Articularis genu muscle
| Articularis genu muscle | |
|---|---|
 | |
| Anterior surface of right femur. Origin of articularis genu labelled on | |
| Latin | musculus articularis genus |
| Gray's | p.471 |
| Origin | femur |
| Insertion | suprapatellar bursa |
| Artery | femoral artery |
| Nerve | femoral nerve |
| Actions | Pulling the suprapatellar bursa during extension of the knee. |
The articularis genus (subcrureus) is a small skeletal muscle located anteriorly on the thigh just above the knee.
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]
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]
Blood supply
It is supplied by the lateral femoral circumflex artery.[1]
Innervation
It is innervated by branches of the femoral nerve (L2-L4).[1]
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]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "Thigh to Foot Musculature". PT Central. Archived from the original on 15 July 2010. Retrieved 2010-08-17.
- ↑ 2.0 2.1 Agur, A. M. R.; Dalley, Arthur F. (2009). "Grant's atlas of anatomy". Lippincott Williams & Wilkins. p. 414. Retrieved 2010-08-17.
- ↑ 3.0 3.1 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. Retrieved 2010-08-17.
- ↑ 4.0 4.1 Gray, Henry (1918). "The Muscles and Fasciæ of the Thigh". Yahoo Education. Retrieved 2010-08-17.
This article incorporates text from a public domain edition of Gray's Anatomy.
External links
- -905576371 at GPnotebook
- LUC art
- Farshchian's Orthopedic Regenerative Series: The Knee; Articularis Genu (very clear illustration)
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