Greater sciatic foramen
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| Greater sciatic foramen | |
|---|---|
| Articulations of pelvis, anterior view, with greater sciatic foramen (labeled in red) and its boundaries. | |
| Muscles of the gluteal and posterior femoral regions, piriformis labeled | |
| Latin | foramen ischiadicum majus |
| Gray's | subject #80 309 |
| Dorlands/Elsevier | f_12/12373169 |
The greater sciatic foramen is a major foramen of the pelvis.
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][1] | superior gluteal vessels | superior gluteal nerve |
| Below the Piriformis | infrapiriform foramen[1][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
External links
- SUNY Labs 41:os-0109
- Duke Orthopedics greater_sciatic_foramen
- Norman/Georgetown glutealregion (glutealart, glutealner)
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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
Bones of pelvis/pelvic cavity | |
|---|---|
| General | sacrum, coccyx, hip bone |
| Ilium | Body (Arcuate line) Wing: gluteal lines (Posterior, Anterior, Inferior) - Fossa - iliac spines (Anterior superior, Anterior inferior, Posterior superior, Posterior inferior) - Crest - Tuberosity |
| Ischium | Body (Ischial spine, Lesser sciatic notch) - Superior ramus (Tuberosity of the ischium) - Inferior ramus |
| Pubis | Body - Superior ramus (Pubic tubercle, Pubic crest, Obturator crest) - Inferior ramus (Pectineal line) |
| Compound | Acetabulum (Acetabular notch) - Iliopubic eminence/Iliopectineal line - Linea terminalis - Ischiopubic ramus/Pubic arch
Obturator foramen - Greater sciatic foramen/Greater sciatic notch - Lesser sciatic foramen Lesser pelvis (Pelvic inlet, Pelvic brim, Pelvic outlet) - Greater pelvis |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
