Semimembranosus

Origin	Ischial tuberosity
Insertion	Medial surface of tibia
Action(s)	The semimembranosus helps to extend (straighten) the hip joint and flex (bend) the knee joint. It also helps medially rotate the knee.
Nerve Supply	The semimembranosus is innervated by the tibial part of the sciatic nerve.
Arterial Supply	Profunda femoris, gluteal artery
Physical Exam	Enter physical examination maneuvers for muscle
Clinical Importance	Enter clinical importance of muscle
Disease States	Enter links to pages where muscle involved
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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Semimembranosus

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Last Updated on June 27, 2024

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