Hip resurfacing requires larger acetabular cups than conventional hip replacement: A comparative analysis of 100 hips, based on radiographic templating

摘要

Acetabular bone loss is a matter for concern in hip resurfacing arthroplasty (HRA), as preservation of the femoral head and neck might demand a larger acetabular cup than in total hip arthroplasty (THA). Using radiographic templating, the cup size required for either THA or HRA was calculated on 100 pelvic films. First, the cup size was determined based on the dimensions of the acetabulum. Then, the cup size for HRA was evaluated taking into account the dimensions of the femoral headeck.