Posterior Perspective of the Greater Occipital Nerve

Description

Arising from the dorsal ramus of C2, the greater occipital nerve (nervus occipitalis major) courses superiorly from the upper cervical region toward the posterior scalp, passing deep to the semispinalis capitis and then becoming subcutaneous just inferior to the superior nuchal line. From that emergence point it fans laterally and superiorly over the occiput, with terminal branches crossing the midline to overlap contralateral innervation near the external occipital protuberance. Bony landmarks visible from this posterior perspective include the occipital bone with its sutures, the mastoid regions lateral to the midline, and the posterior elements of the cervical vertebrae inferiorly. Posterior mapping of this nerve matters because its superficial course makes it a frequent pain generator in occipital neuralgia and cervicogenic headache, where tenderness often localizes near the nerve’s exit through the trapezius and semispinalis capitis fascia. Palpation, ultrasound-guided nerve block, and radiofrequency procedures target the nerve near the superior nuchal line, using the external occipital protuberance and mastoid tip as practical surface references. A small structure. Big symptoms. Common use cases include anatomy and neuroanatomy teaching on the cervical plexus and dorsal rami, pain medicine texts illustrating greater occipital nerve block technique, and neurosurgical or sports medicine materials discussing headache patterns after whiplash or upper cervical facet pathology. Anatomical accuracy verified by SciePro's Medical Advisory Board.