Onto which two bones does the sartorius muscle attach?

The sartorius muscle, a long and narrow muscle that runs across the thigh, attaches to the ilium, specifically at the anterior superior iliac spine, and the tibia. This arrangement allows the sartorius to facilitate movements such as flexing, abducting, and laterally rotating the hip, as well as flexing the knee.

The attachment to the ilium provides the necessary leverage for hip movements, while its insertion on the tibia allows for the tibia to move in conjunction with the flexing of the hip and knee. This dual attachment is essential in various activities, including walking and running, as it helps coordinate movement across both the hip and knee joints, making it a critical muscle in the lower limb's functional mechanics.