Acetabular reconstruction in revision total hip arthroplasty using a bone graft substitute

Twenty acetabular reconstructions in revision total hip arthroplasty with severe loss of bone stock were performed combining the use of autogenous bone grafts, synthetical hydroxyapatite ceramic and reinforcement rings. The rings were fixed with screws on the host bone. The grafts fused within 4 months after the operation in all the cases. No migration of the acetabular component or lysis of the mixed graft was seen in 19 cases after 2 years. One implant failed because of malposition and was revised 6 months after the operation. These preliminary findings give rise to cautious optimism that this is a reliable method for acetabular reconstruction.