Suboccipital Triangle.txt

• Superiomedially – Rectus capitis posterior major

• Superiolaterally – Superior oblique

• Inferiolaterally – Inferior oblique

• Floor – Posterior atlanto-occipital membrane and posterior arch of C1

• Roof – Semispinalis capitis

• Vertebral A.
• Suboccipital N. (C1)

Spinous process of Axis (C2)

Inferior nuchal line (lateral to RCP Minor)

Bilatterally: Extends the head

Unilaterally: Rotation of head ipsilaterally

Posterior tubercle of Atlas (C1)

Inferior nuchal line (adjacent to midline)

Extension of Head (bilaterally)

Spinous process of Axis (C2)

Transverse process of Atlas (C1)

Rotation of head ipsilaterally

Transverse process of Atlas (C1)

Occipital bone (between superior and inferior nuchal lines)

Suboccipital N. (posterior rami C1)

Vertebral A. (muscular branches)

Bilaterally: Extension of head

Unilaterally: Lateral flexion ipsilaterally