Articularis genus muscle

Articularis genus muscle
Anterior surface of right femur. Origin of articularis genus labelled at bottom middle of image.
Details
OriginFemur
InsertionSuprapatellar bursa
ArteryFemoral artery
NerveFemoral nerve
ActionsPulling the suprapatellar bursa during extension of the knee
Identifiers
Latinmusculus articularis genus
TA98A04.7.02.024
TA22625
FMA22437
Anatomical terms of muscle

The articularis genus (also known as the subcrureus muscle[1]) 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,[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

It is supplied by the lateral femoral circumflex artery.[2]

Innervation

It is innervated by branches of the femoral nerve (L2-L4).[2]

Variation

Flat, 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

Articularis 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

Public domain This article incorporates text in the public domain from page 471 of the 20th edition of Gray's Anatomy (1918)

  1. ^ 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.
  2. ^ a b c d e f "Thigh to Foot Musculature". PT Central. Archived from the original on 15 July 2010. Retrieved 2010-08-17.
  3. ^ 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.
  4. ^ 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]
  5. ^ 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.
  • Farshchian's Orthopedic Regenerative Series: The Knee; Articularis Genus (very clear illustration)