Erector Spinae

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Other Names

  • Lower Back

Heads

  1. Iliocastalis
    • Lumborum
    • Thoracis
    • Cervicis
  2. Longissimus
    • Thoracis
    • Cervicis
    • Capitis
  3. Spinalis
    • Thoracis
    • Cervicis
    • Capitis

Movement

Spine (Lumbar, Thoracic)

Spine (Cervical)

Neck (Atlantooccipital & Atlantoaxial)

  • Extension
    • Both Sides [2, 3 ]
  • Rotation
    • Rotation right [Right 2, 3 ]
    • Rotation left [Left 2, 3 ]
  • Lateral Flexion
    • Lateral flexion right [Right 2, 3 ]
    • Lateral flexion left [Left 2, 3 ]

Attachments

Origin

  • Sacrum
    • Lower Posterior Surface [1 ]
    • Transverse Processes [2 ]
  • Ribs (Posterior) [1 ]
  • Lumbar Vertebrae
    • Transverse Processes [2 ]
  • Thoracic Vertebrae
    • Transverse Processes [2, 3 ]
  • Cervical Vertebrae
    • Transverse Processes [3 ]
  • Ligamentum Nuchae (Posterior Neck Ligaments) [3 ]

Insertion

  • Ribs (Posterior) [1 ]
  • Cervical Vertebrae
    • Transverse Processes [1, 2 ]
    • Spinous Processes [3 ]
  • Thoracic Vertebrae
    • Transverse Processes [2 ]
    • Spinous Processes [3 ]
  • Skull
    • Mastoid Process [2 ]
    • Occipital Bone [3 ]

Related Muscles

Comments

See erector spinatus weakness.

 Erector Spinae

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