Ligament: Posterior sacrococcygeal ligament
Articulations of pelvis. Posterior view. (Superficial posterior sacrococcygeal ligament labeled at bottom left.)
Latin	ligamentum sacrococcygeum posterius/dorsale [profundum/superficiale]
Gray's	subject #80 309
From	Sacrum
To	Coccyx

The posterior sacrococcygeal ligament or dorsal sacrococcygeal ligament^[1] is a ligament which stretches from the sacrum to the coccyx and thus dorsally across the sacrococcygeal symphysis shared by these two bones.

Contents 1 Deep part 2 Superficial part 3 See also 4 Notes 5 References

This ligament is divisible in two parts: A short deep part which unites the two bones, and a larger superficial portion which completes the lower back part of the sacral canal. On either side, two lateral sacrococcygeal ligaments run between the transverse processes of the coccyx and the inferior lateral angle of the sacrum.^[2]

It is in relation, behind, with the Glutæus maximus.

[edit] Deep part

The deep dorsal sacrocyccygeal ligament is a continuation of the posterior longitudinal ligament^[1]. A flat band arising inside the sacral canal, posteriorly at the orifice of the fifth sacral segment, it descends to the dorsal surface of the coccyx under its longer fellow described below.^[3]

[edit] Superficial part

The superficial dorsal sacrococcygeal ligament originates on the free margin of the sacral hiatus to attach on the dorsal surface of the coccyx. It closes the posterior aspect of the most distal part of the sacral canal and corresponds to the ligamenta flava.^[3]

[edit] See also

• Anterior sacrococcygeal ligament
• Coccydynia (coccyx pain, tailbone pain)
• Ganglion impar

[edit] Notes

[edit] References

• Morris, Craig E. (2005). Low Back Syndromes: Integrated Clinical Management. McGraw-Hill. ISBN 0071374728. http://books.google.se/books?id=EwKCu-Fti0YC&pg=PA59. 
• "deep dorsal sacrococcygeal ligament". On-line Medical Dictionary. 2000-03-05. http://cancerweb.ncl.ac.uk/cgi-bin/omd?deep+posterior+sacrococcygeal+ligament. Retrieved 2008-10-13. 
• Sinnatamby, Chummy S.; Last, Raymond Jack (2006). Last's Anatomy: Regional and Applied. Elsevier Health Sciences. ISBN 0443100330. http://books.google.se/books?id=EZRdj4LeVooC&pg=PA335. 

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 As such, some of the information contained within it may be outdated.

v • d • e Joints and ligaments of torso (TA A03.02-04, GA 3.299) Vertebral column Syndesmosis articulations of vertebral bodies: anterior longitudinal ligament · posterior longitudinal ligament articulations of vertebral arches: ligamenta flava · supraspinous ligament (nuchal ligament) · interspinal ligament · intertransverse ligament Synchondrosis intervertebral disc (annulus fibrosus, nucleus pulposus) Synovial joint Atlanto-axial (lat + med) capsule · atlantoaxial ligaments (anterior, posterior) · Cruciate ligament of atlas (Transverse ligament of atlas) Alar ligament · Apical ligament of dens · Tectorial membrane of atlanto-axial joint Zygapophysial no ligaments Lumbosacral iliolumbar ligament Sacrococcygeal anterior sacrococcygeal ligament · posterior sacrococcygeal ligament Thorax Costovertebral articulation of head of rib: radiate ligament · interarticular ligament costotransverse: Lumbocostal ligament Sternocostal interarticular sternocostal ligament · radiate sternocostal ligaments · costoxiphoid ligaments Interchondral no ligaments Costochondral no ligaments Pelvis Syndesmoses of pelvic girdle Obturator membrane · Obturator canal Pubic symphysis superior pubic ligament · inferior pubic ligament Sacroiliac anterior sacroiliac ligament · posterior sacroiliac ligament · interosseous sacroiliac ligament ligaments connecting the sacrum and ischium: sacrotuberous ligament · sacrospinous ligament Greater sciatic foramen · Lesser sciatic foramen

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