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The ischial spine is part of the posterior border of the body of the ischium bone of the pelvis. It is a thin and pointed triangular eminence, more or less elongated in different subjects.
Structure
| Part | Attachment |
|---|---|
| external surface | gemellus superior muscle[1] |
| internal surface | coccygeus muscle,[2] levator ani muscle, pelvic fascia |
| pointed extremity | sacrospinous ligament |
The pudendal nerve travels close to the ischial spine.[3]
Clinical significance
The ischial spine can serve as a landmark in pudendal anesthesia, as the pudendal nerve lies close to the ischial spine.[3][4]
Additional images
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Right hip bone, external surface, showing the greater and lesser sciatic notches, separated by the ischial spine -
Articulations of pelvis. Anterior view. -
Pelvis. Anterior view.
References
This article incorporates text in the public domain from page 235 of the 20th edition of Gray's Anatomy (1918)
- ^ Chaitow, Leon; DeLany, Judith (2011-01-01), Chaitow, Leon; DeLany, Judith (eds.), "Chapter 12 - The hip", Clinical Application of Neuromuscular Techniques, Volume 2 (Second Edition), Oxford: Churchill Livingstone, pp. 391–445, doi:10.1016/b978-0-443-06815-7.00012-7, ISBN 978-0-443-06815-7, retrieved 2021-02-19
- ^ Bharucha, ADIL E.; Klingele, CHRISTOPHER J. (2005-01-01), Dyck, Peter J.; Thomas, P. K. (eds.), "Chapter 13 - Autonomic and Somatic Systems to the Anorectum and Pelvic Floor", Peripheral Neuropathy (Fourth Edition), Philadelphia: W.B. Saunders, pp. 279–298, doi:10.1016/b978-0-7216-9491-7.50016-8, ISBN 978-0-7216-9491-7, retrieved 2021-02-19
- ^ a b Christo, Paul J.; Hobelmann, Greg (2009-01-01), Smith, HOWARD S. (ed.), "Chapter 29 - PELVIC PAIN", Current Therapy in Pain, Philadelphia: W.B. Saunders, pp. 216–227, doi:10.1016/b978-1-4160-4836-7.00029-8, ISBN 978-1-4160-4836-7, retrieved 2021-02-19
- ^ "Clinical Case - Perineum & External Genitalia". Archived from the original on 2011-07-17. Retrieved 2009-05-27.
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