Obliquus Capitis Inferior

Joe Muscolino

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Posterior and right-lateral views of the obliquus capitis inferior of the suboccipital group. The obliquus capitis superior has been ghosted into both views.

The Obliquus Capitis Inferior is a member of the Suboccipital Group, which is composed of the:

  • Rectus capitis posterior major
  • Rectus capitis posterior minor
  • Obliquus capitis superior
  • Obliquus capitis inferior



  • The obliquus capitis inferior attaches from the spinous process of the axis (C2) to the transverse process of the atlas (C1).



  • Ipsilaterally rotates the atlas at the atlanto-axial joint.

NOTE: The name obliquus capitis inferior is a misnomer given that this muscle does not attach onto the head (“capitis”).