Up to date there are only few reports in literature on the long term survival of uncemented stems. As for cemented THA, 10 year survival of at least 90% is required for any THA. We followed the first 354 consecutive implantations of an uncemented, straight femoral stem (CLS, Zimmer Inc, Warsaw, USA) in 326 patients. Mean time of follow-up evaluation was 17 years (range, 15-20 years).Introduction
Materials and methods