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J Arthroplasty. 2012 Feb;27(2):310-6. doi: 10.1016/j.arth.2011.03.048. Epub 2011 May 31.

Computer-assisted femoral head-neck osteochondroplasty using a surgical milling device an in vitro accuracy study.

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  • 1Department of Orthopedic Surgery, Inselspital, University of Berne, Switzerland.


Surgical navigation might increase the safety of osteochondroplasty procedures in patients with femoroacetabular impingement. Feasibility and accuracy of navigation of a surgical reaming device were assessed. Three-dimensional models of 18 identical sawbone femora and 5 cadaver hips were created. Custom software was used to plan and perform repeated computer-assisted osteochondroplasty procedures using a navigated burr. Postoperative 3-dimensional models were created and compared with the preoperative models. A Bland-Altmann analysis assessing α angle and offset ratio accuracy showed even distribution along the zero line with narrow confidence intervals. No differences in α angle and offset ratio accuracy (P = 0.486 and P = 0.2) were detected between both observers. Planning and conduction of navigated osteochondroplasty using a surgical reaming device is feasible and accurate.

Copyright © 2012 Elsevier Inc. All rights reserved.

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