The Biomechanics Effect of Hamstring Flexibility on the Risk of Osgood-Schlatter Disease

Figure 5

Changes in quadriceps muscle force (a) and hamstring muscle force (b) during a gait cycle. The force is described as mean (hard line) ± standard deviation (shaded area). The vertical axis represents the difference in muscle force from the model with unadjusted hamstring optimal lengths.

(a)

(b)