Lateral femoral sliding osteotomy in total knee arthroplasty for fixed valgus deformity

Abstract

We treated 13 patients who had a fixed valgus deformity of the knee with a semi-constrained total knee arthroplasty combined with advancement of the lateral collateral ligament by means of a lateral femoral condylar sliding osteotomy. At follow-up of between 1 and 6.5 years, all patients were assessed using the Knee Society score. The mean knee score improved from 32 to 88 and the functional score from 45 to 73. The mean tibiofemoral angle was corrected from 191 to 180°. There was no postoperative tibiofemoral or patellar instability and, in most knees, distal transposition of the lateral femoral condyle achieved satisfactory stable alignment.