Long-term follow-up of metal-on-metal total hip replacement.

Metal-on-metal articulations were reintroduced to reduce polyethylene particle-induced osteolysis. Elevated serum metal levels have been detected at short- and intermediate-term follow-up. There is little knowledge about long-term effects of increased ionic metal generation.

Cementless total hip arthroplasty with the rectangular titanium Zweymuller stem. A concise follow-up, at a minimum of fifteen years, of a previous report.

Between October 1986 and November 1987, 208 total hip arthroplasties were performed with use of the cementless Zweymüller stem and a threaded cup in 200 consecutive patients. Of 102 patients (108 hips) who were available for follow-up at a minimum of 180 months postoperatively, eighty-three (eighty-nine hips) had the primary joint replacement still intact. No stem had been revised because of aseptic loosening, but we found various degrees of osteolysis around sixteen (18%) of the implants.

Prognostic factors in metastatic renal cell carcinoma: metastasectomy as independent prognostic variable.

Prognostic and predictive factors in patients with metastatic renal cell carcinoma (MRCC) have been evaluated from untreated patients or patients on several different treatment approaches. The aim of this analysis was to define prognostic and predictive factors in patients treated uniformly with a low-dose outpatient cytokine combination. The relationship between patient-, tumour-, and treatment-related factors was analysed in 99 patients with MRCC.

[Prevention of heterotopic ossification after THA with indomethacin: analysis of risk factors].

Aim: Several risk factors are associated with heterotopic bone formation following total hip replacement. All these risk factors were defined in cohorts without any treatment against postoperative ectopic bone. The aim of this prospective study was to reveal risk factors for the development of postoperative ossifications in patients who underwent a 7-day course of indomethacin therapy.

Prevalence of aneurysmal and solitary bone cysts in young patients.

Aneurysmal and solitary bone cysts develop most commonly during skeletal growth. The objective of our epidemiologic study was to evaluate the prevalence, recurrence rate, and probability of recurrence-free survival for aneurysmal and solitary bone cysts in young patients. We did a population-based analysis of 141 histologically confirmed cases.

Rotator cuff tears in asymptomatic individuals: a clinical and ultrasonographic screening study.

Objective: To determine the prevalence and clinical impact of rotator cuff tears in asymptomatic volunteers.

Materials And Methods: Sonographic examinations of the shoulder of 212 asymptomatic individuals between 18 and 85 years old were performed by a single experienced operator. The prevalence and location of complete rotator cuff tears were evaluated.

Endothelial precursor cells in the synovial tissue of patients with rheumatoid arthritis and osteoarthritis.

Objective: To find evidence for the presence of endothelial precursor cells, which can induce new vessel formation, in the synovial tissue of patients with rheumatoid arthritis (RA) and osteoarthritis (OA).

Methods: Precursor cells in the synovial tissue of 18 RA patients and 15 OA patients were identified by immunohistochemistry, morphometric analysis, and confocal laser scanning microscopy using the following phenotype markers: CD31, CD34, STRO-1, CD133, vascular endothelial growth factor receptor 2 (VEGFR-2), and CXCR4. The presence of CD31, CD34, CD133, VEGFR-2, and CXCR4 messenger RNA in the synovial tissue was determined by reverse transcriptase-polymerase chain reaction, and the message for CXCR4 was quantified by an RNase protection assay.

Suprascapular nerve entrapment. A meta-analysis.

We performed a review of the literature between 1959 and 2001. We found 88 cases of suprascapular nerve entrapment, which fulfilled our inclusion criteria. Suprascapular nerve entrapment is rare and mainly occurs in patients under 40 years of age.

Radiation synovectomy with (166)Ho-ferric hydroxide: a first experience.

Unlabelled: Radiation synovectomy (RS) is indicated when conventional pharmacologic treatment of chronic synovitis has not relieved its symptoms. The use of radionuclides that are bound to ferric hydroxide (FH) particles has been shown to be effective and safe for this procedure. (166)Ho-FH macroaggregates offer promising properties for RS but there is a lack of clinical data.

Distinction between supraspinatus, infraspinatus and subscapularis tendon tears with ultrasound in 332 surgically confirmed cases.

The aim of this retrospective study was to determine the diagnostic value of preoperative ultrasonography for the characterisation of size and location of the involved tendons. in 332 consecutive patients who underwent surgery, all preoperative ultrasonographic reports were reviewed and ultrasound (US) and surgical findings were compared. Ultrasound criteria for cuff tears were complete nonvisualisation of the cuff tendons or localised absence and focal discontinuity.

[Risk factors for dislocation of a cementless total hip endoprosthesis--a statistical analysis].

Aim: This retrospective study aimed at the statistical identification of risk factors for dislocation for a certain cementless hip endoprothesis.

Material And Method: At our department 2605 primary total hip arthroplasties were performed between 1987 and 1997. In 40 patients (1.