Posterior triangle of neck


The posterior triangle of the neck lies behind the sternocleidomastoid as it runs into the its attachment to the superior nuchal line of the occipital bone.



Anterior border is made up of the posterior border of sternocleidomastoid


Posterior border is formed by the anterior wall of trapezius


Base: Inferior boundary is formed by the clavicle at its superior aspect


Roof is formed by deep investing fascia of neck running from trapezius. It is pierced by cutaneous nerves and vessels which include greater occipital nerve, lesser occipital nerve, greater auricular nerve and transverse nerve of neck


It contains parts of brachial plexus  and also lower 1/3 of external jugular vein as it crosses sternocleidomastoid.


Occipital triangle


Omoclavicular (subclavian) triangle



Elementary dissector Advanced dissector


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Creator: Oluwole Ogunranti

Posterior triangle of neck - muscles - 3D models


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Organ integration
Clinical anatomy

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Intervertebral arches joints

Atlanto-occipital joint

Median atlanto-axial

Lateral atlanto-axial joint

Injuries to neck
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