Fig. 7.

Angle of trochlear sulcus at different time point. No significant difference in the angle of femoral sulcus between experimental groups and the sham group at 3 weeks after surgery. Mean angle of femoral sulcus in each experimental groups were greater in comparison with the control group at 12 weeks, which indicated the femoral trochlea became flat. Error bars indicate 95% confidence interval. Asterisks in the graph indicate statistical significance