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Bassett Collection of Stereoscopic Images of Human Anatomy

Exploration of gluteal region and hip

Contents of greater sciatic foramen

Image #180-5

KEYWORDS: Muscles and tendons.

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Exploration of gluteal region and hip
Contents of greater sciatic foramen
The tendon of the piriformis (9) has been divided near its insertion to allow the muscle (1) to be reflected upward. The sacrotuberous ligament (24) has also been divided and its upper part reflected medially. The sacral plexus is partially exposed.
  1. Piriform muscle
  2. Sacral plexus
  3. Superior gluteal artery and vein
  4. Right pointer: Inferior gluteal nerve Left pointer: Posterior femoral cutaneous nerve
  5. Superior gluteal nerve
  6. Gluteus minimus muscle
  7. Body of ischium (covered by periosteum)
  8. Sciatic nerve
  9. Piriform muscle (tendon of insertion, cut off)
  10. Greater trochanter (covered by tendon of Gluteus medius muscle)
  11. Obturator internus muscle (tendon of insertion)
  12. Upper pointer: Obturator externus muscle Lower pointer: Medial femoral circumflex artery
  13. Sacral bone
  14. Inferior gluteal artery
  15. Inferior cluneal nerve (medial)
  16. Internal pudendal vein (cut off)
  17. Lymph node
  18. Perforating cutaneous nerve
  19. Nerve to obturator internus
  20. Inferior rectal nerve
  21. Upper pointer: Sacrospinal ligament Lower pointer: Pudendal nerve (slightly elevated)
  22. Internal pudendal artery and vein
  23. Levator ani muscle
  24. Sacrotuberous ligament (divided and retracted)
  25. Deep transverse perineal muscle
  26. Ischial tuberosity
  27. Gemelli muscles
  28. Artery supplying sciatic nerve
  29. Quadratus femoris muscle