FAILURE OF OSTEOINTEGRATION OF A PROXIMALLY-COATED NON-CEMENTED TAPERED STEM: IS THERE AN ANATOMIC PREDISPOSITION?
H.J. Cooper; A. Jacob; and J.A. Rodriguez Department of Orthopaedic Surgery, Lenox Hill Hospital, 130 East 77th Street, New York, NY 10075 Proximally-coated non-cemented tapered femoral stems have demonstrated excellent long-term clinical results. However, there is sparse literature reporting the incidence of failure of osteointegration in patients with this stem design. The aim of this study is to report this incidence and identify factors which may increase its risk. 206 elective primary total hip arthroplasties were performed consecutively with a single stem design over a three-year period. All patients were evaluated clinically and radiographically. Radiographic parameters were analyzed for any potential risk factors that may predispose to failure of osteointegration. Three of 206 hips failed to osteointegrate and subsequently underwent revision surgery, for an incidence of 1.5%. The average time to revision was 1.2 years. The presenting complaint was persistent pain and radiograph
