Greater sciatic foramen
The greater ischial foramen ("large ischial hole") is an opening in the body wall in the area of the buttocks region . This hole is bounded laterally and ventrally by the large ischial bone ( Incisura ischiadica major , → ischium ). This section of bone is bounded towards the center and back (posteriomedial) by the sacrotuberous ligament , below (caudal) by the sacrospinal ligament and above by the anterior sacroiliac ligament . In humans, the greater sciatic foramen is divided into two compartments by the piriformis muscle . Above this muscle lies the suprapiriforme foramen , below the infrapiriforme foramen .
Step through the suprapiriform foramen:
Passing through the infrapiriform foramen:
- Sciatic nerve
- Vena and inferior gluteal artery
- Inferior gluteus nerve
- Posterior femoral cutaneous nerve
- Pudendal nerve
- Rami musculares of the sacral plexus
- Internal pudendal vein and artery .
literature
Mark Buchta et al .: Das Physikum: Gk 1-repetitorium . Elsevier, Urban & FischerVerlag 2003, ISBN 978-3-437-43050-3 , p. 143.