A Safe Zone for Acetabular Component Position in Metal-On-Metal Hip Resurfacing Arthroplasty
THOMAS P. GROSS, MD, FEI LIU, PHD MIDLANDS ORTHOPAEDICS, P.A. COLUMBIA, SC, USA
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Adverse wear reaction after metal-on-metal hip resurfacing has been described as a new failure mechanism. Established causes include poor
implant design, small implant size and acetabular malpositioning. The purpose of this study is to establish a safe zone of acetabular inclination angle (AIA) in order to reduce the high metal ion level rate after hip resurfacing.
761 cases in 613 patients with minimal two years follow-up had both metal ion levels and quality pelvis X-ray available in our database and are included in this study. The UCLA activity score, femoral shaft … Read the rest