Quadratus femoris muscle

The quadratus femoris muscle is a flat, quadrilateral skeletal muscle located in the gluteal region of the body. It is one of the six muscles in the lateral rotator group.

Anatomy

The quadratus femoris muscle originates from the ischial tuberosity of the pelvis and inserts into the intertrochanteric crest of the femur. It is situated below the inferior gemellus muscle and above the adductor magnus muscle.

Blood Supply

The muscle receives its blood supply from the inferior gluteal artery.

Innervation

The quadratus femoris muscle is innervated by the nerve to quadratus femoris, which arises from the sacral plexus (L4-S1).

Function

The primary function of the quadratus femoris muscle is to laterally rotate and adduct the thigh. It plays a crucial role in stabilizing the hip joint.

Clinical Significance

Injuries or conditions affecting the quadratus femoris muscle can lead to pain and limited mobility in the hip region. Conditions such as quadratus femoris syndrome involve the entrapment of the sciatic nerve by the muscle, leading to pain and discomfort.

See Also

• Gluteus maximus muscle
• Gluteus medius muscle
• Gluteus minimus muscle
• Piriformis muscle
• Obturator internus muscle
• Inferior gemellus muscle
• Superior gemellus muscle