|Insertion||Medial condyle of the tibia|
Extends the hip
Medially rotates tibia when knee is flexed
|Nerve||Tibial nerve of the sciatic plexus (L5, S1 and S2)|
|Artery||Profunda femoris and gluteal arteries|
Location & Overview
The semimembranosus muscle is located on the posterior and medial aspects of the thigh. It is one of the three hamstring muscles. The other two hamstring muscles are the biceps femoris muscle and the semitendinosus muscle. The semimembranosus muscle is the most medial of these three hamstring muscles. It is mostly covered by the semitendinosus muscle but the semimembranosus is a much flatter and wider shaped muscle. The semimembranosus muscle also shares relatively close origin and insertion points with the semitendinosus .
Origin & Insertion
The semimembranosus muscle is innervated by the tibial nerve of the sciatic plexus (L5, S1 and S2).
Blood is supplied to the semimembranosus muscle by the profunda femoris and gluteal arteries .
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Semimembranosus Muscle Flashcards
|↑1, ↑6||Moore KL, Agur AMR, Dalley AF. Clinically Oriented Anatomy. 8th ed. Philadelphia: Lippincot Williams & Wilkins; 2017.|
|↑2, ↑4||Rodgers CD, Raja A. Anatomy, Bony Pelvis and Lower Limb, Hamstring Muscle. [Updated 2021 Aug 11]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK546688/|
|↑3, ↑5||Afonso J, Rocha-Rodrigues S, Clemente FM, et al. The Hamstrings: Anatomic and Physiologic Variations and Their Potential Relationships With Injury Risk. Front Physiol. 2021;12:694604. Published 2021 Jul 7. doi:10.3389/fphys.2021.694604|
|↑7||Tomaszewski KA, Henry BM, Vikse J, Pękala P, Roy J, Svensen M, Guay D, Hsieh WC, Loukas M, Walocha JA. Variations in the origin of the deep femoral artery: A meta-analysis. Clin Anat. 2017 Jan;30(1):106-113. doi: 10.1002/ca.22691. Epub 2016 Feb 2. PMID: 26780216.|