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Sacrotuberous Ligament - Wikipedia, the Free Encyclopedia Sacrotuberous ligament - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Sacrotuberous_ligament Sacrotuberous ligament From Wikipedia, the free encyclopedia Ligament: Sacrotuberous ligament The sacrotuberous ligament (great or posterior sacrosciatic ligament) is situated at the lower and back part of the pelvis. It is flat, and triangular in form; narrower in the middle than at the ends. It runs from the sacrum (the lower transverse sacral tubercles, the inferior margins sacrum and the upper coccyx[1]) to the tuberosity of the ischium. The membranous falciform process of the sacrotuberous ligament was found to be absent in 13% of cadavers. When present it extends towards the ischioanal fossa travelling along the ischial ramus and fusing with the obturator fascia. Articulations of pelvis, anterior view, with greater sciatic foramen (labeled in red) and its boundaries. The sacrotuberous ligament contains the coccygeal branch of the inferior gluteal artery. The lower border of the ligament was found to be directly continuous with the tendon of origin of the long head of the Biceps femoris in approximately 50% of subjects[2]. Biceps femoris could therefore act to stabilise the sacroiliac joint via the sacrotuberous ligament. If the pudendal nerve becomes entrapped between this ligament and the sacrospinous ligament causing perineal pain, the sacrotuberous ligament is surgically severed to relieve the pain. Additional images Articulations of pelvis. Posterior view. Latin ligamentum sacrotuberale subject #80 309 (http://education.yahoo.com Gray's /reference/gray/subjects /subject?id=80#p309) From sacrum To tuberosity of the ischium 1 of 2 20/09/11 6:10 PM Sacrotuberous ligament - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Sacrotuberous_ligament Articulations of pelvis. The superficial The posterior aspect Nélatons line and Anterior view. branches of the of the rectum Bryants triangle. internal pudendal exposed by removing artery. the lower part of the sacrum and the coccyx. External links SUNY Figs 13:03-04 (http://ect.downstate.edu/courseware/haonline/figs/l13 /130304.htm) - "Deep muscles of the gluteal region with gluteus medius and maximus muscles removed." SUNY Figs 17:02-05 (http://ect.downstate.edu/courseware/haonline/figs/l17 /170205.htm) - "Posterior view of the bones and ligaments of the hip joint." SUNY Labs 41:os-0114 (http://ect.downstate.edu/courseware/haonline/labs/l41 /os0114.htm) - "The Female Perineum" SUNY Labs 42:12-0102 (http://ect.downstate.edu/courseware/haonline/labs/l42 /120102.htm) - "The Male Perineum and the Penis: Boundaries of the Ischioanal fossa" SUNY Anatomy Image 9075 (http://ect.downstate.edu/courseware/haonline /imgs/00000/9000/000/9075.jpg) Anatomy at Dartmouth hip/hip%20ligaments/ligaments7 (http://www.dartmouth.edu /~anatomy/hip/hip%20ligaments/ligaments7.html) References 1. ^ Marios Loukas,Robert G Louis Jr, Barry Hallner, Ankmalika A Gupta and Dorothy White. (2006) "Anatomical and surgical considerations of the sacrotuberous ligament and its relevance in pudendal nerve entrapment syndrome" Surg Radiol Anat 28(2): 163-169 2. ^ Vleeming, A., R. Stoeckart, et al. (1989). "The sacrotuberous ligament: a conceptual approach to its dynamic role in stabilizing the sacroiliac joint." Clinical Biomechanics 4(4): 200-203. This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated. Retrieved from "http://en.wikipedia.org/wiki/Sacrotuberous_ligament" Categories: Ligament stubs | Ligaments of the torso This page was last modified on 17 July 2011 at 02:14. Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. See Terms of use for details. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. 2 of 2 20/09/11 6:10 PM.
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