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Query: UNIPROT:P50502 (Hip)
 7,003 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Three cases are presented and analyzed in which a Lippman Transfixion Hip Prosthesis had to be replaced because of the discomfort of the patient. In each case, there was evidence of wear between the head of the prosthesis and the flange. The different wear patterns indicated problems which exist in the alignment of component parts of the prosthesis. In each case there was low grade sepsis to which the debris may have contributed. Because of phagocytosis, amount of debris accumulation was difficult to evaluate. The factors which appear to have contributed to the amount of debris accumulation were: the length of time the prosthesis had been used; the degree of alignment and amount of debris which may be formed and is phagocytized; the degree of manufacturing control. The design of this prosthesis incorporated mechanical problems which are generally undesirable because of: the eventual deformation of the end of the pivot rod or hole in the head of the prosthesis: progressive loosening of the movement due to this and inherent malalignment; the difficulty in fabrication, assembly and installation of the prosthesis because of the multiplicity of parts; the difficulty in maintaining adequate control of surface finishes.
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PMID:Biomechanical considerations of multiple-component hip prostheses. Analysis of three failures of the Lippman transfixation hip prosthesis. 112 66

Heterotopic ossification may adversely influence the outcome of total hip arthroplasty, causing discomfort or limiting the range of motion and function of the hip. In this prospective study we examined the influence of prophylactic radiation therapy on the postoperative Harris Hip Score in cementless total hip arthroplasty, with a follow-up from 2 to 5 years. Radiation therapy lowered the incidence of unsatisfactory results and increased the Harris Hip Score in hips with a poor preoperative range of motion.
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PMID:The influence of radiation therapy on the Harris hip score in cementless total hip arthroplasty. 772 6

A majority of hip disarticulations are performed in young people, with malignancy being the most common cause. The exoskeletal Canadian Hip Disarticulation prosthesis had been widely used as a standard total hip disarticulation prosthesis until recently when an endoskeletal modular version became the prosthesis of choice. However, the "basket-shaped" socket provided by the standard total hip disarticulation prostheses has been a source of discomfort and a reason for prosthetic rejection by many patients. This report concerns two patients with true lower limb disarticulation at the hip joint. Both of the patients failed to adapt to the standard total hip disarticulation prosthesis but successfully used a new total contact suction socket design. This new prosthesis provided improved suspension, better patient compliance, and enhanced prosthetic acceptance and mobility.
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PMID:Total hip disarticulation prosthesis with suction socket: report of two cases. 1008 92

The purpose of this study was to report eight additional cases of habitual dislocation of the hip (HDH) and to combine the authors' data with a compilation of the cases from the literature. The authors attempted to investigate the various causative factors, outcomes, and indications for conservative and operative treatments. The results suggest that an unusual ability to dislocate the hip voluntarily at a young age constitutes a specific pediatric entity, and no single factor can be determined to be the definite cause of HDH. Multiple triggering factors (generalized ligamentous laxity, excessive anteversion of the femur and acetabulum, osteocartilaginous defect of acetabulum, coxa valga, psychiatric immaturity) appear to be associated with HDH. Treatment should be conservative in the first instance; it includes simple observation with or without psychiatric counseling and immobilization with cast or brace. Hip stabilization by surgical means is selectively indicated when the episodes of hip dislocation do not fade away in due time despite conservative treatment and when primary or secondary capsular laxity or osteocartilaginous deformation or defect of the hip is severe enough to cause repeated dislocation or residual subluxation, which may cause persistent pain or discomfort.
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PMID:Habitual dislocation of the hip in children: report of eight additional cases and literature review. 1260 47

Osteoid osteoma, an infrequent but important cause of musculoskeletal pain, is often difficult to diagnose. We present a case of a 31-year-old man who, for 2 years, had left groin pain radiating to the thigh. Symptoms began 1 month after a motorcycle crash in which he sustained only shin abrasions. Initial spine and hip radiographs were negative. Treatment with naproxen provided significant relief, but the symptoms gradually worsened over 6 months. An electromyogram and lumbar magnetic resonance imaging (MRI) of the left lower leg were unremarkable. Hip MRI revealed edema without fracture. Prophylactic femoral pinning for impending stress fracture provided no relief. Rheumatologic evaluation revealed normal serologies and synovial fluid. Cyclobenzaprine and sulfasalazine were started and provided mild relief. At presentation to our institution, he was in significant discomfort, but could ride a bicycle for exercise and was completing a home exercise program. He had antalgic gait and globally restricted hip motion with end-range pain. A neurologic examination showed no abnormalities. Hip and pelvis computed tomography scan revealed increased sclerosis of the femoral head, with a central lucency suggestive of osteoid osteoma. This was confirmed by biopsy. Radiofrequency ablation provided significant symptom relief.
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PMID:The diagnostic and therapeutic challenge of femoral head osteoid osteoma presenting as thigh pain: a case report. 1280 46

Hip arthroscopy is an excellent way to evaluate, diagnose, and treat acetabular labral and chondral lesions. It is minimally invasive and can be done on an outpatient basis. Candidates for hip arthroscopy will have functionally limiting symptoms and reproducible physical findings. Patients will often have mechanical symptoms such as clicking, catching, locking, or giving way. Symptoms may be preceded by a traumatic event such as a fall or twisting injury or may have an insidious onset. Radiographic studies are not sensitive enough to diagnose intra-articular hip pathology; however, contrast agents used in conjunction with CT and MRI may aid in the diagnosis. Therefore, a high level of clinical suspicion and prudent clinical judgment are warranted. A thorough knowledge of positioning and anatomic relationships to portal placement is necessary to prevent potential neurovascular complications from occurring during hip arthroscopy. Labral tears are the most common cause of mechanical hip symptoms. Tears occur anteriorly, and associated chondral lesions are common. The severity of the chondral lesion is highly correlated with the surgical outcome. The most frequently observed chondral lesion is the watershed lesion, which consists of a labral tear with separation of the labrum from the articular surface at the labral-cartilage junction. The difficulty in identifying these lesions as well as their effect on outcome provides a convincing rationale for arthroscopic hip surgery. Arthroscopic treatment of these tears involves judicious debridement back to a stable base while carefully preserving the capsular labral tissue. Eliminating the source of mechanical symptoms secondary to labral pathology should alleviate the patient's discomfort. Chondral defects are drilled or treated with a microfracture technique to enhance fibrocartilage formation. Patient outcomes are directly dependent on the stage or extent of the labral and chondral lesion.
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PMID:The diagnosis and treatment of labral and chondral injuries. 1511 46

The objective of this cross-sectional study was to investigate whether body mass index (BMI) and hip mobility are associated with low-back pain (LBP) in adolescents. The study population included all adolescents in 8th and 9th grades in a rural and in an urban area in Eastern Norway. Eighty-eight adolescents participated (mean age 14.7 years), making the response rate 84%. LBP was assessed by a questionnaire answered in the classrooms as pain/discomfort in the low back during the preceding year. Body height and weight were measured, and BMI was calculated. Hip mobility was measured as active movements by a goniometer. The level of significance was set to P< or =0.05. In bivariate analysis for the whole group, LBP was associated positively with a higher than mean BMI, while LBP among boys was associated with a less than mean hip flexion, internal rotation, and hamstrings flexibility. In multiple regression analyses, adjusting for gender and well-being, LBP was associated with a higher than mean BMI, a less than mean hamstrings flexibility, and a less than mean hip flexion. The results suggest further prospective research to investigate whether poor hip mobility and high BMI may predict juvenile LBP.
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PMID:Low-back pain in adolescents is associated with poor hip mobility and high body mass index. 1514 57

The purpose of this study was to evaluate the results of the Thrust Plate Prosthesis as a treatment option for osteoarthritis of the hip in young patients. Of the fifty patients (63 hips) reviewed, 31 (62%) were males and 19 (38%) females. Pre-operative diagnosis included primary osteoarthritis (23), developmental dysplasia (8), avascular necrosis (7), Perthes (4), post-traumatic arthritis (3), rheumatoid arthritis (2), ankylosing spondylitis (1), psoriatic arthropathy (1) and slipped upper femoral epiphysis (1). All components were implanted uncemented with metal-on-metal articulation. The average follow-up was 4.04 years (range 12 months-8.5 years). The mean age of the patients was 42.3 years (range 21-57 years). The mean pre-operative Harris Hip Score was 41.9 (range 12-89) and at final follow-up 89.91 (range 41-100). In 25 hips with > or = 5 yr follow-up, the average HHS at final follow-up was 84.5 (range 50-100). Complications included dislocation (2), transient sciatic nerve palsy (1), discomfort from lateral strap (2), implantation of wrong femoral head (1), revision (3 = 4.76%) and implant loosening (4) (6.35%). The thrust plate prosthesis is a useful alternative in young patients with hip arthritis and the results are comparable with other uncemented hip replacements. The added advantage is preservation of the proximal femoral bone stock, which can prove useful in future revisions.
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PMID:Early results with the thrust plate prosthesis in young patients with osteoarthritis of the hip. 1615 52

Hip fracture resulting from a fall is one of the main causes of morbidity and functional decay in elderly people. Hip protectors, plastic shields or foam pads fitted in pockets within specially designed underwear could represent an interesting preventive measure available to nursing staff caring for elderly people. The literature from 1993 to July 2005 was reviewed to assess the efficacy and compliance of such devices. In fact, the efficacy of this measure is still controversial because although there is some evidence that in institutions with high rates of hip fracture the use of hip protectors may help to reduce this incidence, there is no evidence of this being true for the majority of older people living at home. Compliance remains poor due to discomfort the practical impairment related to continuous wear of the device. While awaiting further evidence, nursing staff should not use the protectors as a routine measure to prevent hip fracture in institutionalized elderly people and outside a research program. Instead, they should concentrate on the implementation of those preventive measures that have been proved effective.
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PMID:[Efficacy and compliance of hip protectors in preventing fractures in the elderly: review of literature]. 1694 25

The thrust plate prosthesis (TPP) is a neck preserving femoral component in total hip arthroplasty (THA). We present our mid-term results from using the thrust plate prosthesis in young patients with hip arthritis. We conducted a retrospective review of a consecutive series of patients with a minimum of 5 years follow-up after total hip arthroplasty using the thrust plate prosthesis. Harris Hip Score (HHS) and Oxford Hip Score (OHS) were recorded preoperatively and at the last clinical review. Radiographic analysis was performed and patient satisfaction levels and complications were recorded. Between 1996 and 2000 we implanted 41 prostheses in 38 consecutive patients (3 bilateral). The mean age at time of surgery was 56 years (41-67) and the mean length of follow-up was 71 months. The HHS improved from a mean of 42 points preoperatively to 88 points at the last clinical review and the mean OHS also improved from 40 points to 18 points. Eighty-three percent of patients expressed that they were 'very satisfied' with the procedure. Implant survivorship was 95% at 5 years follow-up with revision surgery being the end point. Eight patients suffer discomfort when lying on the operated side. Many patients treated with the TPP show excellent improvement in clinical outcome scores and a high level of patient satisfaction but the complication rate gives some concern. We support the selective use of the TPP to treat young patients with hip osteoarthritis.
Hip Int
PMID:The thrust plate prosthesis in the treatment of osteoarthritis of the hip. Clinical and radiological outcome with minimum 5-year follow-up. 1864 81


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