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Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: Q:

Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: Q

Quadratus Femoris

Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD

Peer Review Status: Internally Peer Reviewed


Quadratus femoris may be fused with the inferior gemellus or with adductor magnus, replaced by a large inferior gemellus or oturator internus, or may be absent altogether (1-2%). It may be divided at its femoral insertion into two parts: one posterior, with the normal attachment, and the other anterior, with insertion onto the intertrochanteric crest.

Hallett and Schwegel reported it absent and replaced by an unusually thick (large) obturator internus muscle.

Syn.: Quarré fémoral.


References

Bellamy, E. (1875) Note on the absence of the quadratus femoris muscle and on a spine possessing a sixth lumbar vertebra, the first rib being rudimentary. J. Anat. Physiol. 9:185-186.

Gruber, W. (1879) Nachtrag zu den Beobachtungen über den Mangel des Musculus quadratus femoris. Arch. Path. Anat. Physiol. Klin. Med. 77:31.

Henle, J. (1871) Handbuch der Muskellehre des Menschen, in Handbuch der systematischen Anatomie des Menschen. Verlag von Friedrich Vieweg und Sohn, Braunschweig.

Macalister, A. (1875) Observations on the muscular anomalies in the human anatomy. Third series with a catalogue of the principal muscular variations hitherto published. Trans. Roy. Irish Acad. Sci. 25:1-130.

Stibbe, E.P. (1930) Anatomical notes: Complete absence of the quadratus femoris. J. Anat. 64:97.

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