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Muscles of the Lower Extremity / Quadratus Femoris
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| Origin |
Lateral margin of obturator ring above ischial tuberosity |
| Insertion |
Quadrate tubercle and adjacent bone of intertrochanteric crest of proximal posterior femur |
| Action |
Rotates the hip laterally; also helps adduct the hip |
| Innervation |
Quadratus femoris branch of nerve to the quadratus femoris and inferior gemellus (L5, S1) |
Arterial
Supply |
Medial circumflex femoral artery |
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