safe operation. Long-term success mostly depends ... hip. Summary Hip replacement surgery is a very successful and safe operation. The long-term results of ...

179

Congenital leukemia.  

Science.gov (United States)

Congenital leukemia is a rare but a well-documented disease in which leukemic process is detected at birth or very shortly thereafter (Philip McCoy and Roy Overton, Commun Clin Cytom 22:85-88, 1995). These leukemias represent approximately 0.8 % of all childhood leukemias. We present a case of congenital acute myeloid leukemia manifesting from the very first day of birth. Diagnosis of acute myeloid leukemia was suspected by the presence of blasts in the peripheral blood smear and was confirmed on bone marrow by flowcytometry. Karyotyping revealed Trisomy 21. PMID:25332567

Raj, Aishwarya; Talukdar, Sewali; Das, Smita; Gogoi, Pabitra Kumar; Das, Damodar; Bhattacharya, Jina

2014-09-01

180

Characteristics of children with hip displacement in cerebral palsy  

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Full Text Available Abstract Background Hip dislocation in children with cerebral palsy (CP is a common and severe problem. The dislocation can be avoided, by screening and preventive treatment of children with hips at risk. The aim of this study was to analyse the characteristics of children with CP who develop hip displacement, in order to optimise a hip surveillance programme. Methods In a total population of children with CP a standardised clinical and radiological follow-up of the hips was carried out as a part of a hip prevention programme. The present study is based on 212 children followed until 9–16 years of age. Results Of the 212 children, 38 (18% developed displacement with Migration Percentage (MP >40% and further 19 (9% MP between 33 and 39%. Mean age at first registration of hip displacement was 4 years, but some hips showed MP > 40% already at two years of age. The passive range of hip motion at the time of first registration of hip displacement did not differ significantly from the findings in hips without displacement. The risk of hip displacement varied according to CP-subtype, from 0% in children with pure ataxia to 79% in children with spastic tetraplegia. The risk of displacement (MP > 40% was directly related to the level of gross motor function, classified according to the gross motor function classification system, GMFCS, from 0% in children in GMFCS level I to 64% in GMFCS level V. Conclusion Hip displacement in CP often occurs already at 2–3 years of age. Range of motion is a poor indicator of hips at risk. Thus early identification and early radiographic examination of children at risk is of great importance. The risk of hip displacement varies according to both CP-subtype and GMFCS. It is sometimes not possible to determine subtype before 4 years of age, and at present several definitions and classification systems are used. GMFCS is valid and reliable from 2 years of age, and it is internationally accepted. We recommend a hip surveillance programme for children with CP with radiographic examinations based on the child's age and GMFCS level.

Wagner Philippe

2007-10-01

 
 
 
 
181

Quantitative assessment of bone scintigraphy in the hip joint disease  

International Nuclear Information System (INIS)

Quantitative assessment of bone scintigraphy was performed in fifty-six patients with hip joint disease including femoral neck fracture, aseptic necrosis of the femoral head, traumatic dislocation of the hip, Perthes disease, and transient synovitis of the hip. In the static study, bone scintigraphy was obtained 3 hours after injection of sup(99m)Tc-MDP by gamma camera equipped with a computer and uptake ratios were calculated. In the dynamic study, bone scintigraphy was performed in one, 3 and 5 hours after injection of radionuclide. Femoral head uptake ratio was markedly decreased in osteonecrosis following femoral neck fracture and characteristically increased in aseptic necrosis of the femoral head but prolonged retention of sup(99m)Tc-MDP could be observed. Uptake ratios of epiphysis were decreased in Perthes disease but normal in transient synovitis of the hip. Static and dynamic study of bone scintigraphy may be useful for early diagnosis and treatment in the hip joint disease. (author)

182

Congenital syphilis.  

Science.gov (United States)

The most outstanding aspects of congenital or fetal syphilis, emphasizing its epidemiology, clinical aspects, diagnosis, prevention and treatment, are studied. The authors point out the increasing frequency of this treponematosis, which should still be considered as a worldwide endemic disease, though it is foreseeable and tractable. Some new data about the problem are provided, apropos of recent observations. PMID:471514

Bueno, M; Pérez-González, J; Sarria, A

1979-01-01

183

Dislocations in icosahedral quasicrystals.  

Science.gov (United States)

Dislocations in quasicrystals, as a direct result of the lack of translational symmetry in these materials, possess various salient features. The Burgers vector of a dislocation in an icosahedral quasicrystal is a 6-dimensional vector, which reflects the fact that the dislocation, besides the phonon-type strain field analogous to dislocations in ordinary crystals, is associated inseparably with a further type of defect, the phasons. Phasons are critically involved in the formation and motion of dislocations in quasicrystals and govern the macroscopic plastic behaviour of these materials. In this article the properties of dislocations in icosahedral quasicrystals are comprehensively reviewed, starting from a continuum-mechanical description, via core-structure simulation, to their full experimental characterization. The experimental results presented address the icosahedral phases in the well explored systems Al-Pd-Mn and Zn-Mg-Dy. PMID:22760204

Feuerbacher, Michael

2012-10-21

184

Using the Graf method of ultrasound examination to classify hip dysplasia in neonates Using the Graf method of ultrasound examination to classify hip dysplasia in neonates  

Directory of Open Access Journals (Sweden)

Full Text Available Developmental dysplasia of the hip (DDH is one of the most common congenital orthopedic anomalies. Ultrasound examination employing the Graf method is used to diagnose DDH. We conducted a retrospective cross?sectional study of 222 neonatal patients (140 females and 82 males submitted to ultrasound examination of the right and left hips between January of 2009 and May of 2011. The mean age was 5.0 days. The patients were grouped by laterality, mean alpha (? and beta (? angles (in degrees, and hip type (as determinedby the Graf classification. The data collected were statistically correlated.Mean ? angle values were higher in males than in females, as well as being higher for right hips than for left hips (p in both genders and on both sides, having been found in 82.32% of the examinations of males and in 71.09% of those of females. The right hip was classified as type Ia in 78.38% of the examinations, and the left hip was classified as type Ia in 72.07%. Type IIa hips (i.e., immature hips were found in 12.8% of the examinations of males and in 20% of those of females. The right hip was classified as type IIa in 13.96% of the examinations, and the left hip was classified as type IIa in 20.72%. The remaining hip types were less common. We emphasize the importance of ultrasound as a standard methodof screening for DDH.nulo

Bruno de Castro Paixão Jacobino

2012-08-01

185

Congenital chylothorax.  

Science.gov (United States)

The objective of this paper is a retrospective study of all infants treated for congenital chylothorax at the Royal Children's Hospital (RCH), Melbourne, Australia and King Fahad National Guard Hospital (KFNGH), Riyadh, Kingdom of Saudi Arabia. The charts of all infants with congenital chylothorax admitted to RCH over a period of 13 years, June 1982-August 1994, and admissions to KFNGH over a 7-year period, June 1992-August 1998 inclusive, were reviewed including management outcome and complications. There were 19 infants, 13 from RCH and 6 from KFNGH; 11 females and 8 males. Three infants were managed antenatally. Fifteen infants presented immediately after birth. Seven were born with hydrops fetalis, 6 infants had syndromes and 10 infants were born prematurely. Regular infant feeding formula and/or breast milk were used successfully in 12 infants, while in 7 infants medium chain triglycerides (MCT) rich formula was used. Sixteen infants were mechanically ventilated with 75% of them ventilated for chylothorax in term, and preterm infants is good even in the presence of hydrops. Breast milk and/or regular infant feeding formula should be used initially before proceeding to MCT-rich formula, which may be necessary in some cases. Surgery should be considered if conservative management of congenital chylothorax fails after 4-5 weeks. PMID:11012135

Al-Tawil, K; Ahmed, G; Al-Hathal, M; Al-Jarallah, Y; Campbell, N

2000-01-01

186

Dislocation model of fracture  

International Nuclear Information System (INIS)

Papers dealing with study on mechanisms of submicricrack formation and propagation using dislocation representations are analyzed. Cases of brittle and ductile fracture of materials as well as models of dislocationless (amorphous) zone at the growing crack tip are considered. Dislocation models of fracture may be used when studying the processes of deformation and accumulation of damages in elements of nuclear facilities

187

Is Cup Positioning Challenged in Hips Previously Treated With Periacetabular Osteotomy?  

DEFF Research Database (Denmark)

After periacetabular osteotomy (PAO), some patients develop osteoarthritis with need of a total hip arthroplasty (THA). We evaluated the outcome of THA following PAO and explored factors associated with inferior cup position and increased polyethylene wear. Follow-up were performed 4 to 10years after THA in 34 patients (38 hips) with previous PAO. Computer analysis evaluated cup position and wear rates. No patient had dislocations or revision surgery. Median scores were: Harris hip 96, Oxford hip 38 and WOMAC 78. Mean cup anteversion and abduction angles were 22(o) (range 7°-43°) and 45° (range 28°-65°). Outliers of cup abduction were associated with persisting dysplasia (CE

Hartig-Andreasen, Charlotte; Stilling, Maiken

2013-01-01

188

Pediatric Transepiphyseal Seperation and Dislocation of the Femoral Head  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Pediatric hip fractures and dislocations are rare in practice and are related to high-energy trauma. The incidence of postoperative avascular necrosis is increasing, especially in the case of transepiphyseal fractures. Surgery is the most common form of treatment, and its timing is important for prognosis of the fracture. Patients and their families should be informed about the possibility of avascular necrosis and further complications related to the fracture.

Mehmet Elmadag; Ceylan, Hasan H.; Ahmet Can Erdem; Kerem Bilsel; Gokcer Uzer; Mehmet Ali Acar

2013-01-01

189

Pediatric transepiphyseal seperation and dislocation of the femoral head.  

Science.gov (United States)

Pediatric hip fractures and dislocations are rare in practice and are related to high-energy trauma. The incidence of postoperative avascular necrosis is increasing, especially in the case of transepiphyseal fractures. Surgery is the most common form of treatment, and its timing is important for prognosis of the fracture. Patients and their families should be informed about the possibility of avascular necrosis and further complications related to the fracture. PMID:23573441

Elmadag, Mehmet; Ceylan, Hasan H; Erdem, Ahmet Can; Bilsel, Kerem; Uzer, Gokcer; Acar, Mehmet Ali

2013-01-01

190

Dislocation spectroscopy of crystals  

International Nuclear Information System (INIS)

The new method for studying the dislocations energy characteristics, based on investigation of interaction of moving dislocations with directly introduced electron and hole centers is proposed. The studies on alkali-halide crystals KCl, NaCl, RBr, LiF and KI, containing electron F- and hole VK- and Me++(Cu++, Ag++, Tl++, In++)-centers, are carried out. The study on temperature dependence of interaction of the dislocations with the F-centers made it possible to determine the position of the electron dislocation zone (EDZ) in the crystal zone scheme. The EDZ in KCl is remote from the zone bottom by ? 2.2 eV. It is shown, that the dislocations transfer holes from the centers, located below the hole dislocation zone (HDZ) (X+, In++, Tl++, VK), on to the centers located above the HDZ, the (Cu+, Ag+)-centers. Such a process does not depend on temperature. The HDZ position in the crystal zone scheme is determined. In the KCl crystal it is remote from the vertex of the valent zone by ? 1.6 eV. The effective radii of the dislocations interaction with the electron F- and hole X+, VK, Tl++-centers are determined

191

Congenital syphilis  

International Nuclear Information System (INIS)

In recent years, marked increase in incidence of congenital syphilis has occurred throughout the world due to changes in social norms and development of penicillin-resistant strains. Early diagnosis plays an important role in congenital syphilis as the clinical manifestations may simulate many other conditions in the paediatric age group. The authors analyzed 52 cases of congenital syphilis admitted to the department of paediatrics, Chosun University Hospital, clinically and radiologically. Among them, 18 cases were born in this hospital and 34 cases were admitted from OPD, during the period of 8 years from January, 1975 to December, 1982. The results obtained were as follows; 1. In 28 of 34 cases (82%), the first clinical manifestations were below the age of 3 months. 2. Among the 52 cases, a male predominance was observed with a male to female ratio of 2 : 1. 3. The serologic test (VDRL) of the 52 studied cases showed reactive response in 49 cases (94%), and that of syphilitic mothers except 6 cases, reactive in all studied cases. 4. The major manifestations of the 52 cases were bone tenderness (12%) and swelling of the joints (7%) in skeletal system, hepatosplenomegaly (79%) and skin lesions (73%) in extraskeletal one. 5. The radiological skeletal changes were detected in 45 of 52 cases (87%), and the commonest findings were detected in 45 of 52 cases (87%), and the commonest findings were metaphysitis (83%) and periostitis (81%). The most characteristic type of me (81%). The most characteristic type of metaphysitis were transverse trophic line (74%) and zone of rarefaction (65%). 6. The commonest bones to be affected were growing metaphyses of the long bones, particulary about the wrist and the knee. The order of frequency were radius (80%), uina (80%), tibia (77%), femur (69%) and humerus (40%)

192

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... to help thousands of people suffering from hip pain. A small-incision total hip arthroplasty and arthroscopic hip femoroacetabular impingement resection. Hip pain is not limited to senior citizens. It can ...

193

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... increasingly being recognized as a cause of hip osteoarthritis. Arthroscopy of the hip is a mainstream surgical ... hip replacement because he has a disease called osteoarthritis, which is essentially a destruction of the hip ...

194

Computer aided diagnosis and treatment planning for developmental dysplasia of the hip  

Science.gov (United States)

The developmental dysplasia of the hip (DDH) is a congenital malformation affecting the proximal femurs and acetabulum that are subluxatable, dislocatable, and dislocated. Early diagnosis and treatment is important because failure to diagnose and improper treatment can result in significant morbidity. In this paper, we designed and implemented a computer aided system for the diagnosis and treatment planning of this disease. With the design, the patient received CT (computed tomography) or MRI (magnetic resonance imaging) scan first. A mixture-based PV partial-volume algorithm was applied to perform bone segmentation on CT image, followed by three-dimensional (3D) reconstruction and display of the segmented image, demonstrating the special relationship between the acetabulum and femurs for visual judgment. Several standard procedures, such as Salter procedure, Pemberton procedure and Femoral Shortening osteotomy, were simulated on the screen to rehearse a virtual treatment plan. Quantitative measurement of Acetabular Index (AI) and Femoral Neck Anteversion (FNA) were performed on the 3D image for evaluation of DDH and treatment plans. PC graphics-card GPU architecture was exploited to accelerate the 3D rendering and geometric manipulation. The prototype system was implemented on PC/Windows environment and is currently under clinical trial on patient datasets.

Li, Bin; Lu, Hongbing; Cai, Wenli; Li, Xiang; Meng, Jie; Liang, Zhengrong

2005-04-01

195

Total hip arthroplasty for arthrodesed hips.  

Directory of Open Access Journals (Sweden)

Full Text Available The benefits of converting an ankylosed or arthrodesed hip to total hip arthroplasty have been reported in the literature as have the technical difficulties associated with this procedure. This review, however, outlines the experience of a single surgeon (WJMB at a single institution using uncemented prostheses. Between November 1991 and June 1996, 5 arthrodesed hips underwent uncemented total hip arthroplasty in 4 males and 1 female. Clinical and radiological follow-up review was for at least three years in all patients. In general, patients were satisfied with the outcome of their surgery with Harris Hip scores improving from an average of 62 preoperatively to an average of 72 postoperatively. The surgical outcome in these difficult cases was not as satisfactory as for routine total hip arthroplasty. Meticulous preoperative planning is required to aim toward leg length restoration and restoration of the abductor moment arm. A modular prosthesis allows versatility at surgery.

Howard MB

2002-06-01

196

Metal-on-Metal Hip Arthroplasty: Does Early Clinical Outcome Justify the Chance of an Adverse Local Tissue Reaction?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Larger diameter metal-on-metal (MOM) bearing hips offer the possibility of low wear and reduced risk of dislocation. We reviewed the first 126 patients (131 hips) who had a large-head (36-mm) MOM bearing surface to report the early clinical outcome and especially to determine the occurrence of dislocation and wear-related concerns. The minimum followup was 5 years (mean, 5.6 years; range, 5–7 years). We found a 98% survivorship free of component revision. No hips had been revised for dis...

Ho, Henry; Engh, Charles A.

2010-01-01

197

[Primary anterior shoulder dislocation].  

Science.gov (United States)

Anterior dislocations of the shoulder are common among young males following trauma. Dislocations may be associated with fractures, rotator cuff tears as well as nerve and vascular injuries. However, recurrent instability is the major complication following primary dislocation of the shoulder. After physical examination and radiologic evaluation the humeral head may be reduced using a variety of methods. The methods differ in sedation, analgesia, body and arm position, type of manipulation, number of staff required for manipulation and finally, rates of success and complications. Following successful reduction, the arm should be fixed in an arm sling for at least three weeks. Young and active patients may be advised to undergo primary arthroscopic repair due to high risk of recurrent dislocation and cumulative damage to the shoulder. PMID:22164938

Chechik, Ofir; Khashan, Morsi; Amar, Eyal; Dolkart, Oleg; Mozes, Gabriel; Maman, Eran

2011-02-01

198

Long-term endothelial cell loss after traumatic dislocation and repositioning of Artisan phakic IOL  

Digital Repository Infrastructure Vision for European Research (DRIVER)

PURPOSE: To evaluate long-term endothelial cell loss after traumatic dislocation and repositioning of an Artisan phakic intraocular lens (PIOL). METHODS: Traumatic PIOL dislocation occurred in the patient's left eye 4 months after uneventful implantation for unilateral congenital myopia. Using the Konan semi-automated analysis method, endothelial cell density was measured preoperatively, before Artisan repositioning, and 1, 2, and 4 years after primary implantation. RESULTS: Endothelial cell ...

Grignolo, Federico; Sanctis, Ugo

2008-01-01

199

Dislocations in bilayer graphene  

Science.gov (United States)

Dislocations represent one of the most fascinating and fundamental concepts in materials science. Most importantly, dislocations are the main carriers of plastic deformation in crystalline materials. Furthermore, they can strongly affect the local electronic and optical properties of semiconductors and ionic crystals. In materials with small dimensions, they experience extensive image forces, which attract them to the surface to release strain energy. However, in layered crystals such as graphite, dislocation movement is mainly restricted to the basal plane. Thus, the dislocations cannot escape, enabling their confinement in crystals as thin as only two monolayers. To explore the nature of dislocations under such extreme boundary conditions, the material of choice is bilayer graphene, the thinnest possible quasi-two-dimensional crystal in which such linear defects can be confined. Homogeneous and robust graphene membranes derived from high-quality epitaxial graphene on silicon carbide provide an ideal platform for their investigation. Here we report the direct observation of basal-plane dislocations in freestanding bilayer graphene using transmission electron microscopy and their detailed investigation by diffraction contrast analysis and atomistic simulations. Our investigation reveals two striking size effects. First, the absence of stacking-fault energy, a unique property of bilayer graphene, leads to a characteristic dislocation pattern that corresponds to an alternating ABAC change of the stacking order. Second, our experiments in combination with atomistic simulations reveal a pronounced buckling of the bilayer graphene membrane that results directly from accommodation of strain. In fact, the buckling changes the strain state of the bilayer graphene and is of key importance for its electronic properties. Our findings will contribute to the understanding of dislocations and of their role in the structural, mechanical and electronic properties of bilayer and few-layer graphene.

Butz, Benjamin; Dolle, Christian; Niekiel, Florian; Weber, Konstantin; Waldmann, Daniel; Weber, Heiko B.; Meyer, Bernd; Spiecker, Erdmann

2014-01-01

200

[Squatting cast for biomechanical treatment of decentred hip joints].  

Science.gov (United States)

The so-called "congenital" luxation of the hip joint is endemic in Central Europe and occurs in about 1?% of all newborn infants. By the means of ultrasonographic diagnosis according to the Graf method an early detection instantly after birth has become a good clinical routine in the German-speaking countries. Sonography-based conservative treatment has become the gold standard. The cast in squatting ("human") position is a standard procedure in order to retain the originally decentred or unstable hip joints in the reduced position: 100° flexion and 50° abduction are necessary to fix the hip joint in the reduced position without the risk of avascular necrosis. After the fixation in a squatting-cast, a period of functional bracing in flexed position enhances bony maturation. This two-phase functional conservative treatment can avoid later osteotomies or even early total hip replacement. PMID:25531512

Mühlbacher, E; Lick-Schiffer, W; Lojpur, M; Baumgartner, F; Spieß, T; Tschauner, C

2014-12-01

 
 
 
 
201

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... success mostly depends on the patient, though. The muscles around the hip joint must be strengthened after ... allows the hip to move, it is the muscles of the pelvis and legs that make moving ...

202

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... limitations of a new hip. This reference summary reviews necessary steps that must be taken in order ... slightly outward. Turning it inward can put significant stress on your new hip. This is important while ...

203

Taper Hip Prosthesis  

Medline Plus

Full Text Available ... the minimally invasive anterial lateral approach to the right hip in this gentleman. We're going to ... the anterior superior at the spine of the right hip. And at this point we'll begin. ...

204

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... happens if: • The operated leg is allowed to cross beyond the midline of the body • The hip ... it to turn inward • allow the leg to cross over the midline Do not bend your hip ...

205

On the permanent hip-stabilizing effect of atmospheric pressure.  

Science.gov (United States)

Hip joint dislocations related to total hip arthroplasty (THA) are a common complication especially in the early postoperative course. The surgical approach, the alignment of the prosthetic components, the range of motion and the muscle tone are known factors influencing the risk of dislocation. A further factor that is discussed until today is atmospheric pressure which is not taken into account in the present THA concepts. The aim of this study was to investigate the impact of atmospheric pressure on hip joint stability. Five joint models (Ø 28-44 mm), consisting of THA components were hermetically sealed with a rubber capsule, filled with a defined amount of fluid and exposed to varying ambient pressure. Displacement and pressure sensors were used to record the extent of dislocation related to intraarticular and ambient pressure. In 200 experiments spontaneous dislocations of the different sized joint models were reliably observed once the ambient pressure was lower than 6.0 kPa. Increasing the ambient pressure above 6.0 kPa immediately and persistently reduced the joint models until the ambient pressure was lowered again. Displacement always exceeded half the diameter of the joint model and was independent of gravity effects. This experimental study gives strong evidence that the hip joint is permanently stabilized by atmospheric pressure, confirming the theories of Weber and Weber (1836). On basis of these findings the use of larger prosthetic heads, capsular repair and the deployment of an intracapsular Redon drain are proposed to substantially decrease the risk of dislocation after THA. PMID:24938930

Prietzel, Torsten; Hammer, Niels; Schleifenbaum, Stefan; Kaßebaum, Eric; Farag, Mohamed; von Salis-Soglio, Georg

2014-08-22

206

Congenital candidiasis.  

Science.gov (United States)

Congenital candidiasis (CC) is a rare disease with less than 100 cases being reported in the literature. It presents within six days of life with manifestations ranging from localized skin disease to systemic involvement in the form of respiratory distress, sepsis, and death. We report a neonate who presented with diffuse pustular eruption on erythematous background involving face, trunk, and palms within 24 h after birth. Candida albicans was identified in 10% potassium hydroxide (KOH) smear and culture from the pustules. Intravenous fluconazole and topical ketoconazole were given and the condition improved completely in two weeks. CC is rare and needs to be differentiated from other conditions presenting with pustular lesions at birth in order to avoid complications. Early diagnosis and prompt treatment of this condition is important as untreated cases carry a mortality rate of 8-40%. PMID:25506564

Aruna, Chintaginjala; Seetharam, Kolalapudi

2014-11-01

207

Congenital candidiasis  

Science.gov (United States)

Congenital candidiasis (CC) is a rare disease with less than 100 cases being reported in the literature. It presents within six days of life with manifestations ranging from localized skin disease to systemic involvement in the form of respiratory distress, sepsis, and death. We report a neonate who presented with diffuse pustular eruption on erythematous background involving face, trunk, and palms within 24 h after birth. Candida albicans was identified in 10% potassium hydroxide (KOH) smear and culture from the pustules. Intravenous fluconazole and topical ketoconazole were given and the condition improved completely in two weeks. CC is rare and needs to be differentiated from other conditions presenting with pustular lesions at birth in order to avoid complications. Early diagnosis and prompt treatment of this condition is important as untreated cases carry a mortality rate of 8-40%. PMID:25506564

Aruna, Chintaginjala; Seetharam, Kolalapudi

2014-01-01

208

Congenital amusia.  

Science.gov (United States)

For most people, music, like language, is acquired effortlessly in early life. But a few percent of the population have lifelong difficulties in the perception and production of music. In this chapter we discuss psycho-acoustic and behavioral studies that have attempted to delineate the nature of the auditory perceptual deficits in this group and consider whether these difficulties extend outside the musical domain. Finally, we review structural imaging studies in this group which point to subtle anomalies in temporal and frontal areas. We suggest that amusia can be considered a disorder of neural development, which has relatively specific consequences at the behavioral level. Studies of congenital amusia provide a unique window on the neurocognitive architecture of music processing. PMID:23622169

Williamson, Victoria J; Stewart, Lauren

2013-01-01

209

Inflatable hip protectors  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Falls and fall-related injuries are crucial health problems among older adults, and hip protectors are designed to reduce fall-related injuries in this population. This thesis explores the technology of inflatable hip protectors with the aim to provide insight for future designers and manufacturers of these devices. The thesis comprises two studies. In the first, a mathematical model of an inflatable hip protector is developed. For system identification, a prototype of an inflatable hip prote...

Arjmand Boroujeni, Seyed Ehsan

2012-01-01

210

Effective dislocation lines in continuously dislocated crystals II. Congruences of effective dislocations  

CERN Document Server

The notion of a congruence of effective dislocation lines endowed with the nonvanishing local Burgers vector is introduced. Particularly, the class of congruences of principal Volterra-type effective dislocation lines associated with the dislocation densities (tensorial as well as scalar) is distinguished in order to investigate the geometry of continuized defective crystals in terms of these densities. It is shown that effective dislocation lines can be endowed with the dislocation line tension and with a finite self-energy.

Trzesowski, Andrzej

2007-01-01

211

Low revision rate after total hip arthroplasty in patients with pediatric hip diseases  

DEFF Research Database (Denmark)

Background The results of primary total hip arthroplasties (THAs) after pediatric hip diseases such as developmental dysplasia of the hip (DDH), slipped capital femoral epiphysis (SCFE), or Perthes' disease have been reported to be inferior to the results after primary osteoarthritis of the hip (OA). Materials and methods We compared the survival of primary THAs performed during the period 1995-2009 due to previous DDH, SCFE, Perthes' disease, or primary OA, using merged individual-based data from the Danish, Norwegian, and Swedish arthroplasty registers, called the Nordic Arthroplasty Register Association (NARA). Cox multiple regression, with adjustment for age, sex, and type of fixation of the prosthesis was used to calculate the survival of the prostheses and the relative revision risks. Results 370,630 primary THAs were reported to these national registers for 1995-2009. Of these, 14,403 THAs (3.9%) were operated due to pediatric hip diseases (3.1% for Denmark, 8.8% for Norway, and 1.9% for Sweden) and 288,435 THAs (77.8%) were operated due to OA. Unadjusted 10-year Kaplan-Meier survival of THAs after pediatric hip diseases (94.7% survival) was inferior to that after OA (96.6% survival). Consequently, an increased risk of revision for hips with a previous pediatric hip disease was seen (risk ratio (RR) 1.4, 95% CI: 1.3-1.5). However, after adjustment for differences in sex and age of the patients, and in fixation of the prostheses, no difference in survival was found (93.6% after pediatric hip diseases and 93.8% after OA) (RR 1.0, CI: 1.0-1.1). Nevertheless, during the first 6 postoperative months more revisions were reported for THAs secondary to pediatric hip diseases (RR 1.2, CI: 1.0-1.5), mainly due to there being more revisions for dislocations (RR 1.8, CI: 1.4-2.3). Comparison between the different diagnosis groups showed that the overall risk of revision after DDH was higher than after OA (RR 1.1, CI: 1.0-1.2), whereas the combined group Perthes' disease/SCFE did not have a significantly different riskof revision to that of OA (RR 0.9, CI: 0.7-1.0), but had a lower risk than after DDH (RR 0.8, CI: 0.7-1.0). Interpretation After adjustment for differences in age, sex, and type of fixation of the prosthesis, no difference in risk of revision was found for primary THAs performed due to pediatric hip diseases and those performed due to primary OA.

Engesæter, Lars B; Engesæter, Ingvild Ø

2012-01-01

212

Hip Injuries and Disorders  

Science.gov (United States)

Your hip is the joint where your thigh bone meets your pelvis bone. Hips are called ball-and-socket joints because the ... a cup-like space in your pelvis. Your hips are very stable. When they are healthy, it ...

213

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... The ileo-psoas muscle allows the hip to bend forward. The gluteal muscles allow the hip to bend backward. The abductor muscles allow the leg to ... of the body • The hip is allowed to bend more than 80 or 90 degrees • The operated ...

214

Prevention of hip fracture with hip protectors.  

Science.gov (United States)

The prevention of fractures amongst older people consists of (i) prevention and treatment of osteoporosis, (ii) prevention of falling and (iii) prevention of fractures using injury-site protection. As the great majority of hip fractures are caused by a sideways fall with direct impact on the greater trochanter of the proximal femur, one approach to prevention is the use of an adequately configured padded, firm-shield external hip protector. With this type of two-part design, the impacting force and energy are, at the time of the fall-impact, first weakened by the padding part of the protector and then diverted away from the greater trochanter by the shield part of the same. Following this line, a series of consecutive studies by the Accident & Trauma Research Center at the UKK Institute, Tampere, Finland, found that a padded, strong-shield hip protector was effective in preventing hip fractures. In the context of the wider literature on hip protectors, these more encouraging results suggest the need for a more rigorous regulation of protector design and characteristics. Alongside inadequacies of design, the other most frequent general problem with hip protectors is compliance. Not all elderly people with a high risk of hip fracture will agree to use hip protectors and in those who do, long-term adherence may decrease. Caregiver motivation and involvement appear therefore to be crucial. PMID:16926206

Kannus, Pekka; Parkkari, Jari

2006-09-01

215

Dislocation Dynamics During Plastic Deformation  

CERN Document Server

The book gives an overview of the dynamic behavior of dislocations and its relation to plastic deformation. It introduces the general properties of dislocations and treats the dislocation dynamics in some detail. Finally, examples are described of the processes in different classes of materials, i.e. semiconductors, ceramics, metals, intermetallic materials, and quasicrystals. The processes are illustrated by many electron micrographs of dislocations under stress and by video clips taken during in situ straining experiments in a high-voltage electron microscope showing moving dislocations. Thus, the users of the book also obtain an immediate impression and understanding of dislocation dynamics.

Messerschmidt, Ulrich

2010-01-01

216

MRI of cervical facet dislocation  

Energy Technology Data Exchange (ETDEWEB)

The MRI examinations of eight patients with cervical vertebral dislocation demonstrated by conventional radiography were reviewed. All patients had axial and sagittal T 1- and T 2-weighted imaging on a 1.5-T unit. This revealed unilateral partial facet dislocation (in two patients), bilateral partial facet dislocation (in two), unilateral complete dislocation (in two) and bilateral complete facet dislocation (in two). In six patients there was cord contusion, three had focal disc protrusions and four unilateral absence of normal flow void in one of the cervical vertebral arteries. In all cases, the dislocated facets were shown well on the far-lateral sagittal images. (orig.). With 5 figs., 1 tab.

Leite, C.C. [Department of Radiology, The University of Texas Health Science Center, 7703 F. Curl Drive, San Antonio, TX 78284-7800 (United States); Escobar, B.E. [Department of Radiology, The University of Texas Health Science Center, 7703 F. Curl Drive, San Antonio, TX 78284-7800 (United States); Bazan, C. III [Department of Radiology, The University of Texas Health Science Center, 7703 F. Curl Drive, San Antonio, TX 78284-7800 (United States); Jinkins, J.R. [Department of Radiology, The University of Texas Health Science Center, 7703 F. Curl Drive, San Antonio, TX 78284-7800 (United States)

1997-08-01

217

Dislocations Jam At Any Density  

CERN Document Server

Crystalline materials deform in an intermittent way via dislocation-slip avalanches. Below a critical stress, the dislocations are jammed within their glide plane due to long-range elastic interactions and the material exhibits plastic response, while above this critical stress the dislocations are mobile (the unjammed phase) and the material fails. We use dislocation dynamics and scaling arguments in two dimensions to show that the critical stress grows with the square root of the dislocation density. Consequently, dislocations jam at any density, in contrast to granular materials, which only jam below a critical density.

Tsekenis, Georgios; Dahmen, Karin A

2011-01-01

218

Dislocations jam at any density.  

Science.gov (United States)

Crystalline materials deform in an intermittent way via dislocation-slip avalanches. Below a critical stress, the dislocations are jammed within their glide plane due to long-range elastic interactions and the material exhibits plastic response, while above this critical stress the dislocations are mobile (the unjammed phase) and the material flows. We use dislocation dynamics and scaling arguments in two dimensions to show that the critical stress grows with the square root of the dislocation density. Consequently, dislocations jam at any density, in contrast with granular materials, which only jam below a critical density. PMID:21469802

Tsekenis, Georgios; Goldenfeld, Nigel; Dahmen, Karin A

2011-03-11

219

Arthrography of the hip in children  

International Nuclear Information System (INIS)

A method by which bilateral hip arthrography was performed under general anaesthesia in 130 infants and children 1 month to 7 years of age is described. Significant contractures of the adductor muscles had been corrected before the examination. Most of the children were girls with unilateral congenital idiopathic hip instability detected before the age of one year. From films exposed in standardized projections valuable information was obtained about the configuration of the joint cavity and the size and shape of the femoral head. Criteria for normal appearance in infants of ages 2 to 12 months are presented. More reliable details on the relation between the articular surfaces, the radiographic anatomy of the acetabulum and the distribution of the contrast medium were yielded by stereoradiography. Closed reduction was usually accomplished successfully during the arthrography, which made beginning of definitive treatment under the same anaesthesia possible. (Auth.)

220

The Capsule’s Contribution to Total Hip Construct Stability – A Finite Element Analysis  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Instability is a significant concern in total hip arthroplasty, particularly when there is structural compromise of the capsule due to pre-existing pathology or due to necessities of surgical approach. An experimentally grounded fiber-direction-based finite element model of the hip capsule was developed, and was integrated with an established three-dimensional model of impingement/dislocation. Model validity was established by close similarity to results from a cadaveric experiment in a servo...

Elkins, Jacob M.; Stroud, Nicholas J.; Rudert, M. James; Tochigi, Yuki; Pedersen, Douglas R.; Ellis, Benjamin J.; Callaghan, John J.; Weiss, Jeffrey A.; Brown, Thomas D.

2011-01-01

 
 
 
 
221

Are abductor muscle quality and previous revision surgery predictors of constrained liner failure in hip arthroplasty?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Dislocation is one of the most common complications of total hip arthroplasty. The use of constrained liners is an option for the management of chronic hip instability, typically used after other methods have failed. The purposes of this study were to evaluate the overall clinical outcomes and failure rates of a tripolar constrained liner design, to assess the radiographic outcomes of its use, and to examine whether various factors such as abductor mechanism quality and history of previous re...

Zywiel, Michael G.; Mustafa, Loi’y H.; Bonutti, Peter M.; Mont, Michael A.

2010-01-01

222

Effective dislocation lines in continuously dislocated crystals. III. Kinematics  

Digital Repository Infrastructure Vision for European Research (DRIVER)

A class of congruences of principal Volterra-type effective dislocation lines associated with a dislocation density tensor is distinguished in order to investigate the kinematics of continuized defective crystals in terms of their dislocation densities (tensorial as well as scalar). Moreover, it shown, basing oneself on a formula defining the mean curvature of glide surfaces for principal edge effective dislocation lines, that the considered kinematics of continuized defecti...

Trzesowski, Andrzej

2007-01-01

223

THERAPEUTIC STRATEGY IN THE REHABILITATION OF THE DYSPLASTIC HIP THROUGH ARTHROPLASTY  

Directory of Open Access Journals (Sweden)

Full Text Available Total hip arthroplasty in degenerative pathology secondary to congenital dysplasia differentiates itself amongtotal arthroplasties by the frequent technical difficulties it poses and the site where it is performed. The existence of aform of congenital dysplasia that remained untreated or insufficiently treated in childhood leads to irreversibledeformities in adulthood. Partial or total loss of joint congruence causes, in time, degenerative changes with theimpairment of hip mobility and is associated with a number of progressive deformations (limb length discrepancy,abnormal rotation, asymmetric lesions, periarticular muscle failure, which gradually reduce the quality of the patient’slife. This study aims at investigating the incidence of prosthetic hip arthroplasty for osteoarthritis secondary todysplastic hip in the total number of arthroplasties, the age when surgery is performed, the type of deformity andprosthetic components used, and the postoperative and long-term functional results. The study was conducted on 110patients who received total hip arthroplasty due to osteoarthritis secondary to hip dysplasia, between 1994 and 2011, inthe Orthopaedics Trauma Department of the Rehabilitation Hospital of Iasi, the incidence being of 3.34% of the totalnumber of arthroplasties, with a prevalence of 65% under the age of 50 years. The functional results were assessed,according to the Harris-hip-score parameters, as good or very good in proportion of 82%. The complexity of the areawhere the total hip arthroplasty is performed requires a good management consisting of thorough preoperativeplanning, determining the operatory indication, and specialized and individualized medical recovery.

Liliana SAVIN

2012-07-01

224

Nature of Dislocations in Silicon  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Interaction between two partial 90 degrees edge dislocations is studied with atomic-scale simulations using the effective-medium tight-binding method. A large separation between the two dislocations (up to 30 Angstrom), comparable to experimental values, is achieved with a solution of the tight-binding Hamiltonian that scales linearly with the number of atoms. The partial edge dislocation is found to be very accurately described by the Peierls-Nabarro dislocation model, with generalized stack...

Hansen, Lars Bruno; Stokbro, Kurt; Lundqvist, Bengt; Jacobsen, Karsten Wedel; Deaven, D. M.

2009-01-01

225

Calculations of dislocation pipe diffusion  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Experimental diffusion profiles have been analyzed by a complete solution of the pipe diffusion equations, using two fitting parameters, pipe diffusivity D' and dislocation pipe radius a. The pipe diffusivity D' agrees well with values obtained by other authors. The pipe radius often turns out very large due to the inaccuracy of the experimental dislocation density. However, the area of high concentration along the dislocation is not confined to the dislocation core, but depends on the diffus...

Mimkes, J.

2009-01-01

226

Dislocations Jam At Any Density  

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Crystalline materials deform in an intermittent way via dislocation-slip avalanches. Below a critical stress, the dislocations are jammed within their glide plane due to long-range elastic interactions and the material exhibits plastic response, while above this critical stress the dislocations are mobile (the unjammed phase) and the material fails. We use dislocation dynamics and scaling arguments in two dimensions to show that the critical stress grows with the square root...

Tsekenis, Georgios; Goldenfeld, Nigel; Dahmen, Karin A.

2010-01-01

227

Dual-mobility acetabular components in total hip arthroplasty.  

Science.gov (United States)

With dislocation being one of the most serious complications of total hip arthroplasty, prevention of recurrent instability has been the driving force behind several implant designs, including large-diameter heads, metal-on-metal bearing surfaces, and constrained acetabular components. Dual-articulation acetabular component design was similarly conceived in an effort to reduce postoperative dislocation risk. This design, developed in France in 1975 and popularized in Europe, was recently approved in the United States and represents a new surgical option for United States orthopedic surgeons performing total hip arthroplasty. In this article, we review the dual-articulation design in terms of its history, biomechanical concepts, published indications, contraindications, outcomes, and complications based on more than 20 years of largely French clinical experience. PMID:24278908

McArthur, Benjamin A; Nam, Denis; Cross, Michael B; Westrich, Geoffrey H; Sculco, Thomas P

2013-10-01

228

Behavior of dislocations in silicon  

Energy Technology Data Exchange (ETDEWEB)

A review is given of dynamic behavior of dislocations in silicon on the basis of works of the author`s group. Topics taken up are generation, motion and multiplication of dislocations as affected by oxygen impurities and immobilization of dislocations due to impurity reaction.

Sumino, Koji [Nippon Steel Corp., Chiba Prefecture (Japan)

1995-08-01

229

Neglected irreducible posterolateral knee dislocation  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Knee dislocations are rare injuries. Posterolateral knee dislocations are only a small subset of them. There is a paucity of literature regarding the management of such neglected cases. We report here, a case of neglected irreducible posterolateral knee dislocation treated with open reduction and isolated posterior cruciate ligament reconstruction followed by gradual rehabilitation with good outcome at 3 years followup.

Saini Raghav; Mootha Aditya; Goni Vijay; Dhillon Mandeep

2010-01-01

230

Neglected irreducible posterolateral knee dislocation  

Directory of Open Access Journals (Sweden)

Full Text Available Knee dislocations are rare injuries. Posterolateral knee dislocations are only a small subset of them. There is a paucity of literature regarding the management of such neglected cases. We report here, a case of neglected irreducible posterolateral knee dislocation treated with open reduction and isolated posterior cruciate ligament reconstruction followed by gradual rehabilitation with good outcome at 3 years followup.

Saini Raghav

2010-01-01

231

Congenital Hypomyelinating Neuropathy (CHN)  

Science.gov (United States)

... MDA Search form Search Charcot-Marie-Tooth Disease (CMT) Congenital Hypomyelinating Neuropathy (CHN) What is Congenital Hypomyelinating ... is a subtype of Charcot-Marie-Tooth disease (CMT), a genetic, neurological disorder that causes damage to ...

232

Congenital heart disease  

Science.gov (United States)

Congenital heart disease is a problem with the heart's structure and function that is present at birth. ... Congenital heart disease (CHD) can describe a number of different problems affecting the heart. It is the most common ...

233

Congenital Heart Information Network  

Science.gov (United States)

... heart defects. Important Notice The Congenital Heart Information Network website is temporarily out of service. Please join ... and Uwe Baemayr for The Congenital Heart Information Network Exempt organization under Section 501(c)3. Copyright © ...

234

Congenital Heart Defects  

Science.gov (United States)

... congenital heart defects. Rate This Content: Next >> Featured Video New pediatric imaging facility aims to improve treatment for congenital heart disease 10/14/2014 Google+ Hangout on the first ...

235

Effective dislocation lines in continuously dislocated crystals. III. Kinematics  

CERN Document Server

A class of congruences of principal Volterra-type effective dislocation lines associated with a dislocation density tensor is distinguished in order to investigate the kinematics of continuized defective crystals in terms of their dislocation densities (tensorial as well as scalar). Moreover, it shown, basing oneself on a formula defining the mean curvature of glide surfaces for principal edge effective dislocation lines, that the considered kinematics of continuized defective crystals is consistent with some relations appearing in the physical theory of plasticity (e.g. with the Orowan-type kinematic relations and with the treatment of shear stresses as driving stresses of moving dislocations).

Trzesowski, Andrzej

2007-01-01

236

Adult Congenital Heart Disease  

Digital Repository Infrastructure Vision for European Research (DRIVER)

One million people over the age of 20 suffer from congenital heart disease in the United States. These adult patients can slip through the cracks of our medical system; many are too old to be cared for in most pediatric institutions by pediatric cardiologists and, unfortunately, most adult cardiologists are not trained in congenital heart disease. Therefore, it is important to identify the common lesions in adult congenital heart disease and how they should be managed. Acyanotic congenital he...

Morphet, John Am

2002-01-01

237

Can pelvic tilting be ignored in total hip arthroplasty?  

Directory of Open Access Journals (Sweden)

CONCLUSION: The sagittal position of pelvis is a key factor in impingement and dislocation after total hip arthroplasty. Pelvic tilting affects the position of acetabular component in the sagittal plane of the body as compared with its anatomic position in the pelvis. We suggest a preoperative lateral view of spine-pelvis, in upright and supine position for evaluation of a corrective adaptation of the acetabular cup accordingly with pelvic balance.

Won Yong Shon

2014-01-01

238

Congenital Intrahepatic Portosystemic Shunts  

International Nuclear Information System (INIS)

Intrahepatic portosystemic shunts are an anomalous connection between the portal vein and hepatic vein/IVC, which may be either congenital or acquired secondary to liver cirrhosis or portal hypertension. Cases of congenital intrahepatic shunts are usually encountered in children and may spontaneously resolve. We report 5 cases of congenital intrahepatic portosystemic shunts in neonates and an adult

239

Total Hip Replacement Learning Module  

Science.gov (United States)

... tutorial Print this section only Sections Introduction Your Hip Causes of Hip Pain Symptoms Diagnosis Nonsurgical Treatment Surgical Treatment Your ... Complications Conclusion Exit This Module Informed Patient - Total Hip Replacement Help Introduction Welcome to the American Academy ...

240

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... pinch together. Otherwise known as hip impingement, this form of hip pain is increasingly being recognized as ... that may lead in a later stage in life to having a destroyed hip and needing a ...

 
 
 
 
241

[Is a dorsal access associated with an elevated luxation rate following total hip replacement?].  

Science.gov (United States)

The use of the dorsal approach to the hip joint for insertion of an endoprosthesis is associated with a dislocation rate of 1-7%, which is higher than comparable operations using an anterolateral approach. In recent years an enhanced dorsal capsular reconstruction technique has been recommended with increasing frequency. This has reduced the likelihood of dislocation to 0-3%. Controlled studies comparing the dorsal approaches with and without soft tissue reconstruction have documented significantly better results after soft tissue reconstruction, with a probability of 0-3% for dislocation. In order to understand the dorsal instability of the hip joint following implantation of an endoprosthesis, we describe the pathophysiology and the possible reasons for dislocation. Many factors, such as cup position, length of the neck of the femoral implant, diameter of the implant head, the condition of the dorsal soft tissues and the patient's general condition, influence the outcome of the operation and the frequency of dislocation. Possible ways for preventing posterior dislocation are described with reference to both surgical technique and patient selection. The current range of surgical treatment options for recurrent dislocation are presented: modular cups, dual-head cups, constrained cups, high offset femoral neck and soft tissue interventions. PMID:17891376

Kerschbaumer, F; Kerschbaumer, G; Deghani, F

2007-10-01

242

Primary abductor hip contracture as diagnostic, prognostic and therapeutic problem in child hip pathology  

Directory of Open Access Journals (Sweden)

Full Text Available Coxa obliqua represents a special functional entity in the pathology of the child hip. Authors have confirmed the results of S.L. Weissman and B. Strinovic which claimed that the abductor contracture of the hip was a primary congenital condition that developed as a result of intrauterine malposition, leading later to the contralateral adductor contracture. Critical period for the development of complications was between 6 and 8 month after birth, adductor contracture might keep persisting together with the development of acetabular dysplasia, and later on with ipsilateral subluxation. This malformation has usually been diagnosed within 3 and 6 months of age. It could be connected with some other signs of malposition, such as plagiocephaly, torticollis or infantile thoracic C scoliosis. For the diagnosis of coxa obliqua, the examination of hips in the prone position was very important and the ultrasonic and radiological examinations were crucial. The applied treatment used to be exclusively physical rehabilitation. Wide diapering has been contraindicated. In this study, we included 2,500 newborns, 1,300 boys and 1,200 girls (5,000 hips. In 22 cases of coxa obliqua (10‰, the excellent results were obtained in 96% of cases. In two unsuccessfully treated cases, a contralateral dysplasia developed, and in one untreated, subluxation. The authors are advocating a systematic and early detection and treatment of the primary coxa obliqua. .

Paji? Miloš

2007-01-01

243

Intra-articular deformities of the knee in congenital hypoplasias of the lower limb: an arthroscopic study.  

Science.gov (United States)

A knowledge of the morphology of the cruciate ligaments in congenital hypoplasias of the lower limb, susceptible to treatment to even the length discrepancy, is of practical importance in the prevention of subdislocation and dislocation of the knee during the distraction phase of femoral and/or tibial lengthening. The authors report their experience with 20 arthroscopies diagnosed in 20 children affected with congenital hypoplasia of the lower limb (shoft congenital femur, longitudinal peroneal hemimelia) performed prior to assembling the Ilizarov external fixator for femoral and/or tibial lengthening. None of the patients had congenital dislocation of the knee or knee with recurvation. In the patients in our study, it is possible to demonstrate that the anatomical cause of instability of the knee in congenital hypoplasias of the lower limb may be constituted by aplasia of one or both cruciate ligaments. PMID:11569001

Di Gennaro, G L; Stilli, S; Donzelli, O; Marchiodi, L; Valdiserri, L

1999-01-01

244

Effective dislocation lines in continuously dislocated crystals. I. Material anholonomity  

CERN Document Server

A continuous geometric description of Bravais monocrystals with many dislocations and secondary point defects created by the distribution of these dislocations is proposed. Namely, it is distinguished, basing oneself on Kondo and Kroner Gedanken Experiments for dislocated bodies, an anholonomic triad of linearly independent vector fields. The triad defines local crystallographic directions of the defective crystal as well as a continuous counterpart of the Burgers vector for single dislocations. Next, the influence of secondary point defects on the distribution of many dislocations is modeled by treating these local crystallographic directions as well as Burgers circuits as those located in such a Riemannian material space that becomes an Euclidean 3-manifold when dislocations are absent. Some consequences of this approach are discussed.

Trzesowski, Andrzej

2007-01-01

245

Taper Hip Prosthesis  

Medline Plus

Full Text Available Zimmer M/L Taper Hip Prosthesis with Modular Neck Kinectiv® Technology March 12, 2009 7:00 PM EDT Welcome to this "OR Live" Webcast presentation ... an "OR Live" Webcast on the Kinectiv Total Hip System. At this time, let’s join Dr. Maltry ...

246

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... also look at the hip often while using heat to make sure you are not burning the skin! Do’s & Don’ts This section shows what you should and should NOT do, especially in the first few months after your surgery. This is specific to a traditional hip replacement surgery. If you ...

247

Hip arthroplasty for ochronosis.  

Directory of Open Access Journals (Sweden)

Alkaptonuria is a metabolic disorder in which homogentisic acid oxidase is absent. Therefore, homogentisic acid accumulates in cartilage and connective tissues. We can diagnose ochronotic arthropathy, a manifestation of long standing alkaptonuria, through careful radiological, physical, and laboratory examination. In this report, we describe 4 cases of ochronotic arthropathy to which we applied cementless total hip prosthesis due to severe hip involvement.

Servet Kerimoglu

2005-11-01

248

Ipsilateral Fracture Shaft Femur with Neglected Dislocation of Prosthesis: A Case Report  

Directory of Open Access Journals (Sweden)

Full Text Available Introduction: Neglected hip dislocation is rare in today’s world and after prosthesis replacement even rarer finding. However such patients may not report to surgeons until they develop secondary complications. Management of such patient’s is a challenge to the treating surgeon and need to be tailored suiting to patient’s demands, expectations and constraints of financial resources. We did not find a similar case in the electronic and print media and therefore report this case which was innovatively managed. Case Report: A 60 year farmer presented with fracture shaft femur and ipsilateral dislocation prosthesis of right hip. He had a hemiarthroplasty done for fracture neck of femur in the past but used to walk with a lurch since he started to ambulate after discharge. However he was satisfied despite “some problems” which had caused shortening of his limb. The patient was informed of the various treatment options and their possible complications. He expressed his inability to afford a Total Hip Arthroplasty (THA at any stage and consented for other options discussed with him. The patient was positioned supine and adductor tenotomy done. Next he was positioned laterally and the fracture was fixed with heavy duty broad dynamic compression plate and screws. The wound was temporarily closed. Now through the previous scar via posterior approach the hip was exposed. The prosthesis was found to be firmly fixed to the proximal femur. The acetabulum was cleared with fibrous tissue. All attempts the prosthesis to relocate the prosthesis failed after several attempts and it was best decided to leave alone. Post operatively period was uneventful. At follow up he refused for any further manoeuvre in future inform of heavy traction and attempts to reduce the same. At one year when he was walking unaided and his X-rays showed that fracture had well united his SF-36 score was PCS – 49.6 and MCS – 51.9. Conclusion: Ipsilateral shaft femur fracture in chronically dislocated prosthesis, done for fracture neck of femur is a rare clinical entity. Increased stress transfers due to dislocation compounded with osteoporosis makes the shaft vulnerable to fracture even with low velocity injury as in our case. Though fixation of fracture shaft femur is clear and straightforward; management of neglected prosthesis dislocation have to be guided by patient’s level of expectations and subjective contentment to adaptation to the altered hip state which influence the overall functional outcome. Keywords: Neglected dislocation, ipsilateral femoral fracture, hip arthroplasty.

Mantu Jain

2013-10-01

249

Comparison between 28 mm and 32 mm ceramic-on-ceramic bearings in total hip replacement.  

Science.gov (United States)

Large femoral heads have become popular in total hip replacement (THR) as a method of reducing the risk of dislocation. However, if large heads are used in ceramic-on-ceramic THR, the liner must be thinner, which may increase the risk of fracture. To compare the rates of ceramic fracture and dislocation between 28 mm and 32 mm ceramic heads, 120 hips in 109 patients (51 men and 58 women, mean age 49.2 years) were randomised to THR with either a 28 mm or a 32 mm ceramic articulation. A total of 57/60 hips assigned to the 28 mm group and 55/60 hips assigned to the 32 mm group were followed for at least five years. No ceramic component fractures occured in any patient in either group. There was one dislocation in the 32 mm group and none in the 28 mm group (p = 0.464). No hip had detectable wear, focal osteolysis or prosthetic loosening. In our small study the 32 mm ceramic articulation appeared to be safe in terms of ceramic liner fracture. PMID:25371457

Lee, Y K; Ha, Y C; Koo, K H

2014-11-01

250

Painful hip arthroplasty: definition.  

Science.gov (United States)

Total hip arthroplasty (THA) has been indicated as the surgical intervention with greatest improvement in pain and physical function. However some patients continue to experience hip pain after elective surgery. We investigate prognostic factors that negatively affect treatment effectiveness and the patient outcome. The "hip region" constitutes the groin, buttock, upper lateral thigh, greater trochanteric area, and the iliac crest. Pain originating from various sources and not directly linked to prosthesis may be perceived here and includes the lumbosacral spine, referred pain from abdominal organs and soft tissue sources such as trochanteric bursitis, tendinitis, hip abductor dysfunction, and inguinal hernia. An accurate assessment of the pain cause is extremely difficult to construct and a complete differential diagnosis is fundamental. We assess all the possible causes of hip pain after THA and we divide them depending on the presence or absence of radiographic signs. PMID:22461810

Ferrata, Paolo; Carta, Serafino; Fortina, Mattia; Scipio, Daniele; Riva, Alberto; Di Giacinto, Salvatore

2011-05-01

251

Preventing fractures with hip protectors.  

Science.gov (United States)

Hip protectors are an effective strategy for reducing fall-related hip fractures in long-term care settings. The success of a hip protector program is enhanced by educational activities and administrative support, and a nurse champion to assume responsibility for the hip protector program. PMID:19343862

Tideiksaar, Rein

2007-01-01

252

Conductivity and Photoconductivity at Dislocations  

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The general features of one-dimensional states at dislocations, including those that are bound in the electrostatic field of trapped charges, are discussed. An overview of the available evidence for the existence or nonexistence of one-dimensional conduction in these states is given. Photoconductivity measurements along dislocations and from the dislocation core to the bulk are presented and discussed in some detail. The analysis of the results leads to a revision of some old concepts in disl...

Labusch, R.

1997-01-01

253

Bilateral anterior glenohumeral fracture dislocation  

Scientific Electronic Library Online (English)

Full Text Available SciELO South Africa | Language: English Abstract in english Bilateral anterior dislocation of the glenohumeral (shoulder) joint is uncommon. Incidences of bilateral anterior fracture dislocation of the shoulder are relatively rare. About 16 cases are reported in the world literature. We report a case of bilateral anterior dislocation of the shoulder with bil [...] ateral avulsion fractures of the greater tuberosities of the humerus following seizure or convulsion due to electric shock.

MS, Moloto; BE, Mungulu; SS, Golele.

254

Irradiation induced dislocation climb sources  

International Nuclear Information System (INIS)

The formation of dislocation loops at apparently random positions during electron irradiation has been observed many times in a variety of materials. In Cu-Ni alloys loops may form at random, but under certain conditions loops are continually nucleated at specific points, i.e. at dislocation climb sources. In situ observations of the operation of these dislocation climb sources and the loops emitted during electron irradiation in a high voltage electron microscope are reported

255

Design rules for dislocation filters  

Science.gov (United States)

The efficacy of strained layer threading dislocation filter structures in single crystal epitaxial layers is evaluated using numerical modeling for (001) face-centred cubic materials, such as GaAs or Si1-xGex, and (0001) hexagonal materials such as GaN. We find that threading dislocation densities decay exponentially as a function of the strain relieved, irrespective of the fraction of threading dislocations that are mobile. Reactions between threading dislocations tend to produce a population that is a balanced mixture of mobile and sessile in (001) cubic materials. In contrast, mobile threading dislocations tend to be lost very rapidly in (0001) GaN, often with little or no reduction in the immobile dislocation density. The capture radius for threading dislocation interactions is estimated to be approximately 40 nm using cross section transmission electron microscopy of dislocation filtering structures in GaAs monolithically grown on Si. We find that the minimum threading dislocation density that can be obtained in any given structure is likely to be limited by kinetic effects to approximately 104-105 cm-2.

Ward, T.; Sánchez, A. M.; Tang, M.; Wu, J.; Liu, H.; Dunstan, D. J.; Beanland, R.

2014-08-01

256

Screening for congenital hypothyroidism.  

Directory of Open Access Journals (Sweden)

The screening program based on initial measurement of thyroid stimulating hormone in cord blood captures 97% of infants born in the Riyadh Al-Kharj Hospital Programme. The incidence of congenital hypothyroidism was 1:2759 live births with a female:male ratio of nearly 2:1. Congenital hypothyroidism infants had similar neonatal parameters as other infants. No seasonality in the incidence of congenital hypothyroidism was observed. In general, affected infants were started on thyroxine very soon after birth.

Gerard Henry

2002-05-01

257

Congenital right hemidiaphragmatic agenesis  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Congenital diaphragmatic hernia is a congenital defect of the diaphragm through which intestine and other viscera herniate into the chest. In extreme form of diaphragmatic maldevelopment, there might be a complete agenesis of diaphragm. A 45-day old male infant was presented with fever, cough and respiratory distress for a week. Chest radiograph showed right-sided congenital diaphragmatic hernia. The patient underwent surgical exploration and found to have an unusual and large defect of right...

Mirza, Bilal; Bashir, Zahid; Sheikh, Afzal

2012-01-01

258

Congenital lung lesions.  

Science.gov (United States)

Confusion, controversy, and uncertainty are all terms applicable to the diagnosis and management of congenital lung lesions both prenatally and postnatally. This review examines the current status of fetal diagnosis and treatment of these lesions; reviews the various classifications, including congenital cystic adenomatoid malformation/congenital pulmonary airway malformation, sequestrations, variants and hybrid lesions; discusses the risk of malignant transformation or misdiagnosis with pleuropulmonary blastoma; presents the arguments in favor and against resection of asymptomatic lesions, the timing of such resection, and the long-term pulmonary function after resection; and reviews the experience with thoracoscopic resection of congenital lung lesions. PMID:22682383

Puligandla, Pramod S; Laberge, Jean-Martin

2012-06-01

259

Transient osteoporosis of the hip  

International Nuclear Information System (INIS)

Transient osteoporosis of the hip is an uncommon cause of hip pain, mostly affecting healthy middle-aged men and also women in the third trimester of pregnancy. We present a case of transient osteoporosis of the hip in a 33-year-old non-pregnant female patient. This case highlights the importance of considering a diagnosis of transient osteoporosis of the hip in patients who present with hip pain. (author)

260

Magnetic resonance imaging of labral cysts of the hip  

Energy Technology Data Exchange (ETDEWEB)

Objective. To present the magnetic resonance (MR) imaging findings in patients with labral cysts adjacent to the acetabulum and to examine their association with hip pathology. Design. MR images and conventional radiographs of seven patients with paralabral cysts were retrospectively reviewed by three musculoskeletal radiologists. Patients. The patients included three men and four women with hip pain, ranging in age from 29 to 82 years. Two patients had developmental dysplasia of the hip and six had a history of remote trauma/dislocation. Clinical history and follow-up were obtained in all patients. Surgery was performed on one patient. Results and conclusions. Paralabral cysts were located in the posterosuperior aspect of the hip joint in five patients and in the anterior aspect in two patients. A tear of the adjacent acetabular labrum was confirmed surgically in one patient, and in all patients the MR features suggested the presence of an abnormal labrum. Osteoarthritis was observed in three patients and there was associated subchondral cyst formation in the acetabulum adjacent to the cyst in three patients. The paralabral cyst of the hip is well visualized on MR imaging and is seen in patients with a predisposition to labral pathology. (orig.). With 3 figs., 1 tab.

Schnarkowski, P. [Department of Radiology, University of California, San Francisco, CA (United States)]|[Department of Radiology, Ludwig-Maximilians-University, Munich (Germany); Steinbach, L.S. [Department of Radiology, University of California, San Francisco, CA (United States); Tirman, P.F.J. [Department of Radiology, University of California, San Francisco, CA (United States)]|[San Francisco Magnetic Resonance Center, San Francisco, CA (United States); Peterfy, C.G. [Department of Radiology, University of California, San Francisco, CA (United States); Genant, H.K. [Department of Radiology, University of California, San Francisco, CA (United States)

1996-11-01

 
 
 
 
261

Magnetic resonance imaging of labral cysts of the hip  

International Nuclear Information System (INIS)

Objective. To present the magnetic resonance (MR) imaging findings in patients with labral cysts adjacent to the acetabulum and to examine their association with hip pathology. Design. MR images and conventional radiographs of seven patients with paralabral cysts were retrospectively reviewed by three musculoskeletal radiologists. Patients. The patients included three men and four women with hip pain, ranging in age from 29 to 82 years. Two patients had developmental dysplasia of the hip and six had a history of remote trauma/dislocation. Clinical history and follow-up were obtained in all patients. Surgery was performed on one patient. Results and conclusions. Paralabral cysts were located in the posterosuperior aspect of the hip joint in five patients and in the anterior aspect in two patients. A tear of the adjacent acetabular labrum was confirmed surgically in one patient, and in all patients the MR features suggested the presence of an abnormal labrum. Osteoarthritis was observed in three patients and there was associated subchondral cyst formation in the acetabulum adjacent to the cyst in three patients. The paralabral cyst of the hip is well visualized on MR imaging and is seen in patients with a predisposition to labral pathology. (orig.). With 3 figs., 1 tab

262

Metal-on-metal hip resurfacings. A radiological perspective  

International Nuclear Information System (INIS)

It is important to be aware of the various complications related to resurfacing arthroplasty of the hip (RSA) and the spectrum of findings that may be encountered on imaging. The bone conserving metal-on-metal (MOM) hip resurfacing has become increasingly popular over the last ten years, especially in young and active patients. Initial reports have been encouraging, but long-term outcome is still unknown. Early post operative complications are rare and have been well documented in the literature. Medium and long term complications are less well understood. A rare but important problem seen at this stage is the appearance of a cystic or solid periarticular reactive mass, which occurs predominately in women and usually affects both hips when seen in patients with bilateral RSAs. The following imaging findings are illustrated and their significance discussed; Uncomplicated hip resurfacing arthroplasty, radiolucency around the femoral peg, femoral neck fracture, loosening and infection, suboptimal component position, femoral notching, dislocation, heterotopic ossification, femoral neck thinning and reactive masses. The radiologist should be aware of the normal radiographic appearances and the variety of complications that may occur following RSA and should recommend ultrasound or MRI in patients with an unexplained symptomatic hip and normal radiographs. (orig.)

263

The value of the adductor tenotomy with obturator neurectomy in the treatment of the hips at cerebral palsy children. Early clinical and radiological examination results.  

Science.gov (United States)

Hereby paper presents our own experiences and results of adductor tenotomy with obturator neurectomy at 33 spastic hips in 21 cerebral palsy children. In the case of six children the purpose of the study was the reposition of unstable hips and in other children the dislocation prophylactics. All children presented stable improvement of hips abduction and easier joint movement. In the case of four children the maintaining of the reposition was not obtained. After the average time of observation equaled 11 months the improvement of femoral head migration index in ten out of sixteen hip joints was perceived. PMID:17679893

Snela, S?awomir; Rydzak, Bogus?aw

2002-01-31

264

Head-shaft angle is a risk factor for hip displacement in children with cerebral palsy.  

Science.gov (United States)

Background and purpose - Hip dislocation in children with cerebral palsy (CP) is a common and severe problem. The Swedish follow-up program for CP (CPUP) includes standardized monitoring of the hips. Migration percentage (MP) is a widely accepted measure of hip displacement. Coxa valga and valgus of the femoral head in relation to the femoral neck can be measured as the head-shaft angle (HSA). We assessed HSA as a risk factor for hip displacement in CP. Patients and methods - We analyzed radiographs of children within CPUP from selected regions of Sweden. Inclusion criteria were children with Gross Motor Function Classification System (GMFCS) levels III-V, MP of development of MP > 40% of either hip within 5 years. Risk ratio between children who differed in HSA by 1 degree was calculated and corrected for age, MP, and GMFCS level using multiple Poisson regression. Results - 145 children (73 boys) with a mean age of 3.5 (0.6-9.7) years at the initial radiograph were included. 51 children developed hip displacement whereas 94 children maintained a MP of children of the same age, GMFCS level, and MP, a 10-degree difference in HSA results in a 1.6-times higher risk of hip displacement in the child with the higher HSA. Interpretation - A high HSA appears to be a risk factor for hip displacement in children with CP. PMID:25428756

Hermanson, Maria; Hägglund, Gunnar; Riad, Jacques; Wagner, Philippe

2014-11-27

265

Surgical management of the problematic hip in adolescent and young adult patients.  

Science.gov (United States)

Surgical management of the problematic hip in adolescent and young adult patients can be challenging. In many of these patients, hip arthrosis and pain occur secondary to hip dysplasia associated with chronic instability, whether the result of prior treatment or chronic unmanaged acetabular dysplasia. Surgical techniques such as the Bernese periacetabular osteotomy are performed to correct acetabular deficiency, restore hip joint stability, and eliminate pain. Patients with previous Legg-Calvé-Perthes disease or slipped capital femoral epiphysis frequently note onset of symptomatic hip arthrosis and pain in adolescence or young adulthood. Pain occurs secondary to pathologic impingement of the deformed proximal femur against the anterolateral acetabulum (ie, femoroacetabular impingement). The recent successful innovation of the transtrochanteric surgical hip dislocation approach provides complete access to the hip and offers the potential for comprehensive correction of both the often severe proximal femoral deformity and associated labral chondral disease secondary to Legg-Calvé-Perthes disease and slipped capital femoral epiphysis. Restoration of more normal proximal femoral morphology results in marked improvement in functional outcome. Effective orthopaedic management requires an understanding of the mechanisms of hip disease as well as surgical expertise. PMID:21536627

Schoenecker, Perry L; Clohisy, John C; Millis, Michael B; Wenger, Dennis R

2011-05-01

266

The creation of misfit dislocations  

International Nuclear Information System (INIS)

This paper reports on growth onto vicinal substrates which cause 60 degrees misfit dislocations to adopt line directions away from left-angle 110 right-angle in order for them to maintain their presence within the substrate to strained layer interface. Observations show that for the growth of an on-axis [001] wafer the dislocations have a line direction, within measurement error, exactly [110] or [-110] and two sets of orthogonal dislocations are generated. When grown onto a wafer that is cut off-axis toward [010] four sets of dislocations are generated. The two sets of dislocations in each direction converge to form low angle intersections from which edge dislocations are formed. These edge dislocations can become very long by the glide out of the interface plane of the component 60 degrees dislocations. This zipping-up to form the edge components only occurs in one direction from the low angle point of intersection and the edge segments are exclusively generated in the buffer layer

267

Large head metal-on-metal cementless total hip arthroplasty versus 28mm metal-on-polyethylene cementless total hip arthroplasty: design of a randomized controlled trial  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Osteoarthritis of the hip is successfully treated by total hip arthroplasty with metal-on-polyethylene articulation. Polyethylene wear debris can however lead to osteolysis, aseptic loosening and failure of the implant. Large head metal-on-metal total hip arthroplasty may overcome polyethylene wear induced prosthetic failure, but can increase systemic cobalt and chromium ion concentrations. The objective of this study is to compare two cementless total hip arthroplasties: a conventional 28 mm metal-on-polyethylene articulation and a large head metal-on-metal articulation. We hypothesize that the latter arthroplasties show less bone density loss and higher serum metal ion concentrations. We expect equal functional scores, greater range of motion, fewer dislocations, fewer periprosthetic radiolucencies and increased prosthetic survival with the metal-on-metal articulation. Methods A randomized controlled trial will be conducted. Patients to be included suffer from non-inflammatory degenerative joint disease of the hip, are aged between 18 and 80 and are admitted for primary cementless unilateral total hip arthroplasty. Patients in the metal-on-metal group will receive a cementless titanium alloy acetabular component with a cobalt-chromium liner and a cobalt-chromium femoral head varying from 38 to 60 mm. Patients in the metal-on-polyethylene group will receive a cementless titanium alloy acetabular component with a polyethylene liner and a 28 mm cobalt-chromium femoral head. We will assess acetabular bone mineral density by dual energy x-ray absorptiometry (DEXA, serum ion concentrations of cobalt, chromium and titanium, self reported functional status (Oxford hip score, physician reported functional status and range of motion (Harris hip score, number of dislocations and prosthetic survival. Measurements will take place preoperatively, perioperatively, and postoperatively (6 weeks, 1 year, 5 years and 10 years. Discussion Superior results of large head metal-on-metal total hip arthroplasty over conventional hip arthroplasty have been put forward by experts, case series and the industry, but to our knowledge there is no randomized controlled evidence. Conclusion This randomized controlled study has been designed to test whether large head metal-on-metal cementless total hip arthroplasty leads to less periprosthetic bone density loss and higher serum metal ion concentrations compared to 28 mm metal-on-polyethylene cementless total hip arthroplasty. Trial registration Netherlands Trial Registry NTR1399

van Raaij Jos JAM

2008-10-01

268

Dislocation Mechanics Under Extreme Pressures  

Science.gov (United States)

The shock-induced plasticity of copper, Armco iron, and tantalum materials is attributed to strain rate control by a substantial dislocation density being generated at the shock front. A thermal activation type constitutive equation is employed for the dislocation generation based on achievement of a limiting small activation volume for the process. A linear dependence of the equivalent compressive stress on logarithm of the plastic strain rate is predicted. The prediction compares favorably with Swegle-Grady and Meyers measurements previously fitted to a power law relationship. For Armco iron and tantalum, control is matched with a dislocation description of deformation twinning at the shock front. By comparison, the uniform shock-less loading in an isentropic compression experiment (ICE) provides for plastic strain rate control by the drag-resisted movement of mobile dislocations within the resident dislocation density.

Armstrong, Ronald; Arnold, Werner; Zerilli, Frank

2007-06-01

269

Torcicolo congênito: avaliação de dois tratamentos fisioterapêuticos Congenital torticollis: evaluation of two physiotherapeutic approaches  

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Full Text Available OBJETIVO: Avaliar a evolução clínica e comparar a eficácia do tratamento fisioterapêutico intensivo ou mínimo, em neonatos e lactentes com torcicolo congênito. MÉTODOS: Foram atendidas no Ambulatório de Fisioterapia e Cirurgia Pediátrica do Hospital de Clínicas da Universidade Estadual de Campinas 47 crianças com torcicolo congênito. Analisaram-se, retrospectivamente, antecedentes maternos, neonatais, apresentação clínica e tratamento fisioterapêutico, classificado de acordo com a freqüência das sessões. O tratamento intensivo foi definido como sessões de fisioterapia realizadas pelo fisioterapeuta no ambulatório, acrescidas de exercícios diários realizados pelos pais em domicílio. O tratamento mínimo foi considerado quando apenas o fisioterapeuta realizava as sessões semanalmente no ambulatório, sem a participação dos pais. RESULTADOS: Quanto às características demográficas da população, observou-se: idade média materna=26 anos; parto normal=40 (85%; mães primigestas=35 (75%; idade média ao diagnóstico=50 dias. A presença de nódulo intramuscular foi notada em 46 (98% pacientes. As seguintes doenças estiveram associadas: luxação congênita de quadril igual=4 (8%; fratura de clavícula=2 (4%; pé torto congênito=1 (2%. O tratamento intensivo foi realizado em 34 (72% pacientes e a cura observada em 100%, após 74 dias, em média. O tratamento mínimo foi aplicado em 13 (28% pacientes e a cura observada em dez (77%, tratados em média por 130 dias. CONCLUSÕES: O torcicolo congênito apresentou evolução clínica favorável em ambos os grupos. O tratamento intensivo propiciou maior índice de cura em menor tempo de tratamento.OBJECTIVE: To evaluate the clinical course and to compare the effectiveness of physiotherapeutic treatment performed daily or once a week in newborns and infants with congenital torticollis. METHODS: 47 patients with congenital torticollis were assisted at the Physiotherapy and Pediatric Surgery Services of the Clinical Hospital of Campinas University. The following data were retrospectively collected: maternal and neonatal history, clinical presentation and physiotherapeutic treatment classified according to the frequency of the exercises. Intensive treatment was defined as sessions performed at the daycare clinic by the physiotherapist plus daily sessions performed by parents at home. Minimal treatment was defined as weekly sessions performed only by the physiotherapist at the daycare clinic, without participation of the parents. RESULTS: The demographic characteristics of the studied patients were: mean maternal age=26 years; first gestation=35 (75%; vaginal delivery=40 (85%; mean age at diagnosis =50 days. A sternomastoid nodule was felt seen in 46 (98% patients. Diseases associated with congenital torticollis were: congenital hip dislocation=4 (8%; fracture of clavicles=2 (4%; and club feet=1 (2%. Intensive treatment was performed in 34 (72% patients for an average of 74 days and the cure was achieved in 100%. Minimal treatment was performed in 13 (28% for an average of 130 days and ten (77% patients achieved cure. CONCLUSIONS: Congenital torticollis had favorable outcome in both groups. The intensive treatment was followed by higher rates of cure in smaller period of time.

Luciane Zanusso Pagnossim

2008-09-01

270

Torcicolo congênito: avaliação de dois tratamentos fisioterapêuticos / Congenital torticollis: evaluation of two physiotherapeutic approaches  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese OBJETIVO: Avaliar a evolução clínica e comparar a eficácia do tratamento fisioterapêutico intensivo ou mínimo, em neonatos e lactentes com torcicolo congênito. MÉTODOS: Foram atendidas no Ambulatório de Fisioterapia e Cirurgia Pediátrica do Hospital de Clínicas da Universidade Estadual de Campinas 4 [...] 7 crianças com torcicolo congênito. Analisaram-se, retrospectivamente, antecedentes maternos, neonatais, apresentação clínica e tratamento fisioterapêutico, classificado de acordo com a freqüência das sessões. O tratamento intensivo foi definido como sessões de fisioterapia realizadas pelo fisioterapeuta no ambulatório, acrescidas de exercícios diários realizados pelos pais em domicílio. O tratamento mínimo foi considerado quando apenas o fisioterapeuta realizava as sessões semanalmente no ambulatório, sem a participação dos pais. RESULTADOS: Quanto às características demográficas da população, observou-se: idade média materna=26 anos; parto normal=40 (85%); mães primigestas=35 (75%); idade média ao diagnóstico=50 dias. A presença de nódulo intramuscular foi notada em 46 (98%) pacientes. As seguintes doenças estiveram associadas: luxação congênita de quadril igual=4 (8%); fratura de clavícula=2 (4%); pé torto congênito=1 (2%). O tratamento intensivo foi realizado em 34 (72%) pacientes e a cura observada em 100%, após 74 dias, em média. O tratamento mínimo foi aplicado em 13 (28%) pacientes e a cura observada em dez (77%), tratados em média por 130 dias. CONCLUSÕES: O torcicolo congênito apresentou evolução clínica favorável em ambos os grupos. O tratamento intensivo propiciou maior índice de cura em menor tempo de tratamento. Abstract in english OBJECTIVE: To evaluate the clinical course and to compare the effectiveness of physiotherapeutic treatment performed daily or once a week in newborns and infants with congenital torticollis. METHODS: 47 patients with congenital torticollis were assisted at the Physiotherapy and Pediatric Surgery Ser [...] vices of the Clinical Hospital of Campinas University. The following data were retrospectively collected: maternal and neonatal history, clinical presentation and physiotherapeutic treatment classified according to the frequency of the exercises. Intensive treatment was defined as sessions performed at the daycare clinic by the physiotherapist plus daily sessions performed by parents at home. Minimal treatment was defined as weekly sessions performed only by the physiotherapist at the daycare clinic, without participation of the parents. RESULTS: The demographic characteristics of the studied patients were: mean maternal age=26 years; first gestation=35 (75%); vaginal delivery=40 (85%); mean age at diagnosis =50 days. A sternomastoid nodule was felt seen in 46 (98%) patients. Diseases associated with congenital torticollis were: congenital hip dislocation=4 (8%); fracture of clavicles=2 (4%); and club feet=1 (2%). Intensive treatment was performed in 34 (72%) patients for an average of 74 days and the cure was achieved in 100%. Minimal treatment was performed in 13 (28%) for an average of 130 days and ten (77%) patients achieved cure. CONCLUSIONS: Congenital torticollis had favorable outcome in both groups. The intensive treatment was followed by higher rates of cure in smaller period of time.

Luciane Zanusso, Pagnossim; Augusto Frederico S., Schmidt; Joaquim Murray, Bustorff-Silva; Sérgio Tadeu M., Marba; Lourenço, Sbragia.

2008-09-01

271

Congenital proximal radioulnar synostosis  

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Full Text Available Congenital proximal radio-ulnar synostosis is a rare anomaly and is often part of syndromes such as Crouzon, Apert's and Poland's. We have successfully managed one such case with bilateral involvement not associated with any other congenital deformity. He has been managed by performing derotation osteotomy through the synostosis mass with gratifying results.

Dogra B

2003-01-01

272

Congenital proximal radioulnar synostosis  

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Congenital proximal radio-ulnar synostosis is a rare anomaly and is often part of syndromes such as Crouzon, Apert's and Poland's. We have successfully managed one such case with bilateral involvement not associated with any other congenital deformity. He has been managed by performing derotation osteotomy through the synostosis mass with gratifying results.

Dogra B; Singh M; Malik A

2003-01-01

273

Congenital Hepatic Fibrosis  

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Full Text Available Congenital hepatic fibrosis (CHF is a rare disease that primarily involves hepatobiliary and renal systems. It is characterized by hepatic fibrosis, portal hypertension and renal cystic disease. We present a 22 years old man with fever, abdominal pain, icterus and hematemesis. On complete work up of the patient and liver with kidney biopsy, the diagnosis was congenital hepatic fibrosis.

MH Antikchi

2010-09-01

274

Imaging of hip arthroplasty  

International Nuclear Information System (INIS)

Hip arthroplasty has become a common and still increasing procedure for the treatment of osteoarthritis, advanced head necrosis, post-inflammatory arthritis or rheumatoid arthritis.Radiography is the most important imaging modality for monitoring the normal, asymptomatic hip arthroplasty. Radiographs are obtained at the end of a surgical treatment, to exclude complications like fracture or component misplacement. In the follow-up radiographs are used for the diagnosis of loosening and infection of the hip arthroplasty as well as soft tissue ossification. Together with the history and clinical information, the analysis of morphological findings allows to find the grade of loosening. MRI has been advocated in the diagnosis of infection, in particular in the localisation of soft tissue involvement.Imaging, especially by radiographs, is used for the evaluation of the normal and complicated follow-up of hip arthroplasty. (orig.)

275

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... together without holding your breath. Hold together for 5-10 seconds; repeat 15-20 times. Knee & Hip ... lift up the buttock and hold it for 5 seconds. Repeat 10-20 times. Quadriceps Setting While ...

276

Taper Hip Prosthesis  

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Full Text Available ... hip. And at this point we'll begin. All right, the incision starts from the superior anterior ... little better. Now John, you're doing this all bluntly with basically digital palpation? Exactly true and ...

277

Hip Conditioning Program  

Science.gov (United States)

... or her orthopaedic surgeon. Purpose of Program _________________________________________________________________ Hip Conditioning Program After an injury or surgery, an exercise ... Target Muscles: The muscle groups targeted in this conditioning program include: • Gluteus maximus (buttocks) • Gluteus medius (buttocks) • ...

278

Taper Hip Prosthesis  

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Full Text Available ... spine of the right hip. And at this point we'll begin. All right, the incision starts ... of the greater trochanter and carried to a point approximately one or two centimeters behind the ASIS, ...

279

Hip Replacement - Physical Therapy  

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Full Text Available ... first 6-8 weeks after surgery. If your surgeon has performed the surgery using a procedure called ... stiffness in the hip at first. Your orthopedic surgeon may recommend using crutches or a walker right ...

280

Taper Hip Prosthesis  

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Full Text Available ... L Taper Hip Prosthesis with Modular Neck Kinectiv® Technology March 12, 2009 7:00 PM EDT Welcome ... start rasping. These are the rasps for the new connective system. They're diamond cutting and they ...

 
 
 
 
281

Taper Hip Prosthesis  

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Full Text Available ... going to be the minimally invasive anterial lateral approach to the right hip in this gentleman. We' ... wasn’t able to get on my initial approach to begin to orient -- this is the dorsal ...

282

Hip Replacement - Physical Therapy  

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Full Text Available ... and stiffness in the hip at first. Your orthopedic surgeon may recommend using crutches or a walker ... professional for your specific condition. ©1995-2010, The Patient Education Institute, Inc. www.X-Plain.com pt030105 ...

283

Taper Hip Prosthesis  

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Full Text Available Zimmer M/L Taper Hip Prosthesis with Modular Neck Kinectiv® Technology March 12, 2009 7:00 PM EDT Welcome to this "OR Live" Webcast presentation brought to you by Zimmer. During ...

284

Taper Hip Prosthesis  

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Full Text Available ... L Taper Hip Prosthesis with Modular Neck Kinectiv® Technology March 12, 2009 7:00 PM EDT Welcome ... In this case, we've used a Biolex ceramic femoral head against a standard polyethylene in the ...

285

Posterior traumatic dislocation of a Thompson prosthesis: report of a case.  

Science.gov (United States)

A case of posterior traumatic dislocation of a Thompson prosthesis with fracture of the posterior wall of the acetabulum is presented. Nine years after the reduction and fixation of the posterior acetabular wall and 10 years after the initial neck fracture, the patient was free of pain, and the hip range of motion was within normal limits. To the best of our knowledge, no such case has ever been described in the English literature. PMID:9839960

Soucacos, P N; Beris, A E; Xenakis, T A; Kostas, J

1998-11-01

286

Ipsilateral Fracture Shaft Femur with Neglected Dislocation of Prosthesis: A Case Report  

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Introduction: Neglected hip dislocation is rare in today’s world and after prosthesis replacement even rarer finding. However such patients may not report to surgeons until they develop secondary complications. Management of such patient’s is a challenge to the treating surgeon and need to be tailored suiting to patient’s demands, expectations and constraints of financial resources. We did not find a similar case in the electronic and print media and therefore report this case which was...

Mantu Jain; Amar Jyoti Bihari

2013-01-01

287

Congenital lobar emphysema.  

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Congenital lobar emphysema is a very rare congenital cystic malformation of the lung that can cause acute respiratory distress in early life. This paper reviews 6 cases of congenital lobar emphysema seen over a period of 10 years. The medical records of children with the diagnosis of congenital lobar emphysema were retrospectively reviewed for age at diagnosis, sex, presenting symptoms, investigations, treatment and outcome. There were 4 males and 2 females, and all of them presented before 6 months of age. Three presented with recurrent chest infection, while the other 3 had acute respiratory distress soon after birth. In all, the diagnosis was confirmed by chest x-ray, and the left upper lobe was affected in all of them. Although congenital lobar emphysema is rare, clinical awareness of this condition is important for early diagnosis and effective surgical treatment.

Ahmed H. Al-Salem

2002-03-01

288

Dislocations and dislocation reduction in space grown GaSb  

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The behaviour of dislocations in GaSb crystals grown in space both from a stoichiometric melt (floating zone method, FZ) and a Bi solution (floating solution zone, FSZ) respectively, is studied. Predominantly straight 60 dislocations with Burgers vectors of the type b=a/2 <110> in (111) glide planes are identified. In the 20 mm long FZ single crystal the linear growing out of the dislocations is observed which reduces the dislocation density in the centre of the crystal to values below 300 cm{sup -2}. The Bi incorporation in the FSZ crystal results in a misfit between seed and grown crystal and in a network of misfit dislocations at the interface. Thermocapillary convection during growth as well as the surface tension may be the reasons for the presence of curved dislocations and the higher dislocation density within a 1-2 mm border region at the edges of both of the crystals. (copyright 2009 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

Croell, A.; Tonn, J.; Schweizer, M.; Lauer, S. [Kristallographie, Institut fuer Geowissenschaften, Universitaet Freiburg (Germany); Benz, K.W. [Freiburger Materialforschungszentrum, Universitaet Freiburg (Germany); Tuomi, T.; Rantamaeki, R. [Optoelectronics Laboratory, Helsinki University of Technology, Espoo (Finland); McNally, P.; Curley, J. [Research Institute for Networks and Communications Engineering, Dublin City University, Dublin (Ireland); Danilewsky, A.N.

2009-10-15

289

[Locked posterior shoulder dislocation].  

Science.gov (United States)

Posterior shoulder dislocations are diagnosed rarely in every-day practice. Although the methods of radiological imaging have been developing and becoming commonly available, the cases of late diagnosis are still happening. Proper clinical examination and properly conducted and interpretated radiographs allow for identification and implementation of appropriate medical procedures. In spite of fact that such cases are identified expectionally rarely, a few types of procedural have been analised and numerous therapeutic methods have been described. The choice of an appropriate treatment is complicated and requires in-depth theoretical knowledge as well as the knowledge of specific conditions within the shoulder surgery. Based on an algorithm, proposed by Griggs, between 2000-2006 seven patients with locked posterior instability were treated, for all of them defect of the proximal humerus did not exceed 30%. In all these cases the goals of improving stability and range of motion were obtained. PMID:18853661

Gadek, Artur; Slusarski, Jakub; Kasprzyk, Marcin; Ciszek, Elzbieta

2008-01-01

290

Use of external fixation for perilunate dislocations and fracture dislocations.  

Science.gov (United States)

The purpose of this study was to review clinical and radiographic outcomes of perilunate dislocations and fracture dislocations treated with external fixation and K-wire fixation. Twenty patients (18 males and two females) with a mean age of 38 years (range 18-59) who had an acute dorsal perilunate dislocation or fracture dislocation were treated with the use of wrist external fixator and K-wires. The injuries included 12 perilunate dislocations, seven trans-scaphoid perilunate fracture dislocations, and one trans-styloid perilunate fracture dislocation. The median time from trauma to operation was 8 h (2-12 h). Indirect reduction via ligamentotaxis was achieved in all perilunate dislocation, and provisional K-wire fixation was added. In five of seven trans-scaphoid perilunate fracture dislocations, indirect reduction was achieved; whereas in the other two as well as in the case of trans-styloid perilunate fracture dislocation, open reduction was required. External fixator was supplemented with K-wires for stabilization of the fractures and the intercarpal intervals. The interosseous and capsular ligaments were not repaired, even after open reduction of fracture dislocations. The mean follow-up was 39 months (range 18-68 months). Range of motion and grip strength were measured. Cooney's scoring system was used for the assessment of clinical function. Radiographic evaluation included time to scaphoid union, measurement of radiographic parameters (scapholunate gap, scapholunate angle, lunotriquetral gap, and carpal height ratio) and any development of arthritis. The flexion-extension motion arc and grip strength of the injured wrist averaged 80 and 88%, respectively, of the corresponding values for the contralateral wrists. According to Cooney's clinical scoring system, overall functional outcomes were rated as excellent in four patients, good in eight, fair in six, and poor in two. Eighteen patients returned to their former occupations. Two patients with a trans-scaphoid perilunate injury developed nonunion of the scaphoid; one of them required scaphoid excision and midcarpal fusion. Two patients had radiographic evidence of arthritis. The use of external fixation and provisional K-wire fixation for the treatment of acute perilunate dislocations is associated with satisfactory midterm functional and radiographic outcomes. This minimally invasive treatment option is simple, reliable, and minimally invasive method that provides proper restoration and stable fixation of carpal alignment. PMID:25301167

Savvidou, Olga D; Beltsios, Michael; Sakellariou, Vasileios I; Mavrogenis, Andreas F; Christodoulou, Michael; Papagelopoulos, Panayiotis J

2014-11-01

291

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... the surgery using a procedure called an anterior approach the risk of dislocation is lessened. Your precautions ... you have had a surgery using an anterior approach your precautions will be different. Please consult with ...

292

Follow-up study of the cup supporter (F-S type in total hip replacement.  

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Full Text Available Twenty-five patients (30 hips have had a total hip replacement using the cup supporter developed in our department. This report describes the follow-up findings on these patients. The mean period after hip replacement was 2 years and 8 months (range from 6 months to 6 years. The cup supporter was used in patients with rheumatoid arthritis with acetabular protrusions, central migration of the prosthesis after hemi-arthroplasty, revision operation for a defecting acetabular floor, primary acetabular protrusions (including osteoarthritis with acetabular protrusions and traumatic fracture-dislocation of the hip. In five cases, autograft of bone was used in addition to the cup supporter for reinforcement of a thin acetabular floor. This combination appeared to provide good clinical results. The cup supporter was of value in revision operations due to loosening of the acetabular cup with severe acetabular protrusions.

Takahashi,Tsuneo

1985-10-01

293

Supernumerary nostril: Congenital adrenal hyperplasia with a rare congenital anomaly  

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Multiple or supernumerary nostril is a rare congenital anomaly with unknown etiology. The first case was reported by Lindsay as bilateral supernumerary nostrils. Supernumerary nostril cases are mostly unilateral and isolated. They are also reported with other congenital malformations like facial clefts and congenital anomalies like congenital auricular hypoplasia, congenital cataracts, eusophageal atresia and patent ductus arteriosus. Here, we report a case of supernumerary nostril with conge...

Ciloglu, Sinem; Duran, Alpay; Buyukdogan, Hasan; Yigit, Ahmet K.

2014-01-01

294

Congenital anomalies associated with hypothyroidism.  

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Seven of the 34 infants identified through the Welsh Hypothyroid Screening Programme have additional congenital abnormalities. Two infants have a previously undescribed syndrome, two have chromosomal abnormalities, two have congenital heart disease, and one has a myelomeningocoele. Congenital hypothyroidism often seems to be associated with other congenital abnormalities.

Chanoine, J. P.; Bourdoux, P.; Delange, F.

1986-01-01

295

Hips at risk osteoporosis and prevention of hip fractures  

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Hip fractures are the most serious consequence of osteoporosis, and are one important cause of morbidity and mortality among the elderly. Prophylactic treatment for hip fractures are now available. Early detection of individuals with increased risk for hip fractures is therefor of great interest. A subset of non-institutionalised patients with a first hip fracture (cases;n=l18) and controls (n=263), aged 65-85 years, underwent dual X-ray absorptiometry (DXA) of the femoral neck, quantitative ...

Ekman, Anna

2001-01-01

296

Management of acute glenohumeral dislocations.  

Science.gov (United States)

The glenohumeral joint is the most commonly dislocated joint in the human body. Glenohumeral joint dislocations account for a large number of orthopedic consultations in inpatient and outpatient settings. A thorough workup is required for accurate diagnosis and appropriate treatment of this injury. Complete history and physical examination and radiographic studies are essential, and reduction should always be attempted. In this article, we review the literature for each phase of the workup for glenohumeral dislocation and describe the anatomy, biomechanics, and basic science of the injury. Featured is a detailed synopsis of the more commonly used reduction maneuvers plus their risks and success rates. PMID:19649345

Sileo, Michael J; Joseph, Samuel; Nelson, Cory O; Nelson, Corey O; Botts, Jonathan D; Penna, James

2009-06-01

297

Indications, cost and safety implications of traditional post-operative radiography following total hip replacement  

International Nuclear Information System (INIS)

Purpose: As routine check radiographs obtained in the recovery room following total hip arthroplasty present issues of concern regarding quality, cost and safety of both staff and patient, we wished to determine the usefulness and indications for this investigation as a screening tool for post-operative dislocation. MethodsA 10-year retrospective analysis of all total hip replacements performed in a single Regional Orthopaedic Hospital, considering the total number of hip arthroplasties performed and the number of acute recovery room dislocations using theatre records and patient notes. We then randomly selected the recovery room and departmental radiographs of 100 patients and compared them with regard to the need for repeat radiographs and subsequent costs generated. ResultsRecovery room radiographs were not statistically superior to clinical assessment in the diagnosis of acute post-operative dislocations (P=0.7), and these were associated with increased costs because it was necessary to repeat poor quality films (P=0.008). The use of recovery room radiography was also therefore associated with significant safety implications for patients and staff. ConclusionsThe conclusion was that recovery room radiographs are neither a safe, effective nor economical method of screening for dislocation. Furthermore, they fail to provide reliable or reproducible information and expose patients and staff to extra radiation. It is recommended therefore that recovery room radiographed therefore that recovery room radiographs should only be obtained for clinical indications, with most routine post-operative radiography being performed in a standardised fashion in the radiology department

298

Malformaciones invalidantes en Chile.: Estudio ECLAMC, 1982-1997 Disabling congenital defects in Chile  

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Full Text Available Background: The ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas is an epidemiological surveillance program for congenital defects that operates in Chile since 1969. Aim: To communicate the frequency of disabling congenital defects in Chile in the period 1982-1997. Material and methods: A review of the ECLAMC registry, choosing 12 congenital defects: amelia, limb amputations, limb reductions, arthrogryposis, hip luxation and subluxation, spina bifida, hydrocephaly, microcephaly, cephalocele, talipes equinovarus, Down syndrome and multiple abnormalities. Results: In the study period, 283,403 births occurred and 7,917 newborns were malformed (7,654 born alive and 263 stillbirths. The congenital defects prevalence rates appeared higher in Chile than in other Latin American countries, specially among stillbirths. Among the studied maternity hospitals, the Clinical Hospital of the University of Chile, showed the higher prevalence of congenital defects. Rancagua and the Navy Hospital in Valparaiso have a high frequency of Down syndrome. Global rates in Chile and in the rest of ECLAMC for specific defects, do not have significant differences, except for hip subluxation, that has a lower incidence in Chile. Conclusions: The ECLAMC allows to have a good knowledge of the prevalence of congenital malformations in Latin America (Rev Méd Chile 2001; 129: 67-74.

Julio Nazer H

2001-01-01

299

Malformaciones invalidantes en Chile.: Estudio ECLAMC, 1982-1997 / Disabling congenital defects in Chile  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish [...] Abstract in english Background: The ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas) is an epidemiological surveillance program for congenital defects that operates in Chile since 1969. Aim: To communicate the frequency of disabling congenital defects in Chile in the period 1982-1997. Material [...] and methods: A review of the ECLAMC registry, choosing 12 congenital defects: amelia, limb amputations, limb reductions, arthrogryposis, hip luxation and subluxation, spina bifida, hydrocephaly, microcephaly, cephalocele, talipes equinovarus, Down syndrome and multiple abnormalities. Results: In the study period, 283,403 births occurred and 7,917 newborns were malformed (7,654 born alive and 263 stillbirths). The congenital defects prevalence rates appeared higher in Chile than in other Latin American countries, specially among stillbirths. Among the studied maternity hospitals, the Clinical Hospital of the University of Chile, showed the higher prevalence of congenital defects. Rancagua and the Navy Hospital in Valparaiso have a high frequency of Down syndrome. Global rates in Chile and in the rest of ECLAMC for specific defects, do not have significant differences, except for hip subluxation, that has a lower incidence in Chile. Conclusions: The ECLAMC allows to have a good knowledge of the prevalence of congenital malformations in Latin America (Rev Méd Chile 2001; 129: 67-74).

Julio, Nazer H; Juan, Margozzini R; Mariela, Rodríguez C; Mildred, Rojas N; Lucía, Cifuentes O.

2001-01-01

300

Congenital cerebrospinal otorrhea.  

Science.gov (United States)

Four locations for congenital cerebrospinal fluid fistula in the region of a normal labyrinth are reviewed. A congenital leak may occur through the petromastoid canal, a wide cochlear aqueduct, Hyrtl's fissure, or the facial canal. A fistula through the initial segment of the fallopian canal was successfully repaired in a two-year-old boy who had three episodes of meningitis following otitis media. Knowledge of these four sites of congenital defects provides a guideline for the surgeon in the identification and repair of cerebrospinal fluid leaks in the region of the labyrinth. PMID:464528

Gacek, R R; Leipzig, B

1979-01-01

 
 
 
 
301

Anterior Approach Total Hip Replacement  

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Full Text Available ... and E-poly antioxidant-infused technology during a hip replacement through the anterior supine intramuscular approach. “OR- ... Dr. Keith Berend perform an anterior approach total hip replacement with the patient on a regular OR ...

302

[Progress in external hip protectors].  

Science.gov (United States)

Hip fractures are a major cause of disability, impairment and death in elderly people. It has been reported that bisphosphonates significantly reduce the risk of hip fracture among elderly women with confirmed osteoporosis but not among elderly women selected primarily on the basis of risk factors other than low bone mineral density. External hip protectors have been developed as a measure of reducing the impact of the fall and thereby the chance of hip fractures in such high risk people. The results of 14 randomized controlled trials for the prevention of hip fractures by using hip protectors have been reported until 2004. However, Cochrane review of hip protectors has concluded that their effectiveness is uncertain. Although further research is required with different conditions, the most important issue of hip protectors is the low adherence rate. PMID:16951474

Koike, Tatsuya

2006-09-01

303

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... to receive the actual replacement hip, the femoral component of that hip. And what I'm doing ... a second. I have an actual size 10 component here, so we can show you exactly what ...

304

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... on occasion will carry pretty close to six times body weight, and in a regular person, during ... will actually have anywhere between two to four times body weight on the hip. The hip can ...

305

Hip Fractures among Older Adults  

Science.gov (United States)

... Social Media Publications Injury Center Hip Fractures Among Older Adults On this Page How big is the problem? ... Hip fractures can be prevented by preventing falls. Older adults can stay independent and reduce their chances of ...

306

Anterior Approach Total Hip Replacement  

Medline Plus

Full Text Available ... a hip replacement through the anterior supine intramuscular approach. “OR-Live,” the vision of improving health. Good ... to watch Dr. Keith Berend perform an anterior approach total hip replacement with the patient on a ...

307

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... on that view, we could maybe see the approach to that hip a little bit. What Dr. ... go through muscle and tendon and get that approach to that hip in a more minimally invasive ...

308

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... hip femoroacetabular impingement resection. Hip pain is not limited to senior citizens. It can begin to affect ... surgery. Yes, it has been done. There's very limited indications, but for some patients who have -- maybe ...

309

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... living without pain. The hip joint is a ball-and-socket joint that on occasion will carry ... cup side of the hip joint. There's the ball side and the cup side, and the cup ...

310

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... occasion will carry pretty close to six times body weight, and in a regular person, during walking, the ... actually have anywhere between two to four times body weight on the hip. The hip can get quite ...

311

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... last couple minutes here -- for patients who have osteoporosis, are they candidates for hip replacement surgery? 00: ... CARLOS J. LAVERNIA, MD, FAAOS: Great question. Absolutely. Osteoporosis is not a contraindication to getting your hip ...

312

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... taper hip. I designed this hip with a group of surgeons and engineers, and it's made out ... I'm putting in here will take the blood out, and through a system, okay, that we ...

313

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... very atraumatically go through -- go through muscle and tendon and get that approach to that hip in ... a little bit in a position where a tendon snaps over it as you move your hip, ...

314

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... hip joint. Because the patient cannot tolerate the non-operative route, which means the pills and the ... white cartilage, that's normal cartilage. That is a non-arthritic hip of the femoral head. On the ...

315

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... will carry pretty close to six times body weight, and in a regular person, during walking, the ... have anywhere between two to four times body weight on the hip. The hip can get quite ...

316

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... And that allows us to basically play video games and look inside the hip joint. So you ... may have because they've been visiting different websites about hip surgery. And now we're putting ...

317

Dual mobility cups in total hip arthroplasty.  

Science.gov (United States)

Total hip arthroplasty (THA) is considered one of the most successful surgical procedures in orthopaedics. With the increase in the number of THAs performed in the world in the next decades, reducing or preventing medical and mechanical complications such as post-operative THA instability will be of paramount importance, particularly in an emerging health care environment based on quality control and patient outcome. Dual mobility acetabular component (also known as unconstrained tripolar implant) was introduced in France at the end of the 1970s as an alternative to standard sockets, to reduce the risk of THA dislocation in patients undergoing primary THA in France. Dual mobility cups have recently gained wider attention in the United States as an alternative option in the prevention and treatment of instability in both primary and revision THA and offer the benefit of increased stability without compromising clinical outcomes and implant longevity. In this article, we review the use of dual mobility cup in total hip arthroplasty in terms of its history, biomechanics, outcomes and complications based on more than 20 years of medical literature. PMID:25035820

De Martino, Ivan; Triantafyllopoulos, Georgios Konstantinos; Sculco, Peter Keyes; Sculco, Thomas Peter

2014-07-18

318

Transient osteoporosis of the hip  

Digital Repository Infrastructure Vision for European Research (DRIVER)

  "nTransient osteoporosis of the hip as originally described in women, almost exclusively involved the left hip with the third trimester of pregnancy. It is now recognized as actually being more common in middle-aged men and affecting either hip. "nSymptoms include severe hip pain and decreased range of motion that resolves spontaneously in 6 to 12 months. The etiology is poorly understood, and the disease has been associated with a type of reflex sympathetic dystrophy syn...

Rengin Güzel; Sibel Ba?aran

2009-01-01

319

Complexity in dislocation dynamics model  

CERN Document Server

We propose a numerical model to study the viscoplastic deformation of ice single crystals. We consider long-range elastic interactions among dislocations, the possibility of mutual annihilation, and a multiplication mechanism representing the activation of Frank-Read sources due to dislocation pinning. The overdamped equations of motion for a collection of dislocations are integrated numerically using different externally applied stresses. Using this approach we analyze the avalanche-like rearrangements of dislocations during the dynamic evolution. We observe a power law distribution of avalanche sizes which we compare with acoustic emission experiments in ice single crystals under creep deformation. We emphasize the connections of our model with non-equilibrium phase transitions and critical phenomena.

Miguel, M C; Zapperi, S; Weiss, J; Grasso, J R; Vespignani, Alessandro; Zapperi, Stefano; Weiss, Jerome; Grasso, Jean-Robert

2001-01-01

320

Neglected locked vertical patellar dislocation.  

Science.gov (United States)

Patellar dislocations occurring about the vertical and horizontal axis are rare and irreducible. The neglected patellar dislocation is still rarer. We describe the clinical presentation and management of a case of neglected vertical patellar dislocation in a 6 year-old boy who sustained an external rotational strain with a laterally directed force to his knee. Initially the diagnosis was missed and 2 months later open reduction was done. The increased tension generated by the rotation of the lateral extensor retinaculum kept the patella locked in the lateral gutter even with the knee in full extension. Traumatic patellar dislocation with rotation around a vertical axis has been described earlier, but no such neglected case has been reported to the best of our knowledge. PMID:23162154

Gupta, Rakesh Kumar; Gupta, Vinay; Sangwan, Sukhbir Singh; Kamboj, Pradeep

2012-09-01

 
 
 
 
321

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available SMALL INCISION TOTAL HIP REPLACEMENT ARTHROPLASTY MERCY HOSPITAL MIAMI, FLORIDA May 3, 2007 00:00:08 ANNOUNCER: Welcome to Mercy Hospital in Miami, ... used to help thousands of people suffering from hip pain. A small-incision total hip arthroplasty and ...

322

Posterior occipitoaxial fusion for atlantoaxial dislocation associated with occipitalized atlas.  

Science.gov (United States)

Between 1989 and 1994, 50 patients suffering from congenital atlantoaxial dislocation with either an assimilated atlas or a thin or deficient posterior arch of the atlas were treated with occipitocervical fusion using the technique described by Jain and colleagues in 1993 with a few modifications. An artificial bridge created from the occipital bone along the margin of the foramen magnum was fused to the axis using sublaminar wiring and interposed strut and lateral onlay bone grafts. Ten patients (20%) also underwent atlantoaxial lateral joint fusion by intraarticular instillation of bone chips. In 22 patients (44%) with irreducible dislocation, posterior fusion was preceded by transoral odontoidectomy. In seven patients (14%) with ventral compression, who showed marked clinical improvement on traction despite radiological evidence of persisting atlantoaxial dislocation, occipitocervical fusion was performed without ventral decompression. Seven patients (14%) underwent a single-stage transoral odontoidectomy and posterior fusion. There was no perioperative mortality and the osseous fusion rate was 88%. Of the 43 patients available at follow-up examination (range 3-12 months), 31 patients (72.09%) improved, seven (16.28%) remained the same, and five (11.6%) deteriorated in comparison with their preoperative status. Hence, this technique achieves a stable occipitocervical arthrodesis without supplemental external orthoses and facilitates early postoperative mobilization. PMID:8613846

Jain, V K; Mittal, P; Banerji, D; Behari, S; Acharya, R; Chhabra, D K

1996-04-01

323

Atypical Bennett's fracture-dislocation.  

Science.gov (United States)

We herein report an unusual case of a fracture-dislocation of the thumb metacarpal base. The injury consisted of features typical of Bennett's fracture-dislocation of the thumb trapeziometacarpal joint, with additional rotation of the proximal fragment, signifying a greater ligamentous injury. Radiographic features of this injury are discussed together with its pathomechanics. Surgical management was undertaken due to the inherent instability of this injury. PMID:25631978

Ong, S; Sechachalam, S

2014-11-01

324

Congenital Constriction Band Syndrome  

Directory of Open Access Journals (Sweden)

Full Text Available Congenital constriction bands are anomalous bands that encircle a digit or an extremity. Congenitalconstriction band syndrome is rare condition and is mostly associated with other musculoskeletaldisorders.We report such a rare experience.

Rajesh Gupta, Fareed Malik, Rishabh Gupta, M.A.Basit, Dara Singh

2008-04-01

325

Effect of cup inclination on predicted contact stress-induced volumetric wear in total hip replacement.  

Science.gov (United States)

In order to increase the lifetime of the total hip endoprosthesis, it is necessary to understand mechanisms leading to its failure. In this work, we address volumetric wear of the artificial cup, in particular the effect of its inclination with respect to the vertical. Volumetric wear was calculated by using mathematical models for resultant hip force, contact stress and penetration of the prosthesis head into the cup. Relevance of the dependence of volumetric wear on inclination of the cup (its abduction angle ?A) was assessed by the results of 95 hips with implanted endoprosthesis. Geometrical parameters obtained from standard antero-posterior radiographs were taken as input data. Volumetric wear decreases with increasing cup abduction angle ?A. The correlation within the population of 95 hips was statistically significant (P = 0.006). Large cup abduction angle minimises predicted volumetric wear but may increase the risk for dislocation of the artificial head from the cup in the one-legged stance. Cup abduction angle and direction of the resultant hip force may compensate each other to achieve optimal position of the cup with respect to wear and dislocation in the one-legged stance for a particular patient. PMID:24830356

Rijavec, B; Košak, R; Daniel, M; Kralj-Igli?, V; Dolinar, D

2015-10-01

326

Generalized dynamics of moving dislocations in quasicrystals  

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A theoretical framework for dislocation dynamics in quasicrystals is provided according to the continuum theory of dislocations. Firstly, we present the fundamental theory for moving dislocations in quasicrystals giving the dislocation density tensors and introducing the dislocation current tensors for the phonon and phason fields, including the Bianchi identities. Next, we give the equations of motion for the incompatible elastodynamics as well as for the incompatible elast...

Agiasofitou, Eleni; Lazar, Markus; Kirchner, Helmut

2010-01-01

327

Dislocation-driven deformations in graphene.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The movement of dislocations in a crystal is the key mechanism for plastic deformation in all materials. Studies of dislocations have focused on three-dimensional materials, and there is little experimental evidence regarding the dynamics of dislocations and their impact at the atomic level on the lattice structure of graphene. We studied the dynamics of dislocation pairs in graphene, recorded with single-atom sensitivity. We examined stepwise dislocation movement along the zig-zag lattice di...

Warner, Jh; Margine, Er; Mukai, M.; Robertson, Aw; Giustino, F.; Kirkland, Ai

2012-01-01

328

Hip.html">Indian Academy of Sciences - FellowsHip  

Indian Academy of Sciences (India)

indian academy of sciences - fellowsHip   fellowsHip information about nomination to the fellowsHip1. nomination forms are provided only to the fellows and are not made available on the academy website.2. those pursuing research in india are eligible to be nominated.3. the last date for receipt of new nominations is 31st may.4. the academy offers only fellowsHip and not membersHip against payment.the process of election of fellows is desc ...

329

Congenital cytomegalovirus infection.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Clinical details of 50 infants with congenital cytomegalovirus infection identified in a prospective study are reported. The mean birthweight, gestational age, and head circumference of children with congenital cytomegalovirus infection were not significantly different from those of controls. Three (6%) had symptoms at birth--two neurological and one pneumonitis. In the first four months of life transient hepatosplenomegaly occurred in two infected children and six suffered interstitial pneum...

José Ricardo Dias Bertagnon; Sarah Rossi

1987-01-01

330

Congenital cystic lung diseases.  

Science.gov (United States)

Congenital cystic diseases of the lung are a rare but significant cause of morbidity in children and young adults presenting with respiratory distress and repeated chest infections. They consist of cystic adenomatoid malformation, bronchogenic cyst, pulmonary sequestration, and congenital lobar emphysema. Surgical treatment is a safe and an effective method of treatment. Chest X-ray and computed tomography are the key imaging modalities used for diagnosis. PMID:23607074

Jain, Aditi; Anand, K; Singla, Saurabh; Kumar, Ashok

2013-01-01

331

Congenital Cystic Lung Diseases  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Congenital cystic diseases of the lung are a rare but significant cause of morbidity in children and young adults presenting with respiratory distress and repeated chest infections. They consist of cystic adenomatoid malformation, bronchogenic cyst, pulmonary sequestration, and congenital lobar emphysema. Surgical treatment is a safe and an effective method of treatment. Chest X-ray and computed tomography are the key imaging modalities used for diagnosis.

Jain, Aditi; Anand, K.; Singla, Saurabh; Kumar, Ashok

2013-01-01

332

[Femoroacetabular impingement syndrome--pre-arthritis of the hip].  

Science.gov (United States)

The diagnosis of femoroacetabular impingement (FAI) syndrome is relatively recent. Therefore, the concept of early hip arthritis development is an interesting issue. The assumed prevalence of this disease is rather high and any postponement of necessity to perform total hip arthroplasty (THA) for hip arthritis, as a FAI sequela, should bring benefits to medical care as well as economy. To make an exact diagnosis it is necessary, in addition to essential clinical examination and standard conventional radiography, to carry out MRI that, in indicated cases, is combined with arthrography. Surgical treatment includes extensive procedures, such as controlled surgical dislocation of the hip with modeling of the femoral head and periacetabular osteotomy. In the case of primary surgery for FAI, short- and middleterm results so far obtained are promising, but only long-term results will show whether, and for how many years, this therapy is able to postpone the necessity of THA. For the future, biological therapy using autologous hyaline cartilage transfer will remain a challenge also for this indication. PMID:18001634

Chládek, P; Trc, T

2007-10-01

333

Anterior Approach Total Hip Replacement  

Medline Plus

Full Text Available ... to not be worried as much as about dislocation as -- Exactly. The soft tissues here are intact. ... from a Dr. Carter here that wondered if, dislocations aside, what about just choice of bearing based ...

334

High-Dispersion Spectroscopic Study of Solar Twins: HIP 56948, HIP 79672, and HIP 100963  

Digital Repository Infrastructure Vision for European Research (DRIVER)

An intensive spectroscopic study was performed for three representative solar twins (HIP 56948, HIP 79672, and HIP 100963) as well as for the Sun (Moon; reference standard), with an intention of (1) quantitatively discussing the relative-to-Sun similarities based on the precisely established differential parameters and (2) investigating the reason causing the Li abundance differences despite their similarities. It was concluded that HIP 56948 most resembles the Sun in every ...

Takeda, Yoichi; Tajitsu, Akito

2009-01-01

335

Giant congenital melanocytic nevus.  

Science.gov (United States)

Giant congenital melanocytic nevus is usually defined as a melanocytic lesion present at birth that will reach a diameter ? 20 cm in adulthood. Its incidence is estimated in surface, well-demarcated borders and hypertrichosis. Congenital melanocytic nevus is primarily a clinical diagnosis. However, congenital nevi are histologically distinguished from acquired nevi mainly by their larger size, the spread of the nevus cells to the deep layers of the skin and by their more varied architecture and morphology. Although giant congenital melanocytic nevus is recognized as a risk factor for the development of melanoma, the precise magnitude of this risk is still controversial. The estimated lifetime risk of developing melanoma varies from 5 to 10%. On account of these uncertainties and the size of the lesions, the management of giant congenital melanocytic nevus needs individualization. Treatment may include surgical and non-surgical procedures, psychological intervention and/or clinical follow-up, with special attention to changes in color, texture or on the surface of the lesion. The only absolute indication for surgery in giant congenital melanocytic nevus is the development of a malignant neoplasm on the lesion. PMID:24474093

Viana, Ana Carolina Leite; Gontijo, Bernardo; Bittencourt, Flávia Vasques

2013-01-01

336

Hip protectors and prevention of hip fractures in older persons.  

Science.gov (United States)

Hip fractures are a worldwide problem with consequences for the health care system as well as for the individual patient. Falls in the presence of osteoporosis are the main reason for these fractures. The effectiveness of hip protectors in preventing hip fractures has been proven in several biomechanical studies; however, adherence is low. Therefore clinical studies reveal conflicting results. In order to increase adherence, it is necessary to educate older persons who are at risk on the dangers of hip fractures and the value of hip protectors as a preventive device. The design and wearing comfort of hip protectors are also important factors in adherence. Hip protectors with a more patient-friendly design are now available, and new studies should help clarify relevant issues. PMID:17668960

Holzer, Gerold; Holzer, Lukas A

2007-08-01

337

Congenital distal humeral dysplasia: a case report  

Energy Technology Data Exchange (ETDEWEB)

Congenital dysplasia of the humerus is very rare. It is characteristically seen in omodysplasia and has also been reported as one of the associated features of Larsen's syndrome. We report a 4-year-old girl with bilateral humero-ulnar dysplasia, with dislocation of the elbows, facial dysmorphism, ball-and-socket ankles and foot deformities. Although the elbow dysplasia is similar to that seen in Larsen's syndrome, other pathognomic features of Larsen's syndrome were absent. The changes seen in the elbows in this patient are also different from those encountered in omodysplasia. We believe that this condition may be a distinct form of skeletal dysplasia hitherto undescribed. (orig.)

Joseph, Benjamin; Varghese, Renjit A. [Department of Orthopaedics, Kasturba Medical College, Manipal 576119, Karnataka State (India)

2003-01-01

338

The painful hip: new concepts  

Energy Technology Data Exchange (ETDEWEB)

Hip pain is a common condition, and the work-up often includes imaging. This article reviews the normal MR anatomy of the hip and the imaging findings of internal derangements, snapping hip, and femoral acetabular impingement. We will describe the role of MR arthrography in evaluating the patient with suspected labral and articular cartilage abnormalities, as well as the pitfalls in interpretation. We will review the causes of a snapping hip, and the role of sonography in evaluating and guiding treatment of the snapping iliopsoas tendon. We will also review the radiographic and MRI signs of femoroacetabular impingement (FAI), a cause of early degenerative joint disease and hip pain. (orig.)

Blankenbaker, Donna G.; Tuite, Michael J. [University of Wisconsin Medical School, Department of Radiology, Division of Musculoskeletal Imaging, Madison, WI (United States)

2006-06-15

339

MR imaging in congenital lower limb deformities  

International Nuclear Information System (INIS)

Treatment for children with cogenital deformities of the lower extremities may vary, depending on the state of the unossified skeletal structures and surrounding soft tissues. The purpose of our study was to demonstrate the spectrum of the osteochondral and extrasosseous abnormalities as depicted with MR imaging. We retrospectively reviewed MR examinations of 13 limbs of ten children (aged 1 month-9 years, mean 2.1 years) with longitudinal and transverse deformities of the lower extremities. The lesions imaged were fibular hemimelia (n=5), tibial hemimelia (n=5), and congenital constriction bands (n=3). Each examination was assessed for abnormalities in the osteocartilaginous and extraosseous (articular or periarticular components such as ligaments, tendons, and menisci; the muscles and the arteries) structures. Abnormalities were seen in all patients. Osteocartilaginous abnormalities in the patients with longitudinal deformities included abnormal distal femoral epiphyses, abnormal proximal tribial physes, hypertrophied and dislocated proximal fibular epiphyses, unsuspected fibular and tibial remnants, and absence or coalition of the tarsal bones. No osteocartilaginous abnormalities were seen in the patients with congential constriction bands. Articular abormalities in patients with either form of hemimelia included absent cruciate ligaments and menisci, dislocated or absent cartilaginous patellae, absent patellar tendons, and abnormal collateral ligaments. All but on abnormal collateral ligaments. All but one limb imaged had absent or attenuated muscle groups. Of the nine MR arteriograms performed at the level of the knee, eight were abnormal. The normal popliteal trifurcation was absent or in an abnormal location. We conclude that MR imaging of children with congenital lower extremity deformities shows many osteochondral and extraosseous abnormalities that are not depicted by conventional radiogrpahy. This information can help to plan early surgical intervention and prosthetic rehabilitation. (orig.)

340

[Dissociation of a modular acetabular component in an uncemented total hip prosthesis. Effect of the modular design and anti-luxation rim. A case report].  

Science.gov (United States)

We report a case of dissociation between polyethylene and metal-backing of the acetabular component of a total hip prosthesis after reduction of a late dislocation. We refer to advantages and disadvantages of an elevated-rim acetabular liner in total hip arthroplasty. The position of the metallic markers of the polyethylene and/or excentric situation of the neck-head complex from the metal-back allowed us to diagnose it. An appropriate surgical technique avoiding the joint laxity, firm assembly of the modular components when they are implanted, gentle reduction of an eventual dislocation and fluoroscopic control, are factors which can avoid this rare complication. PMID:10422137

Blanco Blanco, J; Tapia Casado, L; Ramos Galea, R; Léon Vasquez, F

1999-06-01

 
 
 
 
341

Dislocation Multi-junctions and Strain Hardening  

Energy Technology Data Exchange (ETDEWEB)

At the microscopic scale, the strength of a crystal derives from the motion, multiplication and interaction of distinctive line defects--dislocations. First theorized in 1934 to explain low magnitudes of crystal strength observed experimentally, the existence of dislocations was confirmed only two decades later. Much of the research in dislocation physics has since focused on dislocation interactions and their role in strain hardening: a common phenomenon in which continued deformation increases a crystal's strength. The existing theory relates strain hardening to pair-wise dislocation reactions in which two intersecting dislocations form junctions tying dislocations together. Here we report that interactions among three dislocations result in the formation of unusual elements of dislocation network topology, termed hereafter multi-junctions. The existence of multi-junctions is first predicted by Dislocation Dynamics (DD) and atomistic simulations and then confirmed by the transmission electron microscopy (TEM) experiments in single crystal molybdenum. In large-scale Dislocation Dynamics simulations, multi-junctions present very strong, nearly indestructible, obstacles to dislocation motion and furnish new sources for dislocation multiplication thereby playing an essential role in the evolution of dislocation microstructure and strength of deforming crystals. Simulation analyses conclude that multi-junctions are responsible for the strong orientation dependence of strain hardening in BCC crystals.

Bulatov, V; Hsiung, L; Tang, M; Arsenlis, A; Bartelt, M; Cai, W; Florando, J; Hiratani, M; Rhee, M; Hommes, G; Pierce, T; Diaz de la Rubia, T

2006-06-20

342

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... as you strengthen your new hip joint. Start slow and progress gradually. Set achievable goals for yourself and discuss them with your physical therapist. Examples of such goals include: • walking 100 yards • going up or down the stairs • ...

343

Taper Hip Prosthesis  

Medline Plus

Full Text Available Zimmer M/L Taper Hip Prosthesis with Modular Neck Kinectiv® Technology March 12, 2009 7:00 PM EDT Welcome ... at the tip of the trochanter and I'm going to ultimately make an “H” shaped incision ...

344

Taper Hip Prosthesis  

Medline Plus

Full Text Available Zimmer M/L Taper Hip Prosthesis with Modular Neck Kinectiv® Technology March 12, 2009 7:00 PM ... OR Live" Webcast presentation brought to you by Zimmer. During the program, it’s easy for you to ...

345

Hip Replacement - Physical Therapy  

Medline Plus

Full Text Available ... X-Plain.com pt030105 Last reviewed: 11/10/2010 1 The muscles that allow the hip to ... X-Plain.com pt030105 Last reviewed: 11/10/2010 2 Immediately after surgery a large wedge, called ...

346

Hip joint replacement  

Science.gov (United States)

... Jones CA. Total joint arthroplasties: current concepts of patient outcomes after surgery. Rheum Dis Clin North Am . 2007;33(1):71-86. Schmalzried TP. Metal-metal bearing surfaces in hip arthroplasty. Orthopedics . 2009;32. Lindstrom D, Sadr Azodi O, Wladis ...

347

Revision hip arthroplasty using a modular revision hip system in cases of severe bone loss.  

Science.gov (United States)

We sought to identify outcomes of the Restoration Modular Hip System in cases of severe femoral bone stock deficiency. We performed a retrospective review of 55 revTHAs with a mean follow-up of 32 months (24-60 months). Outcomes included the WOMAC and HHS. Preoperative bone loss was categorized as Paprosky 3A (n = 13), 3B (n = 14), and 4 (n = 17). Periprosthetic fractures were classified as Vancouver B2 (n = 6) and B3 (n = 5). 53 of 55 stems were in situ at time of final review. WOMAC improved from 46 ± 18 to 70 ± 22 and HHS improved from 47 ± 15 to 78 ± 15. Complications were identified in 9 patients, which included dislocation (3), subsidence (2), infection (2), and periprosthetic fracture (2). In cases of significant proximal femoral bone deficiency, this stem demonstrated improvement in clinical outcomes with good results at short-term follow up. PMID:24768500

Dzaja, Ivan; Lyons, Matt C; McCalden, Richard W; Naudie, Douglas D D; Howard, James L

2014-08-01

348

The association of congenital neuroblastoma and congenital heart disease  

International Nuclear Information System (INIS)

Several authors have reported an association between neuroblastoma and congenital heart disease; others contend that, unlike specific wellknown associations between malignancy and congenital defects (Wilm's tumor and aniridia, leukemia and Down's syndrome), no real relationship exists. We present three cases of cyanotic congenital heart disease in which subclinical neuroblastoma was found. We speculate that abnormal neural crest cell migration and development may be a common link between cardiac malformations and congenital neuroblastoma. (orig.)

349

The climb of dissociated dislocations  

International Nuclear Information System (INIS)

The weak-beam technique of electron microscopy has been used to directly study the climb of dissociated dislocations under conditions of high supersaturation of point defects introduced by electron irradiation. In a Cu-13%Al alloy irradiated at room temperature, prismatic loops (assumed to be of interstitial type because of the dislocation bias) are nucleated on the individual partials. The loop Burgers vectors are a function of partial orientation and are such as to minimize the elastic energy of the resultant configuration of partial plus loop, and to maximize the edge component of the loops. In Cu-13%Al irradiated at temperatures in excess of 2000C complex dislocation configurations are observed which are quite different from those observed at room temperature. These results may be understood in terms of the nucleation of prismatic loops, followed by their growth in directions controlled by the climb force on the parts of the prismatic loops not lying in the glide plane of the dislocations and their interaction with the non-parent partial. In this paper the mechanisms of climb of dissociated dislocations in Cu-13%Al are explained. The results are compared with preliminary observations carried out on a Cu-10%Al alloy and on pure Si. (author)

350

HYDROGEN-DISLOCATION INTERACTIONS AND INTRINSIC DISLOCATION RELAXATION IN NIOBIUM  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The dislocation relaxation between 100 K and 200 K (1kHz) in plastically deformed niobium, formerly named "?-relaxation" is a hydrogen Snoek-Köster relaxation (cold work relaxation). This is shown by experiments on extremely degassed samples, which contained controlled amounts of hydrogen and/or oxygen. The intrinsic, hydrogen-free dislocation relaxation appears between 30 K and 70 K (1kHz), the exact peak location depends on the interstitial (O,N) content. This relaxation is probably ident...

Maul, M.; Schultz, H.

1981-01-01

351

Congenital contractural arachnodactyly with neurogenic muscular atrophy: case report  

Directory of Open Access Journals (Sweden)

Full Text Available We report the case of a 3-1/2-year-old girl with hypotonia, multiple joint contractures, hip luxation, arachnodactyly, adducted thumbs, dolichostenomelia, and abnormal external ears suggesting the diagnosis of congenital contractural arachnodactyly (CCA. The serum muscle enzimes were normal and the needle electromyography showed active and chronic denervation. The muscle biopsy demonstrated active and chronic denervation compatible with spinal muscular atrophy. Analysis of exons 7 and 8 of survival motor neuron gene through polymerase chain reaction did not show deletions. Neurogenic muscular atrophy is a new abnormality associated with CCA, suggesting that CCA is clinically heterogeneous.

Scola Rosana Herminia

2001-01-01

352

Congenital contractural arachnodactyly with neurogenic muscular atrophy: case report.  

Science.gov (United States)

We report the case of a 3-(1/2)-year-old girl with hypotonia, multiple joint contractures, hip luxation, arachnodactyly, adducted thumbs, dolichostenomelia, and abnormal external ears suggesting the diagnosis of congenital contractural arachnodactyly (CCA). The serum muscle enzymes were normal and the needle electromyography showed active and chronic denervation. The muscle biopsy demonstrated active and chronic denervation compatible with spinal muscular atrophy. Analysis of exons 7 and 8 of survival motor neuron gene through polymerase chain reaction did not show deletions. Neurogenic muscular atrophy is a new abnormality associated with CCA, suggesting that CCA is clinically heterogeneous. PMID:11400038

Scola, R H; Werneck, L C; Iwamoto, F M; Ribas, L C; Raskin, S; Correa Neto, Y

2001-06-01

353

Impact of Congenital Heart Defects  

Science.gov (United States)

... other learning difficulties. What is the social/financial impact of congenital heart defects? Successful treatment requires highly ... resources to achieve optimum functioning. What is the impact of congenital heart disease on families?

354

Congenital Cardiology Today  

Science.gov (United States)

The mission of the monthly newsletter, Congenital Cardiology Today (CCT), "is to provide reliable and timely information on devices and procedures, patient therapy, drug therapy, supporting technologies, products and services, as well as training opportunities for pediatric cardiologists, hospitals and allied organizations which support their practice." The electronic publication in pdf format is available free-of-charge to qualified professionals around the world working in the fields of pediatric and congenital cardiology (or in a related field). The 21-page April 2005 issue contains such articles as "Congenital Heart Disease in the Developing World," and "Screening for Sudden Cardiac Death Using Pre-participation Physical Exam." The newsletter also provides a list of upcoming medical conferences. Information about requesting free, monthly subscriptions to the North American and-or International editions of the newsletter can be found on the final page of the April issue.

355

Congenital right hemidiaphragmatic agenesis.  

Science.gov (United States)

Congenital diaphragmatic hernia is a congenital defect of the diaphragm through which intestine and other viscera herniate into the chest. In extreme form of diaphragmatic maldevelopment, there might be a complete agenesis of diaphragm. A 45-day old male infant was presented with fever, cough and respiratory distress for a week. Chest radiograph showed right-sided congenital diaphragmatic hernia. The patient underwent surgical exploration and found to have an unusual and large defect of right hemidiaphragm. The diaphragm was absent on anterior and lateral aspects of the chest wall and only a small rim of diaphragm was present on posterior aspect. The defect was identified as agenesis of right hemidiaphragm and successfully managed by suturing the posterior rim of diaphragm to the intercostal muscles and ribs. This report describes successful management of hemidiaphragmatic agenesis without incorporating a prosthetic material. PMID:22345915

Mirza, Bilal; Bashir, Zahid; Sheikh, Afzal

2012-01-01

356

Current concepts and trends for operative treatment of FAI: hip arthroscopy  

Digital Repository Infrastructure Vision for European Research (DRIVER)

There has been an increasing body of literature regarding arthroscopic management of femoroacetabular impingement (FAI). Refinement of arthroscopic techniques has allowed for more complete management of FAI, and meta-analysis and systematic reviews have shown comparable outcomes to surgical hip dislocation with appropriate indications. There are still, however, pathomorphologies that are not accessible or much more challenging to address arthroscopically, and open corrective procedures should...

Larson, Christopher M.; Stone, Rebecca M.

2013-01-01

357

Contiguous bifacet cervical fracture dislocations  

Scientific Electronic Library Online (English)

Full Text Available SciELO South Africa | Language: English Abstract in english Bifacet dislocations of the cervical spine are severe debilitating injuries often associated with complete cord injury. Contiguous bilateral facet dislocations are extremely rare and, to the best of our knowledge, have only been described once before. We present a patient who was involved in a road [...] traffic accident. Pre-operative radiographs suggested contiguous bifacet injury and this was confirmed intra-operatively. This should alert physicians to the possibility of contiguous injuries to the cervical spine.

JWM, Kigera; M, Nyati.

358

Bipolar dislocation of the clavicle.  

Science.gov (United States)

Bipolar dislocation of the clavicle at acromioclavicular and sternoclavicular joint is an uncommon traumatic injury. The conservative treatments adopted in the past is associated with redislocation dysfunction and deformity. A 41 years old lady with bipolar dislocation of right shoulder is treated surgically by open reduction and internal fixation by oblique T-plate at sternoclavicular joint and Kirschner wire stabilization at acromioclavicular joint. The patient showed satisfactory recovery with full range of motion of the right shoulder and normal muscular strength. The case reported in view of rarity and at 2 years followup. PMID:23325981

Jiang, Wei; Gao, Shu-Guang; Li, Yu-Sheng; Lei, Guang-Hua

2012-11-01

359

Congenital skeletal abnormalities in a tawny owl chick (Strix aluco).  

Science.gov (United States)

In this case report, we describe a tawny owl chick (Strix aluco) coming from a Wild Fauna Recovery Center with multiple congenital malformations in the limbs. The animal was unable to fly and showed marked malnutrition and poor general appearance. Physical, radiologic, and anatomic examinations showed osseous malformations including dislocation of radius and carpometacarpus with abnormal nonfunctional fixation of ligamentum propatagialis, absence of most parts of the bones of the manus in both wings, and twisted nonfused left tarsometatarsus with marked griphosis of digits. Routine toxicologic and pathologic examinations did not reveal a specific etiology. PMID:14562912

Barreiro, Andrés; de Trocóniz, Patricia Fdez; Vila, Mónica; López-Beceiro, Ana M; Pereira, José L

2003-01-01

360

Isolated Congenital Heart Block  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Isolated congenital heart block, frequently seen in mothers who have connective-tissue disease, can be transmitted to the fetus through transplacental passage of anti-Ro/SSA and anti-La/SSB autoantibodies. Even if the antibodies appear transiently in the fetal circulation, the block is permanent and can require pacemaker implantation. Complete congenital heart block is seen in 1% to 5% of neonates born to mothers who carry these autoantibodies. Herein, we report the case of a baby—born to a...

Tunaoglu, F. Sedef; Yildirim, Ayse; Vurali, Dogus

2010-01-01

 
 
 
 
361

Congenital hearing impairment  

International Nuclear Information System (INIS)

Establishing the etiology of congenital hearing impairment can significantly improve treatment for certain causes of hearing loss and facilitates genetic counseling. High-resolution CT and MRI have contributed to the evaluation and management of hearing impairment. In addition, with the identification of innumerable genetic loci and genetic defects involved in hearing loss, genetic testing has emerged as an invaluable tool in the assessment of hearing impairment. Some of the common forms of congenital hearing loss are reviewed and their imaging features illustrated. (orig.)

362

Congenital hearing impairment  

Energy Technology Data Exchange (ETDEWEB)

Establishing the etiology of congenital hearing impairment can significantly improve treatment for certain causes of hearing loss and facilitates genetic counseling. High-resolution CT and MRI have contributed to the evaluation and management of hearing impairment. In addition, with the identification of innumerable genetic loci and genetic defects involved in hearing loss, genetic testing has emerged as an invaluable tool in the assessment of hearing impairment. Some of the common forms of congenital hearing loss are reviewed and their imaging features illustrated. (orig.)

Robson, Caroline D. [Children' s Hospital and Harvard Medical School, Division of Neuroradiology, Department of Radiology, Boston, MA (United States)

2006-04-15

363

Congenital spinal malformations  

International Nuclear Information System (INIS)

Congenital spinal malformations form a complex and heterogeneous group of disorders whose pathogenesis is best explained embryologically. Radiologically, it is important to formulate a diagnosis when the disorder first becomes symptomatic. However, it is also crucial to detect complications of the disorder or of the respective therapeutic interventions in the further course of the disease such as hydromyelia or re-tethering after repair of a meningomyelocele. Moreover, once a congenital spinal malformation is diagnosed, associated malformations should be sought after. A possible syndromal classification such as in OEIS- or VACTERL-syndromes should also be considered. (orig.)

364

Intermittent dislocation flow in viscoplastic deformation  

CERN Document Server

The viscoplastic deformation (creep) of crystalline materials under constant stress involves the motion of a large number of interacting dislocations. Analytical methods and sophisticated `dislocation-dynamics' simulations have proved very effective in the study of dislocation patterning, and have led to macroscopic constitutive laws of plastic deformation. Yet, a statistical analysis of the dynamics of an assembly of interacting dislocations has not hitherto been performed. Here we report acoustic emission measurements on stressed ice single crystals, the results of which indicate that dislocations move in a scale-free intermittent fashion. This result is confirmed by numerical simulations of a model of interacting dislocations that successfully reproduces the main features of the experiment. We find that dislocations generate a slowly evolving configuration landscape which coexists with rapid collective rearrangements. These rearrangements involve a comparatively small fraction of the dislocations and lead ...

Miguel, M C; Zapperi, S; Weiss, J; Grasso, J R; Vespignani, Alessandro; Zapperi, Stefano; Weiss, Jerome; Grasso, Jean-Robert

2001-01-01

365

American Association of Hip and Knee Surgeons  

Science.gov (United States)

American Association of Hip and Knee Surgeons Advocacy, Education, Research Annual Meeting Join AAHKS Enhance Your Career Join AAHKS ... Save the Date for Specialty Day The American Association of Hip and Knee Surgeons and The Hip ...

366

Low temperature hydrogenation of dislocated Si  

Energy Technology Data Exchange (ETDEWEB)

The effect of wet chemical etching and subsequent annealing on the electrical activity of the dislocation-related centres in n-type Si is investigated by the deep-level transient spectroscopy. It is observed that hydrogen penetrates into the samples already during room temperature etching but passivates the dislocation centres only after 300 C annealing. The different dislocation centres exhibit different efficiency of hydrogen passivation. Possible reasons for the observed peculiarities of the dislocation passivation are discussed. (orig.) 15 refs.

Feklisova, O.V.; Yakimov, E.B.; Yarykin, N.A. [RAS, Chernogolovka (Russian Federation). IPTM; Weber, J. [MPI-FKF, Stuttgart, D-70506 (Germany)

1999-02-12

367

Quantitative Characterization of Partial Dislocations in Nanocrystalline Metals  

International Nuclear Information System (INIS)

Partial dislocations in nanocrystalline metals are introduced and a modified dislocation density formula for partial dislocations is established by x-ray line profile analysis theories. Effects of factors on the determination of partial dislocation density are discussed. From the correlation between the partial and perfect dislocations, partial dislocation density is simply quantitative characterized by drawing on the evaluation methodology of perfect dislocations. Dislocation densities of nanocrystalline nickel calculated from two different equations are compared additionally

368

Readmissions after fast-track hip and knee arthroplasty  

DEFF Research Database (Denmark)

INTRODUCTION: With the implementation of fast-track surgery with optimization of both logistical and clinical features, the postoperative convalescence has been reduced as functional milestones have been achieved earlier and consequently length of stay (LOS) in hospital has been reduced. However, it has been speculated that a decrease in LOS may be associated with an increase in readmissions in general, including risk of dislocation after total hip arthroplasty (THA) or manipulation after total knee arthroplasty (TKA). MATERIALS AND METHODS: 1,731 consecutive, unselected patients were operated with primary THA or TKA in a well-described standardized fast-track setup from 2004 to 2008. All readmissions and deaths within 90 days were analyzed using the national health register. RESULTS: Mean LOS decreased from 6.3 to 3.1 days. Within 90 days, 15.6% of patients following TKA were readmitted as opposed to 10.9% after THA (p = 0.005). Three deaths (0.17%) were associated with clotting episodes. Suspicion of DVT (not found) and suspicion of infection made up half of the readmissions. Readmissions in general and for thromboembolic events, dislocations and manipulations in specific did not increase with decreasing LOS. There was no difference between readmission rates per year for either TKA or THA but there was a significantly reduced risk of dislocation found with decreasing LOS comparing each year from 2005 to 2007 with the index year of 2004 (with the longest LOS and the highest incidence of dislocation). CONCLUSION: Fast-track TKA and THA do not increase the readmission rate. Readmissions are more frequent after TKA than THA, but dislocation after THA and manipulation after TKA do not increase as LOS is decreasing.

Husted, Henrik; Otte, Kristian Stahl

2010-01-01

369

Electron irradiation of dislocation dipoles in antimony  

International Nuclear Information System (INIS)

The authors show that in addition to the well-known trapping effect of single dislocations, some dislocation configurations also act as very efficient sinks for point defects. They present the example of deformation dislocation dipoles and elongated loops which are introduced before irradiation during the preparation and thinning of the specimens. (Auth.)

370

Scattering of phonons by dislocations  

International Nuclear Information System (INIS)

By 1950, an explicit effort had been launched to use lattice thermal conductivity measurements in the investigation of defect structures in solids. This technique has been highly successful, especially when combined with the measurements of other properties such as optical absorption. One exception has been the study of dislocations. Although dislocations have a profound effect on the phonon thermal conductivity, the mechanisms of the phonon-dislocation interaction are poorly understood. The most basic questions are still debated in the literature. It therefore is pointless to attempt a quantitative comparison between an extensive accumulation of experimental data on the one hand, and the numerous theoretical models on the other. Instead, this chapter will attempt to glean a few qualitative conclusions from the existing experimental data. These results will then be compared with two general models which incorporate, in a qualitative manner, most of the proposed theories of the phonon-dislocation interaction. Until very recently, measurement of thermal conductivity was the only means available to probe the interaction between phonons and defects at phonon frequencies above the standard ultrasonic range of approx. = 109 Hz. The introductory paragraphs provide a brief review of the thermal-conductivity technique and the problems which are encountered in practice. There is also a brief presentation of the theoretical models and the complications that may occur in more realistic situations

371

The Etiology of Osteoarthritis of the Hip: An Integrated Mechanical Concept  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The etiology of osteoarthritis of the hip has long been considered secondary (eg, to congenital or developmental deformities) or primary (presuming some underlying abnormality of articular cartilage). Recent information supports a hypothesis that so-called primary osteoarthritis is also secondary to subtle developmental abnormalities and the mechanism in these cases is femoroacetabular impingement rather than excessive contact stress. The most frequent location for femoroacetabular impingemen...

Ganz, Reinhold; Leunig, Michael; Leunig-ganz, Katharina; Harris, William H.

2008-01-01

372

[Recommendations for sexual activity after total hip arthroplasty - review of the literature].  

Science.gov (United States)

Population is getting older and arthroplasty is getting more common. And the evolution of implants and their better longevity enables arthroplasty to be done for younger patients too. Therefore sexual activity with hip prosthesis is more common. Literature demonstrates a positive effect of total hip arthroplasty for sexual activity. Despite the euphoria due to painfree movement of the joint, the risk of a luxation of prosthesis should not be underestimated. Especially during the first three months after surgery this risk is relatively high. This also makes sexual activity - not only in this time period, a potential risk for hip dislocation. We do recommend written guidelines for patients to be given to them preoperatively. This will allow some privacy. PMID:20235041

Schmid, Rahel B; Kröll, Artur; Friederich, Niklaus F

2010-03-01

373

Current concepts and trends for operative treatment of FAI: hip arthroscopy.  

Science.gov (United States)

There has been an increasing body of literature regarding arthroscopic management of femoroacetabular impingement (FAI). Refinement of arthroscopic techniques has allowed for more complete management of FAI, and meta-analysis and systematic reviews have shown comparable outcomes to surgical hip dislocation with appropriate indications. There are still, however, pathomorphologies that are not accessible or much more challenging to address arthroscopically, and open corrective procedures should be considered in these situations. Extra-articular FAI is receiving increased attention and can be secondary to anterior inferior iliac spine/subspine impingement, trochanteric-pelvic impingement, and ischio-femoral impingement. Femoral and acetabular version and their impact on hip stability as well as the concept of impingement induced instability are being increasingly recognized. Acetabular labral and capsular management and repair techniques have also received increased attention. Finally, 3-dimensional imaging and dynamic software analysis are beginning to emerge as potential tools to better evaluate hip pathomorphology. PMID:23728614

Larson, Christopher M; Stone, Rebecca M

2013-09-01

374

Multiple congenital cranial hemangiomas  

Energy Technology Data Exchange (ETDEWEB)

Though cranial hemangiomas are second only to vertebral hemangiomas in frequency, such lesions are rarely congenital and multiple. It is probable that the true incidence of congenital calvarial hemangiomas is higher than that reported in the literature, as they are unlikely to undergo imaging, most being asymptomatic and without a significant soft tissue component. We present a case of multiple congenital calvarial and skull base cavernous-type hemangiomas, diagnosed in a 4-day-old female, involving the right zygoma, maxilla, frontal and petrous temporal bones and contralateral squamous temporal bone. Surgical biopsy confirmed the radiological diagnosis as well as the concomitant multiple subcutaneous capillary-type hemangiomas which were identified clinically. No specific clinical syndrome or chromosomal abnormality was identified and the underlying cerebral parenchyma was normal with no intra-axial involvement. With conservative treatment, two lesions completely resolved and a further two lesions subsequently decreased in both size and degree of enhancement. To the best of our knowledge, this is the first case of multiple congenital hemangiomas involving the calvarium and skull base. Despite this, the radiological features, combined with the clinical findings of multiple capillary hemangiomas, were characteristic enough to permit an accurate preoperative diagnosis. Osseous hemangiomas should feature prominently in any differential diagnosis of multiple hypervascular lesions, as they are common, more so when limited to an anatomical region, irrespective of site or age. (orig.)

Koulouris, George [Alfred Hospital, Department of Radiology, Prahran, Victoria (Australia); Rao, Padma [Royal Children' s Hospital, Department of Radiology, Parkville, Victoria (Australia)

2005-08-01

375

Congenital mitral stenosis  

Directory of Open Access Journals (Sweden)

Full Text Available Echocardiographic features of congenital mitral stenosis in a six year old female child is described. A significantly reduced ampli-tude of anterior mitral leaflet (8 mm. in early diastole suggested a tight mitral stenosis with moderate degree of hypoplasia of the left ventricle. Post-operatively echocardiogram was repeated; it was compared with the pre-operative echocardiogram.

Shah Lilam

1979-01-01

376

Congenital Lumbar Hernia  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Lumbar hernia is a rare hernia. It constitutes less than one percent of all abdominal hernias. It can becongenital or acquired. Acquired can occur either spontaneously or after surgery or trauma. Only 300cases of lumbar hernia are reported till date. We report a case of congenital lumbar hernia in one month oldmale baby

Sanjay Sharma; Gagan Bali; Satish Parihar; Neeraj Koul

2008-01-01

377

[Diagnosis of congenital infection].  

Science.gov (United States)

In general, congenital diagnosis is based on: a) maternal serologic assays; b) microbiologic study of amniotic fluid or fetal blood sampling; and c) serology in children and microorganism detection by polymerase chain reaction (PCR) or culture. Congenital infections due to cytomegalovirus, herpes simplex, varicella, B19 erythrovirus and toxoplasmosis are usually the result of primary infection in the mother. Therefore, when IgG antibodies are detected before pregnancy, these infections are ruled out. Definitive serologic diagnosis of acute infection in pregnant women requires the demonstration of seroconversion (i.e., from seronegative to seropositive). In these cases, amniotic fluid or fetal blood sampling should be performed to determine the presence of intrauterine congenital infection. Cytomegalovirus, rubella and toxoplasmosis can be diagnosed by detection of specific IgM antibodies in fetal blood. However, PCR in amniotic fluid has replaced conventional prenatal diagnostic techniques, including fetal blood sampling, in the diagnosis of these infections. In the newborn, these infections may be confirmed by measuring IgM specific antibodies. B19 erythrovirus can be detected by PCR in amniotic fluid or fetal blood. Congenital varicella-zoster infection may be diagnosed on the basis of persistence of IgG antibodies after birth. Definitive diagnosis of herpes simplex virus infection requires viral isolation. Swabs or scraping from clinical specimens can be inoculated into susceptible cell lines for isolation. PMID:22305665

Sampedro Martínez, Antonio; Martínez, Luis Aliaga; Teatino, Pablo Mazuelas; Rodríguez-Granger, Javier

2011-12-01

378

Birthmark (Congenital Melanocytic Nevus)  

Science.gov (United States)

... occurrence. Signs and Symptoms Congenital melanocytic nevi are brown or black, usually raised spots or patches, that are present at birth or ... and trunk, but lesions may occur on the face and extremities, and, least commonly, on the palms, soles, and ... Guidelines No activity or other restrictions ...

379

Congenital aggressive lipomatosis  

International Nuclear Information System (INIS)

Three cases of congenital lipomatosis involving the thoracic region posteriorly are presented delineating the natural history of the disease and depicting underlying bone and soft tissue changes. The rib widening and pleural thickening appear to be related to increased intercostal vascularity feeding the overlying tumor, as delineated by angiography. This entity is not described in the radiologic literature. (orig.)

380

An evaluation of surgical outcomes in luxation and subluxation of the hip joint in children with cerebral palsy.  

Science.gov (United States)

The goal of this work is to evaluate the suitability of the surgical operations used in severe forms of cerebral palsy with luxation or subluxation of the hips. The research involved 32 children with cerebral palsy and subluxation or luxation of the hip joint. 28 of these children had a severe form of quadriplega, and 4 had diplegia. In all cases, surgery was performed on the adductors, and in most cases on the bone system as well. Derotational-varizing osteotomies were performed 24 times, pelvic osteotomies using Dega's method 10 times, Salter's method seven times, Schanz's method 2 times, and triple pelvic osteotomy using Steele's method once. In three cases the femoral head was resected. The Salter and Dega osteotomies were evaluated as favorable in relation to the proper centering of the hip and securing it against renewed dislocation. On the other hand, over-correction of the increased neck-diaphysis angle caused a limitation in abduction, thus intensifying nursing difficulties. This method was evaluated particularly negatively in cases of pelvic tilt. In view of these outcomes in the surgical treatment of spastic hip luxations and subluxations, it would seem best to prevent dislocation by the appropriate rehabilitation and nursing procedures, and by early detection of dislocation. PMID:17679894

Faflik, Jakub; Bik, Krzysztof; Lipczyk, Zbigniew

2002-01-31

 
 
 
 
381

Modelling dislocation cores in Forsterite  

Science.gov (United States)

Olivine (Mg,Fe)2SiO4 is considered as the main constituent of the Earth's upper mantle (down to 410 km deep). The rheology of, and convection in, the upper mantle is therefore controlled by the deformation mechanisms of this mineral. Numerous experimental studies have been undertaken leading to a good description of the deformation mechanisms and rheological properties of this mineral at ambient pressure. However, recent studies have show that [001] glide is enhanced over [100] glide when pressure increases or when trace amounts of water are dissolved in the crystals. These observations have a lot of implications on our understanding of the rheology of the upper mantle and call for a more detailed description of the dislocation cores and dynamics. The Peierls-Nabarro (PN) model including generalized stacking fault energies is a privileged tool to calculate core structures at a remarkably low cost. Moreover, the PN model, which is usually restricted to the description of planar cores, is very adapted to look for the most mobile core configurations. However, dislocation cores may exhibit distinct, low-energy, configurations that are not described by the PN model. We present here new calculations based on full atomistic calculations (using the THB1 potential) and a method coupling Peierls-Nabarro and element-free Galerkin methods. These techniques expand the possibilities of previously reported calculations, in particular in permitting modeling 3D dislocation cores. We show that, [100] dislocations may exhibit non collinear dissociation in the (010) plane following the reaction [100] = 1/6[3 0 1] +1/6[3 0 -1]. We also discuss several possible core structures for [001] screw dislocations, including non-planar core spreadings.

Cordier, P.; Metsue, A.; Carrez, P.; Walker, A. M.; Denoual, C.; Mainprice, D.

2008-12-01

382

Medial subtalar dislocation: Case report  

Directory of Open Access Journals (Sweden)

Full Text Available Introduction. Subtalar dislocation (SI is a term that refers to an injury in which there is dislocation of the talonavicular and talocalcanear joint, although the tibiotalar joint is intact. Case Outline. A case of medial subtalar dislocation as a result of basketball injury, so-called 'basketball foot', is presented. Closed reposition in i.v. anaesthesia was performed with the patient in supine position and a knee flexed at 90 degrees. Longitudinal manual traction in line of deformity was carried out in plantar flexion. The reposition continued with abduction and eversion simultaneously increasing dorsiflexion. It was made in the first attempt and completed instantly. Rehabilitation was initiated after 5 weeks of immobilization. One year after the injury, the functional outcome was excellent with full range of motion and the patient was symptom-free. For better interpretation of roentgenogram, bone model of subtalar dislocation was made using the cadaver bone. Conclusion. Although the treatment of such injury is usually successful, diagnosis can be difficult because it is a rare injury, and moreover, X-ray of the injury can be confusing due to superposition of bones. Radiograms revealed superposition of the calcaneus, tarsal and metatarsal bones which was radiographically visualized in the anterior-posterior projection as one osseous block inward from the talus, and on the lateral view as in an osteal block below the tibial bone. Prompt recognition of these injuries followed by proper, delicately closed reduction under anaesthesia is crucial for achieving a good functional result in case of medial subtalar dislocation.

Manojlovi? Radovan

2010-01-01

383

Congenitally corrected transposition  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Congenitally corrected transposition is a rare cardiac malformation characterized by the combination of discordant atrioventricular and ventriculo-arterial connections, usually accompanied by other cardiovascular malformations. Incidence has been reported to be around 1/33,000 live births, accounting for approximately 0.05% of congenital heart malformations. Associated malformations may include interventricular communications, obstructions of the outlet from the morphologically left ventricle, and anomalies of the tricuspid valve. The clinical picture and age of onset depend on the associated malformations, with bradycardia, a single loud second heart sound and a heart murmur being the most common manifestations. In the rare cases where there are no associated malformations, congenitally corrected transposition can lead to progressive atrioventricular valvar regurgitation and failure of the systemic ventricle. The diagnosis can also be made late in life when the patient presents with complete heart block or cardiac failure. The etiology of congenitally corrected transposition is currently unknown, and with an increase in incidence among families with previous cases of congenitally corrected transposition reported. Diagnosis can be made by fetal echocardiography, but is more commonly made postnatally with a combination of clinical signs and echocardiography. The anatomical delineation can be further assessed by magnetic resonance imaging and catheterization. The differential diagnosis is centred on the assessing if the patient is presenting with isolated malformations, or as part of a spectrum. Surgical management consists of repair of the associated malformations, or redirection of the systemic and pulmonary venous return associated with an arterial switch procedure, the so-called double switch approach. Prognosis is defined by the associated malformations, and on the timing and approach to palliative surgical care.

Debich-Spicer Diane

2011-05-01

384

Differences in hip bone mineral density may explain the hip fracture pattern in osteoarthritic hips  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Introduction In patients with osteoarthritis of the hip (OAH), trochanteric fractures are much more common than femoral neck fractures. One reason may be altered bone composition in the proximal femurs. OAH often leads to a fixed external rotation of the hip, leading to difficulties in positioning during DXA measurements. We compared BMD in OAH-affected legs and healthy legs. Patients and methods 40 patients with strictly unilateral OAH were cross-sectionally investigated with DXA at the hips...

Wolf, Olof; Stro?m, Ha?kan; Milbrink, Jan; Larsson, Sune; Mallmin, Hans

2009-01-01

385

Dislocations and mechanical properties of icosahedral quasicrystals  

Science.gov (United States)

In this article we interpret the mechanical properties of icosahedral quasicrystals with the dislocation theory. After having defined the concept of dislocation in a periodic crystal, we extend this notion to quasicrystals in the 6-dimensional space. We show that perfect dislocations and imperfect dislocations trailing a phason fault can be defined and observed in transmission electron microscopy (TEM). In-situ straining TEM experiments at high temperature show that dislocations move solely by climb, a non-conservative motion-requiring diffusion. This behavior at variance with that of crystals which deform mainly by glide is explained by the atypical nature of the atomic structure of icosahedral quasicrystals.

Mompiou, Frédéric; Caillard, Daniel

2014-01-01

386

Complications of revision hip arthroplasty using fresh bone allografts  

Directory of Open Access Journals (Sweden)

Full Text Available General and specific complications of revision hip arthroplasty using fresh bone allografts may affect the postoperative functional outcome to different extent. The aim of this paper was to estimate the incidence and types of intraoperative and early postoperative complications after revision hip arthroplasty, and to clinically and radiographically evaluate their influence on the final postoperative outcome. The most frequent general intraoperative complications were: femoral fracture (6.7% and lesion of the superior gluteal artery. Anterior dislocation of the prosthesis (6.7% and superficial infection (3.3% were the two most frequent early postoperative complications. Of all general complications taken into account, femoral fracture, either intra or postoperative, has the worst prognosis. Bone allograft resorption, as the only specific complication encountered in this study, has a bad prognosis only if it is very extensive. The use of fresh bone allografts, prepared in a special manner, is clinically safe for revision total hip arthroplasty, if a bone bank is not available. .

Miljkovi? Nataša

2007-01-01

387

Indirect lateral surgical approach modified in hip arthroplasty  

International Nuclear Information System (INIS)

The authors show an another option to the surgical approach to the hip, a lateral indirect modified (ALIM) for the partial or total arthroplasty of primary hip replacement and for revision (RTC), in a retrospective study, series of cases, with average was 7,75 years of follow up (range 6 months-10 years); quick access, easy technically, provide a good orientation of the components of the placement of implants, and allow an excellent exhibition for the complex problems of the reconstruction of the acetabular and the femur. Leaves intact the greater trochanter, improving the rotational stability that is needed in its femoral implant, doesn't injured the gluteus medius and doesn't produces his deficit, reduce the time for the deambulation. This approach is designed for primary cases and complex cases of revision using the mini-incision, with better exposition and less morbid-mortality associated to the surgical technique due to the less bleeding, less incidence of dislocation, thromboembolism and infection because of the little damage and better control of the surrounding soft tissue; better stability, no paralysis or lesion of the sciatic or femoral nerve without incidence of heterotopic ossifications with a better range of external rotation in extension of the hip that with traditional approach of Hardinge, and greater versatility in its indications

388

A Rare Dislocation: Isolated Proximal Tibiofibular Joint Dislocation  

Directory of Open Access Journals (Sweden)

Full Text Available Isolated dislocation of proximal tibiofibular joint is one of the rarely encountered and easily overlooked traumas in ER departments. Injury mechanism can not be elucidated entirely; however it occurs commonly by sudden inversion of foot, concurrently knee is at flexion and foot is at plantar flexion. Diagnosis can be made by determining swelling and sensitivity increase at proximal tibia with comparing healthy side and radiological imaging techniques. Treatment is still a challenging and controversial issue and most of the cases are approached conservatively; for selected cases, it is possible to carry out surgical stabilization. We have reported the case, an isolated dislocation of the proximal tibiofibular joint in a football player.

ibrahim Arziman

2011-09-01

389

Evolution of geometrically necessary dislocation density from computational dislocation dynamics  

International Nuclear Information System (INIS)

This paper presents a method for calculating GND densities in dislocation dynamics simulations. Evolution of suitably defined averages of GND density as well as maps showing the spatial nonuniform distribution of GNDs are analyzed under uniaxial loading. Focus is laid on the resolution dependence of the very notion of GND density, its dependence upon physical dimensions of plastically deformed specimens and its sensitivity to initial conditions. Acknowledgments Support from the National Science Foundation (CMMI-0748187) is gratefully acknowledged.

390

Evolution of geometrically necessary dislocation density from computational dislocation dynamics  

Science.gov (United States)

This paper presents a method for calculating GND densities in dislocation dynamics simulations. Evolution of suitably defined averages of GND density as well as maps showing the spatial nonuniform distribution of GNDs are analyzed under uniaxial loading. Focus is laid on the resolution dependence of the very notion of GND density, its dependence upon physical dimensions of plastically deformed specimens and its sensitivity to initial conditions. Acknowledgments Support from the National Science Foundation (CMMI-0748187) is gratefully acknowledged.

Guruprasad, P. J.; Benzerga, A. A.

2009-07-01

391

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... with this material in the hip and the knee joints. Now I'm going to impact it in place. 00:27:01 PIETER J. HOMMEN, MD: You can see, orthopedics is a little bit of a manual type procedure. The recovery after a hip arthroscopy is a little bit different also. If you ...

392

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... six times body weight, and in a regular person, during walking, the patient will actually have anywhere between two to four times body weight on the hip. The hip can get quite sick from a number of diseases, including sports injuries. And I'm ...

393

Small Incision Total Hip Arthroplasty  

Medline Plus

Full Text Available ... common depending on the type of sports that patients are involved in, anywhere from golf to contact sports like football and hockey. There is an ... the predictability, the chances of getting a good result -- meaning 20 years from now, the chances of this patient having this hip in his hip and being ...

394

Effect of Hip Angle on Anterior Hip Joint Force during Gait  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Anterior hip or groin pain is a common complaint for which people are referred for physical therapy. We have observed that people with anterior hip pain often walk in greater hip extension than people without anterior hip pain, and that the pain is reduced when they walk in less hip extension. Therefore, we investigated anterior hip joint forces which may contribute to anterior hip pain and examined the effect of end range hip extension on the anterior hip joint force during gait. To do this,...

Lewis, Cara L.; Sahrmann, Shirley A.; Moran, Daniel W.

2010-01-01

395

Transient Osteoporosis of the Hip  

Directory of Open Access Journals (Sweden)

Full Text Available Transient osteoporosis of the hip is often seen in middle-aged men and in women during the third trimester of pregnancy and is characterized by acute, spontaneous hip pain. In suspected cases magnetic resonance imaging shows bone marrow edema within 48 hours from the onset of pain. Transient osteoporosis is a diagnosis of exclusion and differential diagnosis with other diseases presented with hip pain and bone marrow edema should be considered. Although it is a self limiting condition it must be kept in mind that it may migrate and involve other joints in the lower extremities like knee, ankle and contralateral hip. The cornerstone of treatment is joint protection and limited weight bearing and antiresorptive medication may be of benefit. This review summarizes conditions defined with the terms of transient osteoporosis of the hip, migratory osteoporosis, pregnancy induced osteoporosis and transient bone marrow edema syndrome. Turk J Phys Med Rehab 2009; 55 Suppl 1: 41-5.

Rengin Güzel

2009-04-01

396

4 HOMEBOYS : Hip hop -musiikin korukulttuuri ja kulttuurihistoria & suomalainen hip hop -genre korumuotoilun kohderyhmänä  

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Käsittelen opinnäytetyössäni hip hopin korukulttuuria sekä globaalisti että Suomen mittakaavassa. Tutkimuksellisempi puoli käsittelee suomalaisen hip hopin historiaa, arvopohjaa ja korunkäyttöä. Halusin luoda korun suomalaiselle hip hop -skenelle ja -käyttäjälle. Kirjallisen osion ja kuva-aineiston kautta käsittelin hip hopin kulttuurihistoriaa, korukulttuuria ja bling bling -ilmiötä. Tarkastelin myös hieman suomalaisen hip hop -skenen korunkulttuuria ja korumarkkinoita. ...

Joki, Eini

2010-01-01

397

Congenital club foot  

Directory of Open Access Journals (Sweden)

Full Text Available Congenital club foot is the most frequent foot deformity. It occurs in 1% of newborns, two times more frequently in boys, with family inheritance. Patoanatomicaly, entity consists of bone deformities, articular malpositions and soft tissues retraction. All these produce adduction of the forefoot and varus and equinovarus of the hindfoot. Lateral side of the foot is convex and medial side is concave. Forefoot is in adduction and plantar flexion in relation to the hindfoot. The heel is rotated medially which induces varus and eqinus of the foot. The aim of the treatment is to establish anatomically normal foot, painless, with moderate movements, which is suitable for normal shoes. At the beginning treatment is nonsurgical. If nonsurgical treatment fails further step should be surgical treatment. The success of treatment of congenital clubfoot depends on the time of diagnosis and treatment beginning.

Baš?arevi? V.D.

2010-01-01

398

[Congenital radioulnar synostosis].  

Science.gov (United States)

Congenital radio-ulnar synostosis is a rare condition with approximately 350 cases reported in the literature. The condition is due to the failure of segmentation between the radius and ulna. The rarity of the condition often leads to delayed clinical diagnosis. Average age at diagnosis is 6 years, and ranges from 6 months to 22 years. The sexes are affected 3-2 male/female and 60% of cases are bilateral. Functional deficits with congenital radio-ulnar synostosis depend on the severity of the deformity and on whether or not it is bilateral. The disability is most significant in bilateral cases with severe pronation. Children initially may have reduced radial heads and later develop symptomatic radial head subluxation as adolescents. Therefore, they must be followed-up radiographically. Indications for surgery still remain somewhat controversial but are related to bilaterality and the degree of deformity. PMID:18823611

Al-Saadi, Zaid Saadi Abdullah; Havekrog, Bettina Haar

2008-09-29

399

Congenital nephrotic syndrome  

Directory of Open Access Journals (Sweden)

Full Text Available CNS (Congenital nephrotic syndrome is a disorder characterized by the presence of a nephrotic syndrome in the first three months of life. Different pathologies can cause this syndrome. In general, we can distinguish primary forms (sporadic and hereditary and secondary forms (acquired and associated with other syndromes. The most common form is the Finnish CNS (CNF, congenital nephrotic syndrome of the Finnish type, a hereditary form whose name derives from the fact that the highest incidence is described in that country (1.2:10,000. The pathogenesis, the clinical picture, the diagnostic criteria, the therapy and the outcome are described in details.  Proceedings of the International Course on Perinatal Pathology (part of the 10th International Workshop on Neonatology · October 22nd-25th, 2014 · Cagliari (Italy · October 25th, 2014 · The role of the clinical pathological dialogue in problem solving Guest Editors: Gavino Faa, Vassilios Fanos, Peter Van Eyken

Claudia Fanni

2014-06-01

400

Congenital diaphramatic hernia  

International Nuclear Information System (INIS)

Congenital diaphragmatic hernia, despite advances in therapy, remains a complex condition with significant morbidity and mortality. The etiology of the disorder is still incompletely understood, though the pulmonary hypoplasia and pulmonary hypertension that develop secondarily must be overcome to improve survival. Prenatal US and fetal MRI have helped in the development of a greater understanding of this disease. Also with these modalities, measurement techniques have been developed in an attempt to provide prognosticators for the development of pulmonary hypoplasia and pulmonary hypertension. There is a broad range of approaches for performing these measurements, and variability among imaging centers is noted. Despite inconsistent approaches, these techniques have become the foundation for counseling and prenatal and postnatal therapy. It is hoped that with further research with prenatal US and fetal MRI and the development of innovative medical and surgical therapies that the morbidity and mortality of children with congenital diaphragmatic hernias can be significantly reduced. (orig.)

 
 
 
 
401

Congenital pulmonary lymphangiectasis.  

Science.gov (United States)

Congenital pulmonary lymphangiectasis (CPL) is a rare vascular malformation causing dilated lymph vessels and disturbed drainage of lymph fluid. Based on the pathogenesis and clinical phenotype it can be classified as primary or secondary CPL. Associated genetic syndromes with or without lymphedema, familial occurrence and gene mutations have been described. In utero, it may present as non-immune hydrops with pleural effusions. At birth neonates may have respiratory failure due to chylothorax and pulmonary hypoplasia, causing very high short term mortality rates. Other cases may become symptomatic any time later in childhood or even during adult life. CPL is usually diagnosed based on the combination of clinical signs, imaging and histological findings. Open-lung biopsy is considered the gold standard for the diagnosis of CPL. Treatment is primarily supportive featuring aggressive mechanical ventilation and the management of problems associated with congenital chylothorax including chest-drainage, medium-chain triglycerides (MCT) diet, and octreotide. PMID:24997116

Reiterer, Friedrich; Grossauer, Karin; Morris, Nicholas; Uhrig, Sabine; Resch, Bernhard

2014-09-01

402

Congenital intestinal lymphangiectasia  

Directory of Open Access Journals (Sweden)

Full Text Available Background. Congenital intestinal lymphangiectasia is a disease which leads to protein losing enteropathy. Tortous, dilated lymphatic vessels in the intestinal wall and mesenterium are typical features of the disease. Clinical manifestations include malabsorption, diarrhea, steatorrhea, edema and effusions. Specific diet and medication are required for disease control. Case report. A 19-year old male patient was hospitalized due to diarrhea, abdominal swelling, weariness and fatigue. Physical examination revealed growth impairment, ascites, and lymphedema of the right hand and forearm. Laboratory assessment indicated iron deficiency anaemia, lymphopenia, malabsorption, inflammatory syndrome, and urinary infection. Enteroscopy and video capsule endoscopy demonstrated dilated lymphatic vessels in the small intestine. The diagnosis was confirmed by intestinal biopsy. The patient was put on high-protein diet containing medium-chain fatty acids, somatotropin and suportive therapy. Conclusion. Congenital intestinal lymphangiectasia is a rare disease, usually diagnosed in childhood. Early recognition of the disease and adequate treatment can prevent development of various complications.

Popovi? Dušan ?.

2011-01-01

403

Congenital diaphramatic hernia  

Energy Technology Data Exchange (ETDEWEB)

Congenital diaphragmatic hernia, despite advances in therapy, remains a complex condition with significant morbidity and mortality. The etiology of the disorder is still incompletely understood, though the pulmonary hypoplasia and pulmonary hypertension that develop secondarily must be overcome to improve survival. Prenatal US and fetal MRI have helped in the development of a greater understanding of this disease. Also with these modalities, measurement techniques have been developed in an attempt to provide prognosticators for the development of pulmonary hypoplasia and pulmonary hypertension. There is a broad range of approaches for performing these measurements, and variability among imaging centers is noted. Despite inconsistent approaches, these techniques have become the foundation for counseling and prenatal and postnatal therapy. It is hoped that with further research with prenatal US and fetal MRI and the development of innovative medical and surgical therapies that the morbidity and mortality of children with congenital diaphragmatic hernias can be significantly reduced. (orig.)

Kline-Fath, Beth M. [Cincinnati Children' s Hospital Medical Center, Department of Radiology, Fetal Care Center of Cincinnati, Cincinnati, OH (United States); Cincinnati Children' s Hospital Medical Center, Department of Radiology, MLC 5031, Cincinnati, OH (United States)

2012-01-15

404

Congenital portosystemic vascular malformations.  

Science.gov (United States)

Congenital portosystemic shunts are developmental abnormalities of the portal venous system resulting in the diversion of portal blood away from the liver to the systemic venous system. Such malformations are believed to come from an insult occurring between the fourth and eighth week of gestation during the development of hepatic and systemic venous systems, and could explain their frequent association with cardiac and other vascular anomalies. They are currently categorized into end-to-side shunts (type I) or side-to-side shunts (type II). This article aims to review the common symptoms and complications encountered in congenital portosystemic shunts, the surgical and endovascular treatment, and the role of liver transplantation in this disease. We will also focus on the current controversies and the areas where there is potential for future studies. PMID:22800976

Guérin, Florent; Blanc, Thomas; Gauthier, Frédéric; Abella, Stephanie Franchi; Branchereau, Sophie

2012-08-01

405

CONGENITAL ANTERIOR TIBIOFEMURAL SUBLUXATION  

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Congenital anterior tibiofemoral subluxation is an extremely rare disorder. All reported cases accompanied by other abnormalities and syndromes. A 16-year-old high school girl referred to us with bilateral anterior tibiofemoral subluxation as the knees were extended and reduced at more than 30 degrees flexion. Deformities were due to tightness of the iliotibial band and biceps femuris muscles and corrected by surgical release. Associated disorders included bilateral anterior shoulders disloca...

Shahla, A.

2008-01-01

406

Congenital Diaphragmatic Hernia  

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Abstract Congenital Diaphragmatic Hernia (CDH) is defined by the presence of an orifice in the diaphragm, more often left and posterolateral that permits the herniation of abdominal contents into the thorax. The lungs are hypoplastic and have abnormal vessels that cause respiratory insufficiency and persistent pulmonary hypertension with high mortality. About one third of cases have cardiovascular malformations and lesser proportions have skeletal, neural, genitourinary, gastrointes...

Tovar Juan A

2012-01-01

407

Congenital adrenal hyperplasia.  

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Congenital adrenal hyperplasia consists of a heterogenous group of inherited disorders due to enzymatic defects in the biosynthetic pathway of cortisol and/or aldosterone. This results in glucocorticoid deficiency, mineralocorticoid deficiency, and androgen excess. 95% of CAH cases are due to 21-hydroxylase deficiency. Clinical forms range from the severe, classical CAH associated with complete loss of enzyme function, to milder, non-classical forms (NCAH). Androgen excess affe...

Raiti, S.; Newns, G. H.

2003-01-01

408

Congenital ocular motor apraxia  

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PURPOSE: Congenital ocular motor apraxia is a rare disease characterized by defective or absent voluntary and optically induced horizontal saccadic movements. Jerky head movements or thrusts on attempted lateral gaze are a compensatory sign. Most affected children have delayed motor and speech development. Cases associated with systemic diseases, neurologic maldevelopment, metabolic deficits, and chromosomal abnormalities have been described. METHODS: Case report and review of the scienti...

Carrasquinho, S.; Teixeira, S.; Cadete, A.; Bernardo, M.; Pe?go, P.; Prieto, I.

2008-01-01

409

Congenital scoliosis - Quo vadis?  

Directory of Open Access Journals (Sweden)

Full Text Available Congenital spinal vertebral anomalies can present as scoliosis or kyphosis or both. The worldwide prevalence of the vertebral anomalies is 0.5-1 per 1000 live births. Vertebral anomalies can range from hemi vertebrae (HV which may be single or multiple, vertebral bar with or without HV, block vertebrae, wedge shaped or butterfly vertebrae. Seventy per cent of congenital vertebral anomalies result in progressive deformities. The risk factors for progression include: type of defect, site of defect (junctional regions and patient?s age at the time of diagnosis. The key to success in managing these spinal deformities is early diagnosis and anticipation of progression. One must intervene surgically to halt the progression of deformity and prevent further complications associated with progressive deformity. Planning for surgery includes a preoperative MRI scan to rule out spinal anomalies such as diastematomyelia. The goals of surgical treatment for congenital spinal deformity are to achieve a straight growing spine, a normal standing sagittal profile, and a short fusion segment. The options of surgery include in situ fusion, convex hemi epiphysiodesis and hemi vertebra excision. These basic surgical procedures can be combined with curve correction, instrumentation and short segment fusion. Most surgeons prefer posterior (only surgery for uncomplicated HV excision and short segment fusion. These surgical procedures can be performed through posterior, anterior or combined approaches. The advocates of combined approaches suggest greater deformity correction possibilities with reduced incidence of pseudoarthrosis and minimize crankshaft phenomenon. We recommend posterior surgery for curves involving only an element of kyphosis or modest deformity, whereas combined anterior and posterior approach is indicated for large or lordotic deformities. In the last decade, the use of growing rods and vertebral expandable prosthetic titanium rib has improved the armamentarium of the spinal surgeon in dealing with certain difficult congenital spinal deformities. The goal of growing rod treatment is to provide simultaneous deformity correction and allow for continued spinal growth. Once maximal spinal growth has been achieved, definitive fusion and instrumentation is performed.

Debnath Ujjwal

2010-01-01

410

Congenital nephrotic syndrome  

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Congenital nephrotic syndrome (CNS) is a rare kidney disorder characterized by heavy proteinuria, hypoproteinemia, and edema starting soon after birth. The majority of cases are caused by genetic defects in the components of the glomerular filtration barrier, especially nephrin and podocin. CNS may also be a part of a more generalized syndrome or caused by a perinatal infection. Immunosuppressive medication is not helpful in the genetic forms of CNS, and kidney transplantation is the only cur...

Jalanko, Hannu

2009-01-01

411

Lattice dislocation in Si nanowires  

Energy Technology Data Exchange (ETDEWEB)

Modified formulas were used to calculate lattice thermal expansion, specific heat and Bulk modulus for Si nanowires with diameters of 115, 56, 37 and 22 nm. From these values and Gruneisen parameter taken from reference, mean lattice volumes were found to be as 20.03 A{sup 3} for the bulk and 23.63, 29.91, 34.69 and 40.46 A{sup 3} for Si nanowire diameters mentioned above, respectively. Their mean bonding length was calculated to be as 0.235 nm for the bulk and 0.248, 0.269, 0.282 and 0.297 nm for the nanowires diameter mentioned above, respectively. By dividing the nanowires diameter on the mean bonding length, number of layers per each nanowire size was found to be as 230, 104, 65 and 37 for the diameters mentioned above, respectively. Lattice dislocations in 22 nm diameter wire were found to be from 0.00324 nm for the 1st central lattice to 0.2579 nm for the last surface lattice. Such dislocation was smaller for larger wire diameters. Dislocation concentration found to change in Si nanowires according to the proportionalities of surface thickness to nanowire radius ratios.

Omar, M.S., E-mail: dr_m_s_omar@yahoo.co [Department of Physics, College of Science, University of Salahaddin, Arbil, Iraqi Kurdistan (Iraq); Taha, H.T. [Department of Physics, College of Science, University of Salahaddin, Arbil, Iraqi Kurdistan (Iraq)

2009-12-15

412

Lattice dislocation in Si nanowires  

International Nuclear Information System (INIS)

Modified formulas were used to calculate lattice thermal expansion, specific heat and Bulk modulus for Si nanowires with diameters of 115, 56, 37 and 22 nm. From these values and Gruneisen parameter taken from reference, mean lattice volumes were found to be as 20.03 A3 for the bulk and 23.63, 29.91, 34.69 and 40.46 A3 for Si nanowire diameters mentioned above, respectively. Their mean bonding length was calculated to be as 0.235 nm for the bulk and 0.248, 0.269, 0.282 and 0.297 nm for the nanowires diameter mentioned above, respectively. By dividing the nanowires diameter on the mean bonding length, number of layers per each nanowire size was found to be as 230, 104, 65 and 37 for the diameters mentioned above, respectively. Lattice dislocations in 22 nm diameter wire were found to be from 0.00324 nm for the 1st central lattice to 0.2579 nm for the last surface lattice. Such dislocation was smaller for larger wire diameters. Dislocation concentration found to change in Si nanowires according to the proportionalities of surface thickness to nanowire radius ratios.

413

The heart: Congenital disease  

International Nuclear Information System (INIS)

The most important diagnostic requirement in congenital heart disease (CHD) is definition of cardiovascular pathoanatomy. The considerable success in operative correction of even the most complex anomalies in recent years compels ever increasing precision in preoperative demonstration of these anomalies. Early experience with magnetic resonance imaging (MRI) at several institutions indicated that this modality is an effective noninvasive technique for evaluation of CHD. Indeed, MRI seems to have some advantage over other techniques, including angiography, for definitive diagnosis of congenital anomalies of the heart and great arteries and veins. The absence of ionizing radiation and contrast medium in MRI is an additional advantage; the former is particularly important for children, who, up to this time, have frequently been subjected to enormous radiation burdens from multiple cineangiograms during initial diagnosis and follow-up. This chapter describes the MRI appearance of cardiovascular anatomy im the segmental fashion proposed for analysis of complex CHD. Likewise, MRI demonstration of congenital cardiovascular lesions is organized into abnormalities situated at the four segmental cardiovascular levels: great vessels, atria, ventricles, and visceroatrial relationship. The role of MRI in evaluation of complex ventricular anomalies such as single ventricle and thoracic aortic abnormalities is specifically described

414

[Congenital and perinatal infections  

Science.gov (United States)

OBJECTIVE: To review current information about congenital and perinatal infections, mainly related to their epidemiology in Brazil, mother-to-infant transmission, diagnosis, treatment and prevention. Particular aspects related to the agents T. pallidum, hepatitis B virus, human immunodeficiency virus, cytomegalovirus and T. gondii were considered. METHODS: The main published papers from the last 10 years were selected from a Medline database electronic search. RESULTS: Congenital or perinatal infections can occur in up to 10% of newborns. Although there are few Brazilian studies, available data suggest their relevance, mainly related to the occurrence of infection due to T. pallidum, HIV and CMV. At least 50% of the infected newborns are asymptomatic. However, because these infections may lead to long term sequelae, it is necessary to early identify infected pregnant women in order to implement specific preventive measures. Presently, laboratory methods for early diagnosis of fetal or neonatal infections are available. They are predominantly based on assays for detection of IgA or IgM specific antibodies and fragments of the microorganism nucleic acids by polymerase chain reaction. The available treatments had only limited success, because they often have failed to substantially modify the prognosis for infected infants. New treatments and outcome studies are needed. CONCLUSIONS: Congenital and perinatal infections are a relevant problem whose main current advances are related to prevention and laboratory diagnostic methods applicable to pregnant women, fetus or infants. PMID:14685480

Mussi-Pinhata, M M; Yamamoto, A Y

1999-07-01

415

Dislocation detection algorithm for atomistic simulations  

International Nuclear Information System (INIS)

We present a novel computational method that makes it possible to directly extract dislocation lines and their associated Burgers vectors from three-dimensional atomistic simulations. The on-the-fly dislocation detection algorithm is based on a fully automated Burgers circuit analysis, which locates dislocation cores and determines their Burgers vector. Through a subsequent vectorization step, the transition from the atomistic system to a discrete dislocation representation is achieved. Using a parallelized implementation of the algorithm, the dislocation analysis can be efficiently performed on the fly within a molecular dynamics simulation. This enables the visualization and investigation of dislocation processes occurring on sub-picosecond time scales, whose observation is otherwise impeded by the presence of other crystal defects or simply by the huge amount of data produced by large-scale atomistic simulations. The presented method is able to identify individual segments as well as networks of perfect, partial and twinning dislocations. The dislocation density can be directly determined and even more sophisticated information is made accessible by our dislocation analysis, including dislocation reactions and junctions, as well as stacking fault and twin boundary densities

416

Radiology of congenital heart disease  

International Nuclear Information System (INIS)

This is a text on the radiologic diagnosis of congenital heart disease and its clinical manifestations. The main thrust of the book is the logical approach which allows an understanding of the complex theory of congenital heart disease. The atlas gives a concise overview of the entire field of congenital heart disease. Emphasis is placed on the understanding of the pathophysiology and its clinical and radiological consequences. Surgical treatment is included since it provides a different viewpoint of the anatomy

417

Congenital Cytomegalovirus Infection: Audiologic Outcome  

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The association between congenital cytomegalovirus (CMV) infection and sensorineural hearing loss (SNHL) was first described almost 50 years ago. Studies over the intervening decades have further described the relationship between congenital CMV infection and SNHL in children. However, congenital CMV infection remains a leading cause of SNHL in children in the United States and the world today. As more CMV infections are identified, it is important to recognize that infants who are born to se...

Fowler, Karen B.

2013-01-01

418

[Postoperative management of hip and knee endoprostheses].  

Science.gov (United States)

Rheumatoid arthritis is often accompanied by massive destruction of the smaller and larger joints even with early therapy using antirheumatic drugs. In these cases total joint arthroplasty is the only surgical option, especially for the knee and hip joint. Knowledge of the specific disease-related postoperative characteristics is a prerequisite for the successful treatment of patients with rheumatoid arthritis. As dislocation of the arthroplastic joint does not occur more often in rheumatoid arthritis, the risk of periprosthetic infection is increased due to the use of biologicals. Therefore, a perioperative optimization is obligatory. In order to facilitate independence in daily living physiotherapy in combination with aids such as arthritis crutches, gripping pliers or raised toilet seat need to be started as soon as possible after surgical treatment. To achieve this goal it is recommended to refer patients with inflammatory arthritis to inpatient rehabilitation facilities. With respect to the specific postoperative treatment after joint replacement the long-term results are comparable with those from patients with primary osteoarthritis. PMID:23052557

Seitz, S; Rüther, W

2012-10-01

419

Genetics Home Reference: Congenital stromal corneal dystrophy  

Science.gov (United States)

... literature OMIM Genetic disorder catalog Conditions > Congenital stromal corneal dystrophy On this page: Description Genetic changes Inheritance ... definitions Reviewed August 2009 What is congenital stromal corneal dystrophy? Congenital stromal corneal dystrophy is an inherited ...

420

Genetics Home Reference: Congenital diaphragmatic hernia  

Science.gov (United States)

... literature OMIM Genetic disorder catalog Conditions > Congenital diaphragmatic hernia On this page: Description Genetic changes Inheritance Diagnosis ... definitions Reviewed September 2013 What is congenital diaphragmatic hernia? Congenital diaphragmatic hernia is a defect in the ...

 
 
 
 
421

Genetic Counseling for Congenital Heart Defects  

Science.gov (United States)

Genetic Counseling for Congenital Heart Defects Updated:Jan 8,2015 When a child is born with a congenital ... person with congenital heart disease considers having children. Genetic counseling can help answer these questions and address your ...

422

Plane-strain discrete dislocation plasticity with climb-assisted glide motion of dislocations  

International Nuclear Information System (INIS)

A small-strain two-dimensional discrete dislocation plasticity (DDP) framework is developed wherein dislocation motion is caused by climb-assisted glide. The climb motion of the dislocations is assumed to be governed by a drag-type relation similar to the glide-only motion of dislocations: such a relation is valid when vacancy kinetics is either diffusion limited or sink limited. The DDP framework is employed to predict the effect of dislocation climb on the uniaxial tensile and pure bending response of single crystals. Under uniaxial tensile loading conditions, the ability of dislocations to bypass obstacles by climb results in a reduced dislocation density over a wide range of specimen sizes in the climb-assisted glide case compared to when dislocation motion is only by glide. A consequence is that, at least in a single slip situation, size effects due to dislocation starvation are reduced. By contrast, under pure bending loading conditions, the dislocation density is unaffected by dislocation climb as geometrically necessary dislocations (GNDs) dominate. However, climb enables the dislocations to arrange themselves into lower energy configurations which significantly reduces the predicted bending size effect as well as the amount of reverse plasticity observed during unloading. The results indicate that the intrinsic plasticity material length scale associated with GNDs is strongly affected by thermally activated processes and will be a function of temperature. (paper)

423

Effect of HIP Temperature on Microstructure and Creep Property of FGH95 Alloy  

Science.gov (United States)

By means of hot isostatic pressing (HIP) treatment, microstructure observation and creep properties measurement, the effects of the HIP temperatures on the microstructure and creep properties of FGH95 nickel-base superalloy are investigated. The results show that, when the HIP temperature is lower than solubility of ?' phase, the coarser ?' phase is precipitated in the previous particle boundary (PPB) regions, and the quantity and size of the coarser ?' phase which is distributed in the regions decrease as the HIP temperature increases. No feature of the grain growing up is detected after the alloy is solution treated at 1140 °C. Moreover, there are a few of carbide particles distributing along the grain boundary and in the grain. After HIP treated at 1180 °C and fully heat treated, coarser ?' phase is dissolved in the alloy, and the depleted zone of the fine ?' phase has disappeared. In addition, the grains grow up obviously in the alloy, and the ?' phase and fine carbide particles are dispersedly precipitated in the grains and along boundaries, which can enhance the creep resistance of the alloy. The deformation mechanisms of the alloy are that the dislocations slip in the matrix or shear into ?' phase during creep.

Xie, Jun; Tian, Su-Gui; Zhou, Xiao-Ming

2012-02-01

424

Fully hydroxyapatite-coated total hip replacement: ten-year results.  

Science.gov (United States)

We assess 254 consecutive primary total hip replacements (THRs) using a fully hydroxyapatite (HA)-coated stem and socket (Furlong; JRI, London, UK). Minimum follow-up was 10 years. Harris hip score (HHS) increased from 49.8 preoperatively to 86.2 at follow-up. The most remarkable clinical finding was the near absence of thigh pain. After 10 years of follow-up, all stems met stability criteria and none needed revision for aseptic loosening. Three cups (1.2%) were revised for aseptic loosening. Two more cups were revised for recidivant dislocation. Varus placement of the femoral stem was present in 63 hips (24.8%) and valgus in 13 hips (5%). None of these technical defects showed radiologic progression, and there was no measurable correlation between them and the clinical score. Intraoperative femoral fractures occurred in 25 cases (9.8%) with no further influence on implant evolution. These findings strongly support the use of the JRI Furlong system for primary THR because it provides excellent clinical and radiologic results, with 0% and 1.2% cup and stem aseptic loosening, respectively, at 10 years. In addition, its tolerance to technical implantation defects makes it suitable even for less experienced hip surgeons. PMID:20512777

Valera Pertegàs, Màrius; Vergara-Valladolid, Pedro; Crusi-Sererols, Xavier; Sancho-Navarro, Rogelio

2010-01-01

425

Outcomes of Dual Modular Cementless Femoral Stems in Revision Hip Arthroplasty  

Science.gov (United States)

With an increasing number of primary hip replacements being performed every year, the burden of revision hip arthroplasty, for septic and aseptic loosening, recurrent dislocation or periprosthetic fracture, is also increasing. In recent years, different approaches to revising the femoral prosthesis have emerged; including both cemented and cementless techniques. With a stable cement mantle and good bone quality, or through the use of impaction bone grafting when bone stock is lacking, it is possible to re-cement a femoral prosthesis. Alternatively, a cementless modular femoral prosthesis may be used, providing the surgeon with further options for restoring leg length, hip offset, anteversion and stability. Studies evaluating the use of modular cementless prostheses have so far been limited to midterm studies, with results comparable to primary hip arthroplasty. There are some concerns, however, regarding tribological complications such as stem fracture, corrosion, and failure, and long-term studies are required to further evaluate these concerns. This review outlines the current evidence for the use of both cemented and cementless modular femoral prostheses in the setting of revision hip arthroplasty. Results of prospective and retrospective studies will be outlined, along with results obtained from national joint registries. PMID:24822088

Broadhead, Matthew L.; Morley, John; Tavares, Shawn; McDonald, David

2014-01-01

426

Effects of dislocations on electron channeling  

International Nuclear Information System (INIS)

The phenomenon of electron channeling in a crystal affected by dislocations is considered. Earlier we had considered the quantum aspects of the positron channeling in a crystal bent by dislocations where the effects of longitudinal motion of the particle were also considered along with the transverse motion. In this paper, the effective potential for the electron case is found for the two regions of dislocation-affected channel. There is considerable shift in the potential minima due to dislocations. The frequency and the corresponding spectrum of the channeling radiation due to electrons channeling through the perfect channel and the two regions of dislocation-affected channels are calculated. The spectral distribution of radiation intensity changes with the parameters of dislocation. The continuity of wavefunctions and their derivatives is used at the three boundaries and the reflection and transmission coefficients are found using these boundary conditions in the same way as in the positron case.

427

Effects of dislocations on electron channeling  

Energy Technology Data Exchange (ETDEWEB)

The phenomenon of electron channeling in a crystal affected by dislocations is considered. Earlier we had considered the quantum aspects of the positron channeling in a crystal bent by dislocations where the effects of longitudinal motion of the particle were also considered along with the transverse motion. In this paper, the effective potential for the electron case is found for the two regions of dislocation-affected channel. There is considerable shift in the potential minima due to dislocations. The frequency and the corresponding spectrum of the channeling radiation due to electrons channeling through the perfect channel and the two regions of dislocation-affected channels are calculated. The spectral distribution of radiation intensity changes with the parameters of dislocation. The continuity of wavefunctions and their derivatives is used at the three boundaries and the reflection and transmission coefficients are found using these boundary conditions in the same way as in the positron case.

George, Juby; Pathak, A P [School of Physics, University of Hyderabad, Hyderabad 500046 (India)], E-mail: appsp@uohyd.ernet.in

2009-02-18

428

Effects of dislocations on electron channeling.  

Science.gov (United States)

The phenomenon of electron channeling in a crystal affected by dislocations is considered. Earlier we had considered the quantum aspects of the positron channeling in a crystal bent by dislocations where the effects of longitudinal motion of the particle were also considered along with the transverse motion. In this paper, the effective potential for the electron case is found for the two regions of dislocation-affected channel. There is considerable shift in the potential minima due to dislocations. The frequency and the corresponding spectrum of the channeling radiation due to electrons channeling through the perfect channel and the two regions of dislocation-affected channels are calculated. The spectral distribution of radiation intensity changes with the parameters of dislocation. The continuity of wavefunctions and their derivatives is used at the three boundaries and the reflection and transmission coefficients are found using these boundary conditions in the same way as in the positron case. PMID:21817325

George, Juby; Pathak, A P

2009-02-18

429

Hydrogen effects on the interaction between dislocations  

Energy Technology Data Exchange (ETDEWEB)

The effect of hydrogen on the interaction between dislocations and other elastic centers (impurity atoms and dislocations) in 310 S stainless steel and high-purity aluminum has been directly observed during deformation experiments in situ in an environmental cell transmission electron microscope. In 310 S stainless steel, the presence of hydrogen was observed to reduce the elastic interactions between obstacles and perfect and partial dislocations; thus, enhancing the mobility of the dislocations. In high-purity aluminum, the introduction and removal of hydrogen from the system was observed to cause a reversal in the direction of motion of the dislocations piled up against a barrier; consistent with a reduction of the elastic interactions by solute hydrogen. These observations provide direct support for the hydrogen shielding mechanism that has been proposed to account for the observed hydrogen-enhanced mobility of dislocations.

Ferreria, P.J.; Robertson, I.M.; Birnbaum, H.K. [Univ. of Illinois, Urbana, IL (United States)

1998-03-02

430

Traumatic injuries of the hip.  

LENUS (Irish Health Repository)

Traumatic lesions of the hip in athletes may be clinically challenging because of the overlap in clinical presentation due to differing pathologies and the presence of multiple injuries. Imaging of the hip in the athlete has undergone a recent resurgence of interest and understanding related to the increasing accessibility and use of hip arthroscopy, which expands the treatment options available for intra-articular pathology. MR imaging and MR arthrography have a unique role in diagnosis of these pathologies, guiding the surgeon, arthroscopist, and referring clinician in their management of bony and soft tissue injury.

Marshall, Nina

2009-11-01

431

Upscaling of dislocation walls in finite domains  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We wish to understand the macroscopic plastic behaviour of metals by upscaling the micro-mechanics of dislocations. We consider a highly simplified dislocation network, which allows our microscopic model to be a one dimensional particle system, in which the interactions between the particles (dislocation walls) are singular and non-local. As a first step towards treating realistic geometries, we focus on finite-size effects rather than considering an infinite domain as typ...

Meurs, Pjp; Muntean, A.; Peletier, Ma

2013-01-01

432

Dislocation density changes in nickel under creep  

International Nuclear Information System (INIS)

Variation in dislocation density was studied in the process of nickel creep p at t=900 deg c and ?=2 kgf/mm2. The dislocation structure was studied independently by the X-ray technique and transmission electron-microscopy. The e two methods show good conformity of results by comparison. It is concluded that independent determination of dislocation density under creep is possible us sing the X-ray technique

433

Dislocation density changes in nickel under creep  

Energy Technology Data Exchange (ETDEWEB)

Variation in dislocation density was studied in the process of nickel creep at t = 900 deg c and sigma=2 kgf/mm/sup 2/. The dislocation structure was studied independently by the X-ray technique and transmission electron-microscopy. The two methods show good conformity of results by comparison. It is concluded that independent determination of dislocation density under creep is possible using the X-ray technique.

Moiseeva, I.V.; Okrainets, P.N.; Pishchak, V.K. (AN Ukrainskoj SSR, Kiev. Inst. Metallofiziki)

1984-02-01

434

Viscosity and moving dislocations in colloidal crystals  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We study the motion of a screw dislocation in colloidal crystals and apply the results to a Couette flow. We get an analytic expression for the macroscopic viscosity n as a function of an intermediate viscosity ?, of the dislocation density n and of the shear. A modification of internal stress near the dislocation core, when its velocity changes, implies a diminution of ? when the external shear rises.

Jorand, M.; Koch, A. -j; Rothen, F.

1986-01-01

435

Modelling of Dislocation Bias in FCC Materials  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Irradiation induced void swelling is problematic for the application of austenitic steels under high dose irradiation. In this thesis, the swelling is characterized by dislocation bias. The dislocation bias is obtained using the finite element method, accounting for fcc copper and nickel under electron irradiation. The methodology is implemented with the interaction energies between an edge dislocation and point defects. Analytically derived interaction energies, which are based on elasticity...

Chang, Zhongwen

2013-01-01

436

Total hip arthroplasty using large-diameter metal-on-metal articulation in patients with neuromuscular weakness.  

Science.gov (United States)

The purpose of this prospective study was to evaluate the clinical and functional outcomes of THA using large-diameter metal-on-metal articulation in patients with neuromuscular weakness. Nineteen consecutive patients (19 hips) with neuromuscular weakness and displaced femoral neck fractures were enrolled. Functional improvement and recovery, radiological evaluation of THA and surgical morbidity were assessed. Mean Harris hip and WOMAC scores at final follow-up were 81.0 and 42.9, respectively. At final follow-up, no dislocation, metal hypersensitivity, or osteolysis was observed and no patient required revision of THA. The findings of this study indicate that the functional results of THA using large-diameter metal-on-metal articulation in patients with neuromuscular weakness can produce satisfactory outcomes with early functional recovery and a low dislocation rate. PMID:24051238

Park, Kyung-Soon; Seon, Jong-Keun; Lee, Keun-Bae; Yoon, Taek-Rim

2014-04-01

437

A morphological study of the hip joint of coxarthrosis by computed tomography  

International Nuclear Information System (INIS)

The hip joint in coxarthrosis with severe deformities was studied by CT scan. In this disease, the supero-inferior diameter increased according to the degree of incomplete dislocation, while the antero-posterior diameter remained small. The acetabulum was shallow showing a small distance from the femur axis to the outer plate of the floor, but the floor of the acetabulum was thick with a considerable distance from the axis to the inner plate of the floor. The tangenital angle of the acetabulum was around 200, without remarkable changes depending on the degree of incomplete dislocation. The angle of covering the acetabulum at the center of the capitum was normally around 1800, and became smaller in incomplete dislocation, showing poor adaptability. The anterior torsion angle in incomplete dislocation tended to be larger depending upon severity of dislocation. In the cavum medullare of proximal diaphysis of the femur, the antero-posterior diameter was larger than the right-left diameter; and this relation was reversed in the use of artificial joint. Atrophy of the gluteal muscle developed with severeness of coxarthrosis. (Ueda, J.)

438

Morphological study of the hip joint of coxarthrosis by computed tomography  

Energy Technology Data Exchange (ETDEWEB)

The hip joint in coxarthrosis with severe deformities was studied by CT scan. In this disease, the supero-inferior diameter increased according to the degree of incomplete dislocation, while the antero-posterior diameter remained small. The acetabulum was shallow showing a small distance from the femur axis to the outer plate of the floor, but the floor of the acetabulum was thick with a considerable distance from the axis to the inner plate of the floor. The tangenital angle of the acetabulum was around 20/sup 0/, without remarkable changes depending on the degree of incomplete dislocation. The angle of covering the acetabulum at the center of the capitum was normally around 180/sup 0/, and became smaller in incomplete dislocation, showing poor adaptability. The anterior torsion angle in incomplete dislocation tended to be larger depending upon severity of dislocation. In the cavum medullare of proximal diaphysis of the femur, the antero-posterior diameter was larger than the right-left diameter; and this relation was reversed in the use of artificial joint. Atrophy of the gluteal muscle developed with severeness of coxarthrosis.

Hijikata, Hiromi; Tagawa, Hiroshi; Kashiyama, Masahiro; Yokohata, Yumiko; Kohno, Atsushi; Iida, Keiko (Tokyo Women' s Medical Coll. (Japan))

1983-02-01

439

Total hip arthroplasty following failed fixation of proximal hip fractures  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Background: Most proximal femoral fractures are successfully treated with internal fixation but a failed surgery can be very distressing for the patient due to pain and disability. For the treating surgeon it can be a challenge to perform salvage operations. The purpose of this study was to evaluate the short-term functional outcome and complications of total hip arthroplasty (THA) following failed fixation of proximal hip fracture. Materials and Methods: In a retrospective s...

Srivastav Shekhar; Mittal Vivek; Agarwal Shekhar

2008-01-01

440

REFLECTION ELECTRON-MICROSCOPY OBSERVATIONS OF DISLOCATIONS AND DISLOCATION-MOTION IN ZINC-OXIDE  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Low index surfaces of zinc oxide have been examined using reflection electron microscopy (REM). Individual dislocations have been observed and identified using both the diffraction and phase contrast mechanisms. Sub-surface dislocations lying at least 2 ?m beneath the surface have also been imaged. Most of the dislocations lie on the basal plane, but some were also observed on pyramidal planes. Under the action of the incident electron beam, abrupt dislocation motion was observed. This effec...

Peng, L.; Czernuszka, J.

1991-01-01

 
 
 
 
441