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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 243 - 243
1 Sep 2012
Bragdon C Malchau H Greene M Doerner M Emerson R Gebuhr P Huddleston J Cimbrelo E
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Introduction

Proper cup positioning is a critical component in the success of total hip arthroplasty surgery. A multicenter study has been initiated to study a new type of highly cross-linked polyethylene. This study provides a unique opportunity to a review the acetabular cup placement of over 500 patients implanted in the past 2 years from 13 medical centers from the U.S., Mexico, and Europe.

Methods

482 patients have received primary total hip arthroplasty using components from a single manufacturer in 5 centers in the US and Mexico and 7 centers in Europe. The acetabular anteversion and inclination were measured in post-operative radiographs. An acceptable window of cup position is defined at 5–25° of anteversion and 30–45° of inclination.