The sartorius is the longest muscle of the body and may be seen superficially in the thigh region. This muscles originates at the hip and inserts at the knee. The sartorius has many functions, primarily acting as a flexor of the hip. You can stretch this muscle by performing the opposite movement to hip flexion, which is hip extension. When stretching the sartorius via hip extension, you will also be stretching the other hip flexor muscles. These include the iliopsoas, tensor fasciae latae, rectus femoris, pectineus, adductor longus and adductor brevis.
Kneeling Hip Flexor Lunging Stretch
Place your right knee down on the floor.
Lunge forward with your left foot and place it on the floor with your left thigh about parallel to the floor.
Bring your hips forward and position your torso upright.
Put your hands on your left thigh for support.
Maintain this stretched position for 15 to 30 seconds and then repeat the stretch with the other side.
Bent-Over Hip Flexor Lunging Stretch
Lunge forward with your left foot until your left thigh is near parallel to the ground.
Move your hips forward.
Lean forward a bit at the waist.
Place your hands on top of your left thigh for support.
Stay in this stretched position for 15 to 30 seconds and then repeat the stretch with the opposite side.
Standing Hip Flexor Lunging Stretch
Stand about 2 feet away from the weight bench and face it.
Lunge forward with your left leg and put your left foot on the bench, with your left thigh positioned about parallel to the bench.
Move your hips forward and position your torso upright.
Position your hands by your sides for support.
Hold this stretched position for 15 to 30 seconds and then repeat the stretch with the other side.
