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At least 1,441 records · Page 80Linked to original sources
PubMed1988

[Sprain and dislocation of the hip joint].

Traumatic dislocations of the hip, while very infrequent injuries, must be treated with the utmost urgency. The later the adjustment is made, the sooner aseptic necrosis of the femoral head and periarticular ossification have to be reckoned with; these may lead to dysfunction. The results of 40 cases are reported, one-half of which was treated with two-week extension and a long period of non-weight bearing, the other half without extension, early mobilisation and partial weight bearing up the 11th week. The results in each group are equally good. Thus, we endorse Lorenz Böhler's proposal to follow the immediate repositioning with a short inpatient treatment and early mobilisation, increasing to full-weight bearing after one week and certifying working capability after 3 to 4 weeks.

Accidents, Traffic↗
PubMed1996

[Postoperative radiotherapy in the prevention of heterotopic ossification after endoprosthetic hip joint replacement].

BACKGROUND: Following total hip arthroplasty high-grade heterotopic ossification occurs with a range of 0.5 to 27%. Local postoperative hip irradiation using different dosage and fractionation schedules reduces the incidence in high-risk cases on an average of 8%. The present retrospective study compares results after conventionally fractionated and high-dose radiotherapy. PATIENTS AND METHOD: A total of 50 hips (46 patients) from 2 different risk groups had complete follow-up. In group I (40 hips [80.0%]) radiotherapy was indicated after surgical excision of pre-existing high-grade heterotopic ossification, in group II (10 hips [20.0%]) for several risk factors (contralateral heterotopic ossification [n = 7], hypertrophic osteoarthritis [n = 2], spondylosis hyperostotica [n = 1]). In 28/50 cases (56.0%) conventionally fractionated irradiation with total doses ranging from 12.0 to 20.0 Gy was given, in 22/50 hips (44.0%) a high-dose irradiation consisting of 10.0 Gy given in 2 fractions on each of the first 2 postoperative days was applied. After a minimal observation period of 6 months (median: 22 months, range: 6 to 56 months) roentgenograms were analysed using a modified Brooker score. RESULTS: At follow-up, 2 hips in group I had recurrence of high-grade heterotopic ossification with the stages IIIA and IVB. In 1 case radiotherapy was interrupted after 3 x 2.0 Gy due to sepsis (IIIA), in the other case ectopic bone recurred from bony islands which layed outside the radiation portal (IVB). In group II, 9 patients had stage 0 and 1 patient stage IA. Statistical analysis using the Wilcoxon test showed a highly significant reduction of the amount of pre-existing heterotopic ossification (p < 0.0001) for both fractionation schedules. The comparison of both fractionation groups with the Whitney-Mann-U-test (p = 0.92) showed no statistical significant difference. CONCLUSIONS: The data about the high therapeutic efficacy of postoperative radiotherapy for prevention of heterotopic ossification were confirmed. Both fractionation schedules led to a sufficient reduction of high-grade heterotopic ossification in the 2 treated risk groups.

Adult↗
PubMed1989

[Arthroplasty of the hip joint using biocompatible self-dissolving polymers (an experimental study)].

This study is devoted to experimental investigation of using a polymeric self-dissolving film of N-vinylpyrrolidine and alkylmethacrylate 100 muk to 300 muk in width for arthroplasty of the hip joint. The experiments were carried out on 10 rabbits whose articular cartilage from the acetabulum was removed and the latter was lined with the polymeric film. The animals were excluded from the experiment at different periods (from 2 weeks to 8 months). It was morphologically determined that the use of a biocompatible film leads to the formation of a new cartilage or a cartilaginous regenerate, which at later terms is replaced by fibrillar connective tissue and fibrillar cartilage, while the biocompatible film plays no direct role in the formation of the cartilage and the connective tissue, but contributes to their emergence under the latter as if under protector.

Animals↗
PubMed2004

Orthopedic devices; effective data of requirement for premarket approval for hip joint metal/polymer or ceramic/polymer semiconstrained resurfacing cemented prosthesis. Final rule.

The Food and Drug Administration (FDA) is issuing a final rule to require the filing of a premarket approval application (PMA) or a notice of completion of a product development protocol (PDP) for the hip joint metal/polymer or ceramic/polymer semiconstrained resurfacing cemented prosthesis. The agency also is summarizing its proposed findings regarding the degree of risk of illness or injury designed to be eliminated or reduced by requiring the devices to meet the statute's approval requirements and the benefits to the public from the use of the devices. This action implements certain statutory requirements.

Device Approval↗
PubMed1977

[History and technical development of hip joint replacement operations (author's transl].

The development of hip replacement operations is closely connected with the failures in operations to save the head of the femur. After many materially determined set-backs and errors due to false biomechanical ideas, there was renewed progress in allo-arthroplasty of the hip in the, 50's. But even newer models--like the Weber-Huggler-prosthesis-show that the technical development does not yet fully take into account the actual biological demands.

Arthroplasty↗
PubMed1979

Computed tomography reconstruction from hollow projections: an application to in vivo evaluation of artificial hip joints.

The long-term mechanical stability of total hip arthroplasties limits the application of this widely used surgical procedure in cases of severe coxarthroses. A noninvasive method of assessing the tissue distribution in the vicinity of the implant--bone interface is needed to identify early signs of implant loosening and to evaluate new prosthetic solutions. In order to develop such a method, a modified computed tomography technique has been devised that yields cross-sectional images without the usual artifacts caused by metallic implants. This technique provides information on bone mineral and bone cement distributions as well as on the precise position and orientation of the implant within the femur shaft. Results obtained from excised human femurs and preliminary data from measurements on patients made 3 months postoperatively reveal that the bone cement distribution is much less favorable than is indicated by radiographs.

Aged↗
PubMedDate not supplied

Limb length discrepancy and related problems following total hip joint replacement.

Limb lengthening is not uncommon after total hip replacement and may cause subjective problems for patients. We have studied 150 total hip replacements to investigate the operative change in limb length. A radiologic evaluation is used and is shown to be accurate. One hundred forty-four limbs were lengthened an average of 15.9 mm. Slightly less lengthening was observed if the greater trochanter was removed as part of the operative procedure. For subjective complaints 40 (27%) patients required heel lifts on the unoperated side to gain a satisfactory gait pattern. Partial sciatic nerve palsies also occurred in this series (3.3%) subsequent to total hip replacements. These palsies did not correlate with sex, lengthening of the extremity, or operative procedure, but did correlate with repeat surgeries and in all instances the condition resolved or improved.

Aged↗
PubMed1997

[Roentgen studies and arthrography of the hip joint in infancy].

Radiographic examination of infants' hips is still indicated sometimes in addition to the sonographic examination. The legs have to be kept in a neutral position. The pelvis should not be turned to the side or tilted. Hilgenreiner's acetabular index is preferred in the diagnosis of hip dysplasia. Long-term follow-ups of critical values show spontaneous improvement in some cases, but also joints with increasing dysplasia. Critical values between one and two standard deviations of our material and somewhat above have to be followed. The axial orthograde view of the hip as a lateral view of the femoral head is recommended in Perthes' disease to determine the Catterall groups more exactly than in the Lauenstein position. Arthrography is still indicated in dislocated hips that cannot be reduced into the socket because of a narrow cartilaginous inlet. Here the risk of avascular necrosis is high and traction is indicated.

Acetabulum↗