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.
