Bi-articular hemiarthroplasty of the hip: a 7-year follow-up

A bi-articular prostheses was used to replace the femoral head in 323 patients over 7 years in an attempt to reduce the incidence of acetabular erosion, which has been reported by others who have used different types of prostheses. No erosion of the acetabulum has yet been found in our series, but from the point of view of cost, we consider that the use of this prosthesis should be restricted to active younger patients.