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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 544 - 544
1 Sep 2012
Hoppe S Frauchiger L Mainzer J Ballmer P Hess R Zumstein M
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Background

Navigation in total knee replacement is controversially discussed in the literature. In our previous study, femoral component positioning was more accurate with computed navigation than with conventional implantation techniques, however tibial positioning showed similar results. Moreover there were no differences between image-free and image-based navigation techniques. To what extent more accurate femoral positioning has an impact on the clinical mid-term follow up is not known.

Methods

At a mean follow-up interval of 5.3 years, seventy-one patients (84.5%) returned for a review and were examined clinically and radiographically, with use of a methodology identical to that used preop and at 2 years, using the subjective value, the Knee Society Score (KSS), and a.p. and true lateral standard radiographs respectively. Complications, re-operations, persisting pain and resulting range of motion were registered.