Effectiveness of an acetabular positioning device in primary total hip arthroplasty.

To evaluate the efficacy of a commercially available acetabular positioning device, we performed a prospective evaluation of 40 consecutive patients undergoing primary total hip arthroplasty. All surgery was performed by the same surgeon, in the same operating room, and on the same operating table. The acetabular positioning device was designed to place the component in 45 degrees of abduction.

Periprosthetic fractures of the femur after hip arthroplasty: an analysis of 99 patients.

The medical records and radiographs of 99 patients treated for a periprosthetic femur fracture after total hip arthroplasty over a 17-year period at a single institution were prospectively reviewed. Fractures were classified according to the Vancouver system and stratified as to treatment method. Sixty-six patients had complete records available and a minimum of 12 months follow-up.

Impingement of acetabular cups in a hip simulator: comparison of highly cross-linked and conventional polyethylene.

We hypothesized that the reduction in toughness that accompanies elevated levels of cross-linking in ultrahigh-molecular weight polyethylene would lead to increased wear and damage in acetabular cups under conditions of impingement with the neck of the femoral component. Test cups were exposed to 2.8, 10, and 20 Mrad of gamma irradiation and were tested in a simulator, incorporating impingement during every wear cycle.

The efficacy of 500 CentiGray radiation in the prevention of heterotopic ossification after total hip arthroplasty: a prospective, randomized, pilot study.

A prospective, randomized, pilot study comparing 500 cGy (group A) versus 1,000 cGy (group B) radiation treatment for the prevention of heterotopic bone in a consecutive group of high-risk patients undergoing total hip arthroplasty was performed. Treatment was initiated within ninety-six hours and given in equal, divided doses: 2 doses for group A and 5 doses for group B. No statistically significant difference was found in the demographics between the 2 groups.

Coccidioides immitis osteomyelitis: a case series review.

A retrospective chart review and telephone follow-up was conducted on patients who were treated for disseminated coccidioidomycosis involving bones or joints at the Naval Medical Center, San Diego, California from 1993-1999. Thirteen patients were identified, with average follow-up of 36 months. Six patients underwent surgical debridement and systemic medical therapy, and seven patients were treated medically only.