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Piriformis: Origin, Insertion, Action & Nerve Supply

Piriformis: The piriformis is a muscle in the gluteal region of the lower limb. It is one of the six muscles of the lateral rotator group. The piriformis muscle is a key landmark in the gluteal region. It is the most superior of the deep muscles.

piriformis muscle

Origin: Originates from the anterior surface of the sacrum. It then travels infero-laterally, through the greater sciatic foramen.
Insertion: It attaches to the greater trochanter of the femur.

Function: Lateral rotation and abduction.

Nerve Supply: Nerve to piriformis.

Muscles of the Lower Limb

Leg Muscles
Thigh Muscles
Foot Muscles

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