Sizing Up the Sartorius Muscle

You may not be familiar with the sartorius muscle, but you’ve no doubt flexed it during countless lower-body exercises, stretches and yoga poses. The long, bandlike muscle runs down the length of the thigh, starting at the anterior superior iliac spine (ASIS) on the outer edge of the hip and wrapping inward to the medial surface of the tibia behind the knee. As a two-joint muscle, the sartorius seamlessly serves both the hip and the knee. When acting on the hip joint, it works to flex, abduct and laterally rotate…