| Greater sciatic foramen | |
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| Articulations of pelvis, anterior view, with greater sciatic foramen (labeled in red) and its boundaries. | |
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| Muscles of the gluteal and posterior femoral regions, piriformis labeled | |
| Latin | foramen ischiadicum majus |
| Gray's | subject #80 309 |
| Dorlands/Elsevier | sciatic foramen |
The greater sciatic foramen is a major foramen of the pelvis.
Contents |
Boundaries
It is bounded as follows:
- anterolaterally by the greater sciatic notch of the illium
- posteromedially by the sacrotuberous ligament
- inferiorly by the sacrospinous ligament and the ischial spine
- superiorly by the anterior sacroilliac ligament
Contents
It is partially filled up, in the recent state, by the Piriformis which leaves the pelvis through it.
The following structures make their exit from the pelvis through the greater sciatic foramen:
| Location | Name | Vessels | Nerves |
| Above the Piriformis | suprapiriform foramen[1] | superior gluteal vessels | superior gluteal nerve |
| Below the Piriformis | infrapiriform foramen[1] | inferior gluteal vessels internal pudendal vessels |
inferior gluteal nerve pudendal nerve sciatic nerve posterior femoral cutaneous nerve Nerve to obturator internus Nerve to quadratus femoris |
Additional images
 Right hip bone. External surface. |
 Left Levator ani from within. |
 The arteries of the gluteal and posterior femoral regions. |
 Nerves of the right lower extremity Posterior view. |
 Left gluteal region, showing surface markings for arteries and sciatic nerve. |
References
- ^ a b Yokochi, Chihiro; Rohen, Johannes W.. Color Atlas of Anatomy: A Photographic Study of the Human Body. Hagerstown, MD: Lippincott Williams & Wilkins. p. 482. ISBN 0-7817-9013-1.
External links
- SUNY Labs 41:os-0109
- Duke Orthopedics greater_sciatic_foramen
- glutealregion at The Anatomy Lesson by Wesley Norman (Georgetown University) (glutealart, glutealner)
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 As such, some of the information contained within it may be outdated.
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