Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10081942 | The Journal of Arthroplasty | 2005 | 7 Pages |
Abstract
The success of knee arthroplasty is dependent on many factors. Postoperative extremity and component alignment are important determinants of outcome and longevity. Malalignment (>3°) results in higher failure rates. Computer-assisted navigation devices were developed to improve implant positioning. This study evaluated the early outcomes of a high-volume fellowship-trained surgeon relative to component positioning and limb alignment using an image-free navigation system. The navigation group consisted of 116 consecutive patients, and the conventional group consisted of 51 consecutive patients. The postoperative mechanical axis was within 3° of neutral mechanical alignment in 95% of the navigation cases vs 84% of the conventional cases (P < .02). The range of the alignment and component position measurements narrowed, and the undesired outliers decreased. Accuracy was improved with navigation. Navigation was a viable device to improve the outcome of total knee arthroplasty relative to limb and component alignment.
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Authors
Kevin C. MD, Knute C. MD, David C. MD,