Articularis genu muscle
| Articularis genu muscle | |
|---|---|
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| Anterior surface of right femur. Origin of articularis genu labelled on | |
| Latin | musculus articularis genus |
| Gray's | subject #128 471 |
| Origin | femur |
| Insertion | suprapatellar bursa |
| Artery | femoral artery |
| Nerve | femoral nerve |
| Actions | Pulling the suprapatellar bursa during extension of the knee. |
The articularis genu (subcrureus) is a small skeletal muscle located anteriorly on the thigh just above the knee.
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[edit] Origin and insertion
It arises from the anterior surface of the lower part of the body of the femur,[1] deep to the vastus intermedius,[2] close to the knee and from the deep fibers of the vastus intermedius.[1]
Its insertion is on the synovial membrane of the knee-joint.[1]
[edit] Action
Articularis genu pulls the suprapatellar bursa superiorly during extension of the knee,[2] and prevents impingement of the synovial membrane between the patella and the femur.[1]
[edit] Blood supply
It is supplied by the lateral femoral circumflex artery.[1]
[edit] Innervation
It is innervated by branches of the femoral nerve (L2-L4).[1]
[edit] Variation
Flat, wispy and highly variable,[3] sometimes consisting of several separate muscular bundles,[4] this muscle is without a distinct investing fascia and ranges 1.5–3 cm in width.[3]
It is usually distinct from the vastus intermedius, but occasionally blended with it.[4]
[edit] References
- ^ a b c d e f "Thigh to Foot Musculature". PT Central. http://www.ptcentral.com/muscles/musclelegs.html. Retrieved 2010-08-17.
- ^ a b Agur, A. M. R.; Dalley, Arthur F. (2009). "Grant's atlas of anatomy". Lippincott Williams & Wilkins. p. 414. http://books.google.com/books?id=H20V4pCpACYC&pg=PA414. Retrieved 2010-08-17.
- ^ a b B Reider, JL Marshall, B Koslin, B Ring and FG Girgis (1981). "The anterior aspect of the knee joint". J Bone Joint Surg Am. 1981;63:351-356.. http://www.ejbjs.org/cgi/reprint/63/3/351.pdf. Retrieved 2010-08-17.
- ^ a b Gray, Henry (1918). "The Muscles and Fasciæ of the Thigh". Yahoo Education. http://education.yahoo.com/reference/gray/subjects/subject/128#p471. Retrieved 2010-08-17.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
[edit] External links
- -905576371 at GPnotebook
- LUC art
- Farshchian's Orthopedic Regenerative Series: The Knee; Articularis Genu (very clear illustration)
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