Structures

  • Sacrum
  • Base of sacrum
  • Sacral canal
  • Superior articular process
  • Superior articular facet
  • Sacral promontory
  • Auricular surface
  • Sacral tuberosity
  • Anterior border of ala
  • Median crest
  • Lateral crest
  • Intermediate crest
  • Sacral hiatus
  • 1st sacral body (body of S1)
  • S2
  • S3
  • Lateral mass
  • S4
  • Inferolateral angle
  • S5
  • Cornua of sacrum and coccyx
  • Apex of sacrum