Suboccipital Triangle Anatomy
Epicranial aponeurosis, Occipital belly of occipitofrontalis muscle, Greater occipital nerve (medial branch
of posterior ramus of C2 spinal nerve),
Occipital artery, Posterior auricular artery, Great auricular nerve (cervical
plexus C2, 3), Lesser occipital nerve (cervical plexus C2, 3), Sternocleidomastoid
muscle, Trapezius
muscle, Splenius
capitis muscle (cut), Semispinalis capitis muscle (cut), Semispinalis cervicis
muscle, Splenius
cervicis muscle C2 vertebra, Longissimus capitis muscle, Splenius capitis muscle (cut and reflected),
Greater occipital nerve
(posterior ramus of C2 spinal nerve), Obliquus capitis inferior muscle, Descending branch of occipital
artery, Posterior
arch of atlas (C1 vertebra), Suboccipital nerve (posterior ramus of C1 spinal nerve), Obliquus capitis superior muscle, Vertebral artery (horizontal
segment), Semispinalis
capitis muscle (cut and reflected), Rectus capitis posterior major muscle, Rectus capitis posterior
minor muscle, Semispinalis capitis and splenius capitis muscles in posterior triangle of
neck, Posterior
cutaneous branches of posterior rami of C4, 5, 6 spinal nerves, 3rd occipital nerve (posterior ramus of C3 spinal nerve), 3rd occipital nerve (medial branch
of posterior ramus of C3 spinal nerve).
