Articularis genus muscle
| Articularis genus muscle | |
|---|---|
 Anterior surface of right femur. Origin of articularis genus labelled on | |
| 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 |
| TA | A04.7.02.024 |
| FMA | 22437 |
The articularis genus (subcrureus) is a small skeletal muscle located anteriorly on the thigh just above the knee.
Structure
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]
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]
Function
Articularis genus 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]
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
- 1 2 3 4 5 6 "Thigh to Foot Musculature". PT Central. Archived from the original on 15 July 2010. Retrieved 2010-08-17.
- 1 2 Agur, A. M. R.; Dalley, Arthur F. (2009). Grant's atlas of anatomy. Lippincott Williams & Wilkins. p. 414. Retrieved 2010-08-17.
- 1 2 B Reider; JL Marshall; B Koslin; B Ring; FG Girgis (1981). "The anterior aspect of the knee joint" (PDF). J Bone Joint Surg Am. 1981;63:351-356. Retrieved 2010-08-17.
- 1 2 Gray, Henry (1918). "The Muscles and Fasciæ of the Thigh". Yahoo Education. Retrieved 2010-08-17.
External links
- -905576371 at GPnotebook
- Farshchian's Orthopedic Regenerative Series: The Knee; Articularis Genus (very clear illustration)