Cancellous Bone Chip Grafting for Acetabular Deficiency in Primary Total Hip Arthroplasty: A Radiographic Analysis

We performed cementless total hip arthroplasty (THA) with cancellous bone chip grafting for acetabular deficiency in seven hips and reviewsd radiographic findings of grafted bone.The mean age at operation was 55.6 years (range: 46 to 72) and the follow up period was 23 months (range: 8 to 53 months). The grafts covered 22% to 40% (mean 32%) of the socket. In all cases, union of the grafts was achieved within one year and remodeling of the grafts occurred within 6 months. Extensive absorption of the grafts was not observed. Minor radiolucent line was seen in four hips and heterotropic ossification in two. There were no problems concerning socket stability.These results suggest that cancellous bone chip grafting is available for acetabular deficiency in THA.