L4.8.1.3.2.4: Sacrum

• PARTS OF THE SACRUM

  • Sacral canal
  • Body
  • Superior articular surface
  • Aia
  • Auricular surface
  • Posterior sacral crest
  • Median sacral crest
  • Sacral hiatus
• Sacral canal

  • continuation of the vertebral canal
• Ala

  • a wing-like structure that articulates with the hip bone
• Sacral hiatus

  • large terminal opening where the sacral canal terminates
• 1. ala
  2. sacral canal
  3. superior articular process
  4. auricular surface
  5. sacrum
  6. coccyx
  7. body
  8. median sacral crest
  9. posterior sacral foramina
  10. sacral hiatus

  A) 1-2

  B) 3-4

  C) 5

  D) 6

  E) 7

  F) 8-9

  G) 10