A non-clinically statistically significant difference regarding the femoral and tibial cartilage thickness was obtained in both groups one ( P = 0.005 , CI : -0.43 -0.82 and P = 0.037 , CI : -0.44 -0.80 respectively ) and two ( P = 0.025 , CI : -0.45 -0.79 and P = 0.035 , CI : -0.29 -0.96 respectively ) .