From Wikipedia, the free encyclopedia
Muscle of the lower back arising by its apex from the spine of the ischium
The coccygeus muscle or ischiococcygeus is a
muscle of the
pelvic floor located posterior to
levator ani and anterior to the
sacrospinous ligament.
Structure
The coccygeus muscle is posterior to
levator ani and anterior to the
sacrospinous ligament in the
pelvic floor. It is a triangular plane of muscular and tendinous fibers. It arises by its apex from the spine of the
ischium and
sacrospinous ligament.
[3]
[4] It is inserted by its base into the margin of the
coccyx and into the side of the lowest piece of the
sacrum.
[3]
[4]
In combination with the
levator ani, it forms the
pelvic diaphragm.
[5]
The
pudendal nerve runs between the coccygeus muscle and the
piriformis muscle, superficial to the coccygeus muscle.
[6]
Nerve supply
The coccygeus muscle is innervated by the
pudendal nerve, which runs between it and the
piriformis muscle.
[7]
Function
The coccygeus muscle assists the
levator ani and
piriformis muscle in closing in the back part of the outlet of the
pelvis.
[8] This helps to support the
vagina in
women, and the other pelvic organs.
[8]
See also
References
This article incorporates text in the
public domain from
page 424 of the 20th edition of
Gray's Anatomy (1918)
-
^ Essential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 2 ed. 2002. Page 217
-
^
"uams.edu". Archived from
the original on 2007-12-16. Retrieved 2007-12-09.
- ^
a
b Ho, MAT H.; Bhatia, NARENDER N. (2007-01-01), Lobo, Rogerio A. (ed.),
"CHAPTER 51 - Lower Urinary Tract Disorders in Postmenopausal Women", Treatment of the Postmenopausal Woman (Third Edition), St. Louis: Academic Press, pp. 693–737,
doi:
10.1016/b978-012369443-0/50063-6,
ISBN
978-0-12-369443-0, retrieved 2021-02-07
- ^
a
b Sokol, Andrew I.; Walters, Mark D. (2007-01-01), Sokol, Andrew I.; Sokol, Eric R. (eds.),
"Chapter 23 - Pelvic Organ Prolapse and Pelvic Floor Dysfunction", General Gynecology, Philadelphia: Mosby, pp. 543–581,
doi:
10.1016/b978-032303247-6.10023-1,
ISBN
978-0-323-03247-6, retrieved 2021-02-07
-
^ Barone, William R.; Abramowitch, Steven D.; Moalli, Pamela A. (2015-01-01), Badylak, Stephen F. (ed.),
"Chapter 13 - Host Response to Biomaterials for Pelvic Floor Reconstruction", Host Response to Biomaterials, Oxford: Academic Press, pp. 375–423,
doi:
10.1016/b978-0-12-800196-7.00013-x,
ISBN
978-0-12-800196-7, retrieved 2021-02-07
-
^ Bennett, Richard C.; Peters, Kenneth M. (2008-01-01), Raz, Shlomo; Rodríguez, Larissa V. (eds.), "Chapter 24 - PUDENDAL NERVE STIMULATION", Female Urology (Third Edition), Philadelphia: W.B. Saunders, pp. 284–289,
doi:
10.1016/b978-1-4160-2339-5.50073-2,
ISBN
978-1-4160-2339-5
-
^ H. Kim, Daniel; A. Murovic, Judith (2008-01-01), Kim, Daniel H.; Midha, Rajiv; Murovic, Judith A.; Spinner, Robert J. (eds.),
"11 - Lower extremity nerve injuries", Kline and Hudson's Nerve Injuries (Second Edition), Edinburgh: W.B. Saunders, pp. 209–278,
doi:
10.1016/b978-0-7216-9537-2.50019-0,
ISBN
978-0-7216-9537-2, retrieved 2021-02-07
- ^
a
b Muir, Tristi W. (2008-01-01), Raz, Shlomo; Rodríguez, Larissa V. (eds.),
"Chapter 74 - POSTERIOR WALL PROLAPSE: SEGMENTAL DEFECT REPAIR", Female Urology (Third Edition), Philadelphia: W.B. Saunders, pp. 729–736,
doi:
10.1016/b978-1-4160-2339-5.50123-3,
ISBN
978-1-4160-2339-5, retrieved 2021-02-07
External links