Origin | Ischial tuberosity |
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Insertion | Medial surface of tibia |
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Action(s) | The semimembranosus helps to extend (straighten) the hip joint and flex (bend) the knee joint. It also helps medially rotate the knee. |
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Nerve Supply | The semimembranosus is innervated by the tibial part of the sciatic nerve. |
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Arterial Supply | Profunda femoris, gluteal artery |
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Physical Exam | Enter physical examination maneuvers for muscle |
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Clinical Importance | Enter clinical importance of muscle |
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Disease States | Enter links to pages where muscle involved |
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Discussion | It may be reduced or absent, or double, arising mainly from the sacrotuberous ligament and giving a slip to the femur or adductor magnus. |
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