Rotation & Torsion of the Leg in Osteoarthritis of the Knee

We studied on the rotation and tibial torsion of the leg in both normal and osteoarthritis of the knees using the horizontal cross rotatory tomography.Method: With the knee full extended, tomographs were taken at following three levels and measured, calculated for t-test of two independent means. (P=0.05)1 femoral condyles 2 tibial condyles just below the articular surface 3 malleoli Results: 1 External rotation of the leg at knee joint increases in osteoarthritis com pared with normal knees.2 The mean angle of the tibial torsion in osteoarthritis is not different statistically significantly from normal knees.3 In operation, it is important not only to correct varus deformity but also excessive external rotation.