Sacrum Lecture – Anatomy Lectures – MBBS Lectures

• Formed by fusion of 5 sacral vertebrae
• It is triangular
• Apex directed inferiorly articulating with coccyx
• Base is present superiorly articulating with L5 making the Sacro vertebral angle

• It has a
  • Base
  • Apex
  • Pelvic surface
  • Dorsal surface
  • Lateral surface

Base and Apex

Pelvic Surface

Dorsal Surface

Lateral Surface

Attachments and relations

Sacroiliac joint and related ligaments

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