Recurrent Hemarthrosis Secondary to Erosive Patellofemoral Arthritis Treated with Arthroplasty: A Report of 3 Cases.

Case: Three patients presented with recurrent hemarthrosis secondary to erosive patellofemoral arthritis. Recurrent hemarthrosis from the eroded patellofemoral subchondral bone has not been well described. Each patient presented with symptoms secondary to painful effusions that were identified by aspiration.

Giardia lamblia Reactive Arthritis Mimicking Acute Periprosthetic Knee Infection: A Case Report.

Case: A healthy 49-year-old man with a well-functioning total knee replacement developed a painful swollen knee. The erythrocyte sedimentation rate was 12 mm/hour, and C-reactive protein was 20.3 mg/L.

Subtrochanteric femur fracture after core decompression and placement of a tantalum strut for osteonecrosis of the femoral head.

Multiple treatment options have been described to treat osteonecrosis of the femoral head, all with the goal of slowing or reversing the disease process and preventing the need for arthroplasty in a young patient population. Core decompression of the femoral head to allow revascularization is a commonly used technique that can now be supplemented by placement of the Osteonecrosis Intervention Implant (Zimmer, Warsaw, Ind). It consists of a tantalum strut that acts as a buttress for the subchondral bone of the femoral head.