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Results for “Hip Prosthesis”

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At least 397 records · Page 22Linked to original sources
PubMed2002

[Total hip prosthesis, is it a criterion for the assessment of structural modulator efficiency?].

OBJECTIVE: It has been evaluated during a longitudinal prospective study (ECHODIAH study) conducted over a 3-year period estimated the pertinence of total hip arthroplasty as an assessment criterion for the evaluation of the efficacy of structuromodulators. RESULTS: It is clear that patients who undergo total hip arthroplasty have more advanced hip disease. Factors predisposing to total hip arthroplasty have been demonstrated by multivariate analysis: advanced age, female gender, severe pain, Lequesne index, superolateral migration of the femoral head, important structural alterations. Other factors such as area of residence were not found to have any influence. Consequently, total hip arthroplasty appears to be a valid and reliable assessment criteria for degenerative hip disease.

Hip Prosthesis↗
PubMed1988

[Radiologic evaluation of an adverse evolution in total hip prosthesis].

The retrospective study of 50 operated cases of cemented total hip replacement and a review of the literature enabled the authors to define the radiological features of the above-mentioned condition. These features include one or more of the following signs: calcar reabsorption, lacunar erosions, modified relationships between the prosthesis components, sepsis and loosening, periarticular calcifications, dislocation and fracture of prosthesis components. Careful evaluation of these radiological features is extremely important for both an early diagnosis of failed total hip replacement and the choice of an adequate surgical treatment.

Adult↗
PubMed1989

[Total hip prosthesis according to Charnley. Review of our cases].

This is a follow-up study of 363 Charnley hip replacements out of 548 implanted from 1970 to June 1984. Clinical results, with a 2-year minimum follow-up (average 5 years, maximum 15 years) are excellent or good in 89.5% of the cases. In the group with minimum 5-year follow-up (average 7, maximum 15 years) the clinical results remain good to excellent in 89.2% of the cases. Radiographic results have been studied in the group with minimum 5-year follow-up. Component stability or radiographic loosening have been studied, taking into account the presence of radiolucent lines between bone and cement, between metal and cement, or based on component migration or positional shift. We have detected radiographic loosening in 11.5% of the acetabular and 13.5% of the femoral components. A correlation was sought between radiographic loosening and some clinical (diagnosis, weight, follow-up period) and radiographic (postoperative component position, polyethylene wear, cement technique, periosteal reaction, myositis ossificans) parameters. There is no strong relationship between radiographic loosening and clinical results, as 28 of 35 radiographically loose prostheses maintained excellent or good results. Finally, the results of a selected group of 29 hips, with a minimum follow-up of 10 years, is reported.

Adult↗
PubMedDate not supplied

Comparison of two- and three-dimensional methods for assessment of orientation of the total hip prosthesis.

A comparison of two- and three-dimensional methods for the determination of the orientation of total hip prostheses was made in a group of 57 patients. The acetabular inclination and the collum-diaphyseal angle measured on a.p. projections (2-D) were adequate in most cases for assessing how vertically the prosthetic component was inserted, but in individual cases with a high degree of version these measurements could be misleading. Anteversion measured in the transverse plane (2-D) was more sensitive to errors than planar anteversion measured as a rotation around the longest diameter of the ellipsoid projection of the acetabular opening, but it gave a rough estimate of the relation of the prosthetic components. Determination of the spatial (3-D) orientation of the components provides a precise estimate of the component relations.

Acetabulum↗
PubMed1983

[Arthrotic Lumbar spinal canal stenosis and total hip prosthesis].

The authors have seen 11 instances in which symptoms that could be related to arthrosis of the hip and treated by total hip replacement were associated with root involvement due to lumbar spinal stenosis of degenerative origin. At times the Surgeon had been misled and treated the hip first instead of the spine. The clinical signs of these associated lesions, which are not uncommon, are described. This paper aims to draw the attention of Surgeons to the frequency of symptoms originating from the spine in patients more than 70 years old.

Aged↗
PubMed2001

[Effect of shock waves on hip prosthesis implantation (preliminary report)].

Revision of total hip arthroplasty has increased dramatically and it began to be a big problem, because of the number of reoperation is growing directly with the number of primoimplantation. Extraction of bone cement from the canal of the femur is timely and technically very difficult and related with many complications. Therapy by ESWL was applicated in clinical praxis for the first time in the therapy of urolithiasis and then choledocholithiasis. Now it is used in orthopedy for the therapy of pseudoarthrosis, entesopathia and anthores. In our experiment we used models of pork femur to which we implanted the endoprothesis to bone cement. We expouned these samples to ESWL and controlled the ability of releasing of the endoprothesis. We replayed the experiment for four times after an abnormal number of shockwaves (more than 8,000 shocks), in two cases endoprothesis release spontaneously, in one case we needed a little power to release it and in the four cases the releasing was not achieved. These results show the probable influence of the shockwaves between the layers metal-cement and cement-bone spongiosa.

Animals↗
PubMedDate not supplied

[Significance of arterial circulation disorders for the planning of hip prosthesis interventions].

Between 1980 and 1990 a total of 17 patients who had undergone or had been selected for total hip replacement were treated in the Department of Surgery at Münster University. Angiographic studies performed because of persistent symptoms revealed circulatory disorders of the pelvic floor. Vascular surgery was necessary to eliminate symptoms in these patients. Postoperative complications in 3 patients following total hip replacement were also only eliminated by vascular surgery. In the present authors' view, failure to recognize preoperatively existing arterial circulation disorders can lead to misdiagnosis and severe postoperative complications. Every hip replacement operation should be preceded by a thorough clinical and--if doubt persists--an angiological examination. Documented arterial circulation disorders should be eliminated by vascular surgery prior to hip surgery.

Aortography↗
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↗
PubMed1984

Mittelmeier's ceramic hip prosthesis.

The results are reported of 59 non-cemented ceramic hip prostheses, 29 of which have a follow-up of from one to three years. The technical details are described and the advantages of this type of prosthesis over the older cemented types are discussed. The results of this limited series, albeit with a comparatively short follow-up, are sufficiently encouraging to recommend the use of this prosthesis, when the indications are correct, in place of the cemented types.

Adult↗