Polyethylene wear and osteolysis is associated with high revision rate of a small sized porous coated THA in patients with hip dysplasia.

The outcome of 25 primary THAs in patients with hip dysplasia using the AML Bantam femoral stem (DePuy) is reported. Age at operation averaged 43 ± 10 years. Twenty-two of 25 stems were cementless.

High complication rate in revision total hip arthroplasty in juvenile idiopathic arthritis.

Background: Revision total hip arthroplasty (THA) in patients with juvenile idiopathic arthritis (JIA) is challenging as a result of the patient's young age, systemic disease, multiple affected joints, small proportions, and bone loss. The intermediate- to long-term results of these surgeries remain unknown.

Questions/purposes: The purpose of this study is to determine the (1) functional outcomes; (2) surgical complications; and (3) frequency of reoperation or revision after revision THA for JIA.

Outcome of primary total hip arthroplasty in Charnley Class C patients with juvenile idiopathic arthritis: a case series.

The outcome and complications of 37 primary total hip arthroplasties by one surgeon in 24 patients with Charnley Class C juvenile idiopathic arthritis with up to 19.6 years follow-up are reported. Twenty-six femoral components were cementless; all acetabular components were cementless with screws.

Revision total hip arthroplasty in juvenile chronic arthritis: 17 revisions in 11 patients followed for 4-12 years.

Background: Revision total hip arthroplasty (THA) in patients with juvenile chronic arthritis (JCA) is complicated by the young age of the patient, poor bone stock and small physical proportions. We report the complications and outcome of a prospective series of 17 revision THAs in Charnley class C JCA patients.

Methods: 15 acetabular components and 10 femoral components were revised.

Cemented total knee arthroplasty in patients with juvenile rheumatoid arthritis.

Unlabelled: The optimal techniques and implants for total knee arthroplasty in patients with juvenile rheumatoid arthritis are controversial. We report the functional outcomes and complications of a series of 17 cemented total knee arthroplasties done by one surgeon during a 10-year period in which off-the-shelf implants were used, the posterior cruciate ligament was excised, and a lateral retinacular release was done. Preoperatively, all knees had severe loss of normal joint space and osteopenia on 3-foot, standing AP radiographs, lateral radiographs, and patellofemoral views.

Revision total knee arthroplasty using large distal femoral augments for severe metaphyseal bone deficiency: a preliminary study.

Managing severe structural femoral metaphyseal bone loss in revision total knee arthroplasty is a challenging problem facing the revision knee surgeon. This study assesses the use of large (30 mm) metal distal femoral augments to compensate for severe bone deficiencies. Hospital for Special Surgery scores, Knee Society scores, and range of motion improved after implantation of femoral components with 30-mm distal femoral augments.