Tensor fasciae latae
This muscle is innervated by the superior gluteal nerve and performs the functions of hip flexion and abduction. These actions help to maintain one foot ahead of the other, as occurs in walking. It also provides lateral (side-to-side) stability to the knee. The muscle performs the role of a supplement ligament and works with the minimus, medius, and upper maximum fibers.
The tensor fasciae latae also helps to stabilize the pelvis on the top of the femur (thigh) bone when a person is standing up straight. This muscle is used considerably during physical activities such as skiing or horseback riding. An imbalance of the pelvic area may occur if this muscle is shortened or strained.
The arterial supply to this muscle is through a branch arising from the profunda femoris, which is known as the lateral circumflex femoral artery.