The articularis genus (also known as the subcrureus muscle[1]) is a small skeletal muscle located anteriorly on the thigh just above the knee.
| Articularis genus muscle | |
|---|---|
 Anterior surface of right femur. Origin of articularis genus labelled at bottom middle of image. | |
| Details | |
| Origin | Femur |
| Insertion | Suprapatellar bursa |
| Artery | Femoral artery |
| Nerve | Femoral nerve |
| Actions | Pulling the suprapatellar bursa during extension of the knee |
| Identifiers | |
| Latin | musculus articularis genus |
| TA98 | A04.7.02.024 |
| TA2 | 2625 |
| FMA | 22437 |
| Anatomical terms of muscle | |
Structure
editIt arises from the anterior surface of the lower part of the body of the femur,[2] deep to the vastus intermedius,[3] close to the knee and from the deep fibers of the vastus intermedius.[2]
Its insertion is on the synovial membrane of the knee-joint.[2]
Blood supply
editIt is supplied by the lateral femoral circumflex artery.[2]
Innervation
editIt is innervated by branches of the femoral nerve (L2-L4).[2]
Variation
editFlat, wispy and highly variable,[4] sometimes consisting of several separate muscular bundles,[5] this muscle is without a distinct investing fascia and ranges 1.5–3 cm in width.[4]
It is usually distinct from the vastus intermedius, but occasionally blended with it.[5][needs update]
Function
editArticularis genus pulls the suprapatellar bursa superiorly during extension of the knee,[3] and prevents impingement of the synovial membrane between the patella and the femur.[2]
References
edit
This article incorporates text in the public domain from page 471 of the 20th edition of Gray's Anatomy (1918)
- ^ Toldt, C.; Dalla, R. A.; Paul, E. (1903). "606. Adductor magnus muscle. Obturator externus muscle. Subcrureus muscle". Creighton University. hdl:10504/17086. Retrieved 23 February 2021.
- ^ a b c d e f "Thigh to Foot Musculature". PT Central. Archived from the original on 15 July 2010. Retrieved 2010-08-17.
- ^ a b Agur, A. M. R.; Dalley, Arthur F. (2009). Grant's atlas of anatomy. Lippincott Williams & Wilkins. p. 414. ISBN 9780781770552. Retrieved 2010-08-17.
- ^ a b B Reider; JL Marshall; B Koslin; B Ring; FG Girgis (1981). "The anterior aspect of the knee joint" (PDF). The Journal of Bone and Joint Surgery. American Volume. 63 (3). J Bone Joint Surg Am. 1981;63:351-356.: 351–6. doi:10.2106/00004623-198163030-00004. PMID 7204430. Retrieved 2010-08-17.[permanent dead link]
- ^ a b Gray, Henry (1918). "The Muscles and Fasciæ of the Thigh". Yahoo Education. Archived from the original on 2009-12-22. Retrieved 2010-08-17.
External links
edit- Farshchian's Orthopedic Regenerative Series: The Knee; Articularis Genus (very clear illustration)
