• Jung Keun Choi, Jeffrey A Geller, Wenbao Wang, Jonathan D Nyce, and William Macaulay.
• Center for Hip & Knee Replacement (CHKR), New York-Presbyterian Hospital at Columbia University, New York, New York 10032, USA.
• J Arthroplasty. 2011 Aug 1; 26 (5): 765-70.

AbstractThe purposes of this study were to evaluate the accuracy and reliability of preoperative templating on conventional radiographs (CRs) for metal-on-metal hip resurfacing and to determine the factors affecting the accuracy. Four observers templated 80 CRs on 2 separate occasions in a blinded fashion. Eight independent variables were evaluated to investigate their effect on the accuracy of templating. The overall accuracy of templating within one size of the actual component was 80.6% for the femoral component and 98.5% for the acetabular component. Overall, the intraobserver and interobserver reliability was fair to substantial (κ = 0.22-0.61). Using multiple regression analysis, surgical time was the only factor that affected the accuracy of predicting the size of the acetabular component (P = .019). We conclude that CR templating for metal-on-metal hip resurfacing is a useful method for preoperative planning of the sizes of the respective implants and that surgeon experience does play a significant role in the accuracy of predicting component size during templating.Copyright © 2011 Elsevier Inc. All rights reserved.

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