Abstract
It is important to understand the mechanism of the healthy person in order to develop therapeutic exercises for orthopedic diseases. If we can understand the mechanism of the healthy person, we can devise mechanisms of compensation movements and abnormal movements for the patients. Consequently, the method of the evaluation and the therapeutic technique will considerably develop. Here, I explain in detail, the motor function of the hamstrings that are evaluated and therapeutic techniques in "knee-in" and "knee-out".
