Thegreater sciatic foramenis an opening (foramen) in the posteriorhuman pelvis.It is formed by thesacrotuberousandsacrospinous ligaments.Thepiriformis musclepasses through the foramen and occupies most of its volume. The greater sciatic foramen is wider in women than in men.
| Greater sciatic foramen | |
|---|---|
 Thepelvisshowing the greater sciatic foramen in red | |
| Details | |
| Identifiers | |
| Latin | foramen ischiadicum majus |
| TA98 | A03.6.03.008 |
| TA2 | 1316 |
| FMA | 17031 |
| Anatomical terminology | |
Structure
editIt is bounded as follows:
- anterolaterally by thegreater sciatic notchof theilium.[1]
- posteromedially by thesacrotuberous ligament.[1]
- inferiorly by thesacrospinous ligamentand the ischial spine.[1]
- superiorly by the anterior sacroiliac ligament.
Function
editThepiriformis,which exits the pelvis through the foramen, occupies most of its volume.
The following structures also exit the pelvis through the greater sciatic foramen:[2]
| Location | Name | Vessels | Nerves |
|---|---|---|---|
| Above the Piriformis | suprapiriform foramen[3] | superior gluteal vessels | superior gluteal nerve |
| Below the Piriformis | infrapiriform foramen[3] | 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 |
See also
edit
Wikimedia Commons has media related toGreater sciatic foramen.
References
edit
This article incorporates text in thepublic domainfrompage 309of the 20th edition ofGray's Anatomy(1918)
- ^abcChaitow, Leon; DeLany, Judith (January 1, 2011), Chaitow, Leon; DeLany, Judith (eds.),"Chapter 11 - The pelvis",Clinical Application of Neuromuscular Techniques, Volume 2 (Second Edition),Oxford: Churchill Livingstone, pp. 299–389,doi:10.1016/b978-0-443-06815-7.00011-5,ISBN978-0-443-06815-7,retrievedFebruary 6,2021
- ^"Greater Sciatic Foramen - Wheeless' Textbook of Orthopaedics".wheelessonline.com.RetrievedDecember 27,2016.
- ^abYokochi, Chihiro;Rohen, Johannes W.(2006).Color Atlas of Anatomy: A Photographic Study of the Human Body.Hagerstown, MD: Lippincott Williams & Wilkins. p. 482.ISBN978-0-7817-9013-0.
External links
edit- Greater sciatic foramenat theDuke University Health System's Orthopedics program
- glutealregionat The Anatomy Lesson by Wesley Norman (Georgetown University) (glutealart,glutealner)
