Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “HIP”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 577 records · Page 32Linked to original sources
PubMed1981

[Transient synovitis of the hip in childhood. "observation hip" (author's transl)].

Thirty-eight children suffering of a transient synovitis of the hip joint have been reviewed with a follow up of 2 to 20 years (mean 7 years). It appears that this affection is not as benign as it seems, for in 1/3 of the cases it remains clinical and roentgenographic sequelae some of them looking like a minor degree of Legg Perthes' disease. The authors insist on the treatment, with traction in bed, and on the necessity of a new roentgenogram 45 days after the onset of the illness, to exclude the risk of an osteochondritis of the hip joint. Nuclide bone scan cannot affirm the diagnosis of transient synovitis, but can only eliminate an osteochondritis of the hip when it shows hyperfixation of the hip.

Adolescent↗
PubMed1982

[Outcome of hips at risk in congenital dislocation of the hip].

54 hips with one or more risk factors of congenital dislocation of the hip reviewed. 16 only received an early treatment. At follow up (2 and half years to 3 years) no difference could be found between treated or untreated cases, and no correlation could be made between the X-Rays measurements and the risk factor. 30% of the hip showed one or more abnormal angles (C-CE-or TALUS) 9 children reviewed at 5 and half still showed an abnormal talus. Actually, it is very difficult to accurately determine the radiologic criteria between normality and pathologic in children hips.

Child, Preschool↗
PubMed1995

Total hip replacement in irradiated hips. A retrospective study of 71 cases.

We retrospectively reviewed 56 patients (71 hips) treated by total replacement for severe disability after pelvic irradiation. Symptoms were associated with various radiological lesions due to irradiation, including atraumatic femoral-neck fracture, osteonecrosis of the femoral head or of the acetabulum, and radiation osteitis of the whole pelvis. From 1970 to 1982 we used standard cemented components in 49 hips and had a high rate of acetabular loosening (52%) at a mean follow-up of 69 months. This was probably due to the mechanical insufficiency of irradiated periacetabular bone. From 1983 to 1990 we routinely used acetabular reinforcement rings. The rate of aseptic acetabular loosening in 22 hips at a mean follow-up of 40 months was 19%, but there were two septic loosenings emphasising the risk of infection in these patients. When total replacement is required for an irradiated hip, we recommend reinforcement of the acetabulum using a metallic ring, but there is still an increased risk of infection and in difficult cases such as severe acetabular destruction or soft-tissue or vascular injuries, a Girdlestone procedure may be indicated.

Adult↗
PubMed1995

NIH consensus conference: Total hip replacement. NIH Consensus Development Panel on Total Hip Replacement.

OBJECTIVE: To provide physicians with a current consensus on total hip replacement. PARTICIPANTS: A nonfederal, nonadvocate, 13-member consensus panel representing the fields of orthopedic surgery, rehabilitation and physical medicine, biomechanics and biomaterials, internal medicine, public health, geriatrics, biostatistics, and a public representative. In addition, 27 experts in orthopedic surgery, rehabilitation and physical medicine, biomechanics and biomaterials, rheumatology, geriatrics, and epidemiology presented data to the consensus panel and a conference audience of 425. EVIDENCE: The literature was searched through MEDLINE and an extensive bibliography of references was provided to the panel and the conference audience. Experts prepared abstracts with relevant citations from the literature. Scientific evidence was given precedence over clinical anecdotal experience. CONSENSUS: The panel, answering predefined consensus questions, developed their conclusions based on the scientific evidence presented in open forum and the scientific literature. CONSENSUS STATEMENT: The panel composed a draft statement that was read in its entirety and circulated to the experts and the audience for comment. Thereafter, the panel resolved conflicting recommendations and released a revised statement at the end of the conference. The panel finalized the revisions within a few weeks after the conference. CONCLUSIONS: Total hip replacement is an option for nearly all patients with diseases of the hip that cause chronic discomfort and significant functional impairment. Most patients have an excellent prognosis for long-term improvement in symptoms and physical function. At this time, a cemented femoral component using modern cementing techniques, paired with a porous-coated acetabular component, can give excellent long-term results. Revision of a total hip replacement is indicated when mechanical failure occurs. Continued periodic follow-up is necessary to identify early evidence of impending failure so as to permit remedial action before a catastrophic event.

Hip Prosthesis↗
PubMed1995

[Evaluation of bone mass in hip fractures measuring lumbar spine and contralateral hip with bone densitometry].

Hip fracture is frequent in postmenopausal women with osteoporosis. The aim of this work was to assess bone mass in women with hip fracture and compare it with that of normal women. Bone densities of lumbar spine (considering areas with and without spondylosis), femoral neck, greater trochanter, and unfractured hip Ward's triangle were measured with a double beam isotopic densitometer. Thirty-one women aged 58-95 years old were studied and compared with normal women studied at the same laboratory. Bone densities in fractured and normal women were 0.82 +/- 0.16 and 0.85 +/- 0.05 g/cm2 in lumbar spine respectively (NS), 0.74 +/- 0.15 and 0.85 +/- 0.05 g/cm2 in lumbar spine without spondylosis respectively (p < 0.001), 0.60 +/- 0.11 and 0.65 +/- 0.08 g/cm2 in femoral neck respectively (NS), 0.49 +/- 0.09 and 0.57 +/- 0.05 g/cm2 in greater trochanter respectively (p < 0.001) and 0.48 +/- 0.12 and 0.52 +/- 0.09 g/cm2 in Ward's triangle respectively (NS). It is concluded that the larger differences in bone density between women with and without hip fracture are observed in the greater trochanter.

Absorptiometry, Photon↗
PubMed1997

Anatomic study of the pre- and neonatal hip. Physiopathologic considerations on dysplasia and congenital dislocation of the hip.

Therapeutic success in dysplasia and congenital dislocation of the hip depends on an early diagnosis. The physiopathology remains very debatable and several concepts are propounded. For a better physiopathologic understanding, the authors have carried out a study of the morphology and development of 22 pre- and neonatal hips. At first, the acetabulum is cartilaginous and distorted by the moving femoral head; this acetabulum is histologically affected by the femoral pressure. The pathologic hip is characterized by defective posterior bony coverage of the femoral head by the acetabulum. The acetabulum ossifies during the 3 months following birth, forming a cup-like cavity under the pressure of the femoral head. Therefore, neonatal screening tests such as sonography must take place in the first weeks of life.

Acetabulum↗
PubMed2006

Total hip arthroplasty with the porous-coated anatomic hip prosthesis: results at 11 to 18 years.

The authors had previously reported good results with apparent fixation of a series of porous-coated anatomic hips at 2 to 4 years. In a larger series of 133 hips with porous-coated anatomic uncemented components, 91 hips in 82 patients were available for a follow-up of 11 years or greater. Although 3.1% of acetabular cups had migrated or had been revised at 2 to 4 years; at 11 to 18 years, there was 37% lysis, 21.7% migration, and 32.3% revision. For the femur at 2 to 4 years, there was 3.1% migration and 1.5% revision. At 11 to 18 years, there was 27.2% lysis (proximal only), 6.6% migration, and 3.2% revision. Survival analysis for migration or revision for the femoral was 94%, and for the acetabular component, 63%, deteriorating markedly after 10 years.

Adolescent↗
PubMed1990

Cementless total hip arthroplasty with femoral head bone grafting for hip dysplasia.

Femoral head bone grafting was required to augment acetabular bone stock in 19 cases of hip dysplasia treated with cementless total hip arthroplasty. All acetabular grafts provided mechanical support for the cementless acetabular component. Radiographic evaluation of the fixation of the femoral components at an average of 3 years after surgery revealed an optimum appearance in all cases. All porous-coated acetabular components remained stable, but only one of six (17%) nonporous threaded acetabular components maintained stability. One threaded acetabular component has been revised for symptomatic loosening. Acetabular graft healing was suspected in 18 of 19 cases (95%). Significant graft resorption was observed only in the cases with unstable threaded acetabular components. The clinical scores were high. Cementless total hip arthroplasty with structural acetabular grafting and porous acetabular components appears to produce satisfactory short-term results.

Acetabulum↗
PubMed1975

Growth and remodeling of the hip joint and proximal femur in adolescent dogs. A scintimetric investigation with special reference to hip dysplasia and estradiol induced changes.

The uptake of 85Sr was shown to be higher in dysplastic hip joints than in normal joints of adolescent dogs. This was interpreted as a sign of increased remodeling. In contrast, the uptake of 85Sr in the growth plate and metaphysis of the proximal femur was lower in dogs with hip dysplasia than in dogs with normal hip joints. This was interpreted as a sign of retarded growth of the proximal femur (more advanced skeletal maturation). Greyhounds of bitches, which were injected with estradiol during pregnancy, also showed retarded growth of the proximal femur. This was interpreted as a late effect of estradiol.

Animals↗
PubMed2006

Palamed G compared with Palacos R with gentamicin in Charnley total hip replacement. A randomised, radiostereometric study of 60 HIPS.

We performed a randomised, radiostereometric study comparing two different bone cements, one of which has been sparsely clinically documented. Randomisation of 60 total hip replacements (57 patients) into two groups of 30 was undertaken. All the patients were operated on using a cemented Charnley total hip replacement, the only difference between groups being the bone cement used to secure the femoral component. The two cements used were Palamed G and Palacos R with gentamicin. The patients were followed up with repeated clinical and radiostereometric examinations for two years to assess the micromovement of the femoral component and the clinical outcome. The mean subsidence was 0.18 mm and 0.21 mm, and the mean internal rotation was 1.7 degrees and 2.0 degrees at two years for the Palamed G and Palacos R with gentamicin bone cements, respectively. We found no statistically significant differences between the groups. Micromovement occurred between the femoral component and the cement, while the cement mantle was stable inside the bone. The Harris hip score improved from a mean of 38 points (14 to 54) and 36 (10 to 57) pre-operatively to a mean of 92 (77 to 100) and 91 (63 to 100) at two years in the Palamed G and Palacos R groups, respectively. No differences were found between the groups. Both bone cements provided good initial fixation of the femoral component and good clinical results at two years.

Aged↗
PubMed1998

Clinical study on arthroplasties for osteoarthritic hip by quantitative gait analysis. Comparison between total hip arthroplasty and bipolar endoprosthetic arthroplasty.

The present study was undertaken to serially observe gait of patients after hip arthroplasty, using quantitative gait analysis, and to compare it between patients after total hip arthroplasty (THA) and those after bipolar endoprosthetic arthroplasty (BEA). The subjects were 53 women with unilateral osteoarthritis of the hip. Thirty-one of them underwent THA (mean age: 59.5 years) and 22 underwent BEA (mean age: 58.0 years). The stance time and characteristic parameters calculated from the vertical component of floor reaction force (FRF) were analyzed by use of FRF plate. The stance time, which indirectly represents the walking speed, tended to decrease for one year after THA and for 3 years after BEA. The decrease in this parameter was greater on the unaffected side than on the affected side. The deceleration effect and the weighing-off effect are indicators useful for observation of gait recovery. Significant differences in these indicators between the unaffected and affected sides were seen for one year after THA and 3 years after BEA. This indicates that cadence and balance of the gait recovers earlier after THA than after BEA.

Acceleration↗
PubMed1992

Bipolar hip arthroplasty for recurrent dislocation after total hip arthroplasty. A report of three cases.

Recurrent dislocation after total hip arthroplasty is often a difficult complication to manage. Bipolar prostheses may be useful in these cases because motion can occur at two bearing surfaces and thus permit the greater range of motion necessary to dislodge the head from the acetabulum. The bipolar head is also larger than a conventional total hip femoral component, so a greater volume must be displaced from the acetabulum for dislocation to occur. Three patients with recurrent dislocation of a total hip prosthesis were successfully treated by conversion to bipolar devices after failure of multiple surgical procedures and treatment even with braces.

Adult↗
PubMed2005

Radiological changes around the stem after cementless hip implantation in case of the anatomic medullary locking hip system -- five years results.

INTRODUCTION: We present radiological results regarding the development of stress shielding around the stem of the AML hip endoprosthesis and discuss the clinical significance of it and preventive measures against stress shielding. MATERIAL AND METHODS: 391 patients (216 female and 122 male) with an AML-hip-endoprosthesis between 1991 and 1992 were followed clinically and radiologically during 5 years postoperatively. It was searched for a statistical correlation of stress shielding with a pre-existing osteoporosis of the proximal femur (Barnett-Nordin index), the diameter of the stem, a varus position of the stem and thigh pain. RESULTS: Stress shielding occurred in only 13.5 % of all patients. Atrophy of the proximal femur was detectable within 1 year, in 5 cases already after 3 weeks. Distal sclerosis reached its maximum after 1-2 years. Remarkably, women showed a tendency to more frequent stress shielding. In women more often than in men, a pre-existing osteoporosis of the proximal femur occurred. Cases with osteoporosis of the proximal femur experienced more often stress shielding. The same was seen in prostheses with diameters >13.5 mm. A slight varus position of the stem also favoured stress shielding, but it indicated an incomplete canal fit of the stems, too. Patients with stress shielding more often were suffered from thigh pain. CONCLUSION: Stress shielding is a result of the discrepancy between the elasticity of the bony femur and the stiffness of the stem. The AML-hip-prosthesis rarely shows this phenomenon. An osteoporosis of the proximal femur (coupled with an thinning of the cortex and generating higher elasticity of the bone), stems with higher diameters (what means higher stiffness) and incomplete canal fit more likely predisposed patients to stress shielding. To prevent stress shielding, the AML prosthesis should not be implanted in cases with known severe osteoporosis of the proximal femur. This prosthesis should be taken preferable in cases with diameters of the femoral canal smaller than 15 mm. Fully canal fit has to be achieved. The frequency of thigh pain, which occurs more often in patients with stress shielding, could be reduced by considering those factors.

Arthroplasty, Replacement, Hip↗
PubMed1971

Studies in osteoarthritis of the hip. 3. Congenital subluxation and osteoarthritis of the hip.

Although congenital subluxation of the hip is an important primary abnormality, upon which OA hip may later supervene, other factors may also be important in individual patients. When osteoarthritis is seen with subluxation, it probably represents congenital subluxation and not displacement of the femoral head secondary to remodelling. Osteoarthritis in these cases is usually superolateral or supermedial in type, with the major impact of the disease in the superior articular cartilage. A similar form of osteoarthritis is seen in cases where leg-length disparity exists, with or without the presence of congenital subluxation, the wear occurring on the side of the long leg. It has been suggested that bio-mechanical considerations support the contention that stress is likely to be increased in the superior area of the joint on the side of a long leg, and wear can be expected to occur here. If either anomaly may provoke the later development of OA hip, it remains to be shown which is more important when both are present in the same patient.

Adult↗
PubMed2000

Bilateral hip osteonecrosis: influence of hip size on outcome.

OBJECTIVE: To measure the volume of osteonecrosis in 30 patients with disease in both hips (one side with collapse and the other without at Ficat stage I). METHOD: The volume of the osteonecrosis was measured by magnetic resonance imaging. RESULTS: The progression to collapse was influenced by the size of the lesion in each patient. The first collapsed hip was that with the largest volume of osteonecrosis. CONCLUSION: The volume of the osteonecrotic lesion on the second hip (stage I without collapse) is a good predictor of the time to collapse of this second hip.

Disease Progression↗
PubMed2000

Cementless total hip arthroplasty using the omnifit system: An 8.2 year follow-up study of 166 hips.

One hundred and sixty-six cementless primary total hip arthroplasties were performed in 133 patients with porous coated Omnifit prosthesis. The average age was 49.7 years. The mean follow-up period was 8.2 years with a minimum of 5 years. Good to excellent clinical results were achieved in 93% of patients. The overall revision rate was 5.4%. Radiographically, bone ingrowth occurred in all unrevised cups, and in 95% of unrevised stems. Osteolytic lesions appeared at an average of 3.8 years postoperatively. Femoral and pelvic osteolysis were seen in 21% and 4% of the surviving hips respectively. All femoral osteolytic lesions were found in the proximal Gruen zones 1 and 7. The mean annual polyethylene wear rate was 0.15 mm. Approximately one-third of the hips were observed to have excessive wear. Our experience with cementless Omnifit total hip prosthesis is encouraging. Of significant concern is the high incidence of excessive polyethylene wear and osteolysis.

Journal Article↗
PubMed1996

Trochanteric transfer in total hip replacement: effects on the moment arms and force-generating capacities of the hip abductors.

A three-dimensional computer model of the pelvis, femur, gluteus medius, and gluteus minimus was used to evaluate the changes in muscle moment arms and force-generating capacities caused by alterations in the location of the greater trochanter. In the first part of this study, the hip center and all other aspects of joint geometry remained unaltered, while we examined changes in abduction moment arms that resulted from transfer of the trochanteric fragment to a wide variety of positions on the femur. The largest increase in average abduction moment arm was 11% (0.5 cm), which occurred with an anterolateral transfer. Most transfers resulted in moment arm changes of less than 5%. In the second part of this study, the hip center was displaced 2 cm superiorly, and the effects of a distal trochanteric transfer on the moment arms and force-generating capacities of the abductors were analyzed. The superior displacement caused a 13% decrease in the moment arm of the abductors and a 43% decrease in their force-generating capacity. The moment arm was not restored by distal transfer of the greater trochanter; however, distal transfer had the major advantage of restoring muscle lengths and force-generating capacities. These results suggest that trochanteric transfer should be considered primarily as a means to restore muscle length because it has limited potential to increase the moment arms of the two primary hip abductors.

Biomechanical Phenomena↗
PubMed1988

Piroxicam and naproxen in patients with osteoarthritis of the hip waiting for total hip replacement.

Two-hundred and fifty-two patients waiting for a total hip replacement for degenerative hip disease were randomized to two groups of nonsteroidal anti-inflammatory medication using piroxicam, 20 mg per day, and naproxen, 750 mg per day, after exclusion for severe dyspepsia or peptic ulcer, asthma, idiosyncracy, dissent, age below 50 years, Harris hip score above 50, or significant contralateral disease. A significant improvement in the pain and daily activity parameters was obtained in both groups. The effect was better in the piroxicam group one month after the commencement of the treatment, and equal in the groups later during the observation period of 2-5 months. We conclude that continuous medication is beneficial in patients with severe osteoarthritis scheduled for operation. However, the side effects of the medication have to be carefully considered and followed up.

Activities of Daily Living↗