Lateral epicondylar osteotomy using computer navigation in total knee arthroplasty for rigid valgus deformities.

Extensive release of posterolateral structures may be required to correct rigid and severe valgus deformities during total knee arthroplasty. Current techniques are technically difficult, may not accurately restore soft tissue balance, and are associated with postoperative complications. Computer navigation while performing lateral femoral epicondylar osteotomy allows precise, controlled, quantitative lengthening of lateral structures and restoration of optimum soft tissue balance and alignment.