Mishal Shan6 months ago

Posterior Triangle of the Neck

Triangles of the neck are important surgical landmarks in head and neck surgery. The posterior triangle is bound anteriorly by the sternocleidomastoid and posteriorly by trapezius. The inferior boundary is formed by the middle third of the clavicle. The bed of the triangle is formed by the scalene muscles below and splenius capitis superiorly. Important structures passing through the triangle are the accessory nerve (CN XI) and the proximal portions of the brachial plexus. These need to be safeguarded during procedures of the posterior triangle. Image via: Netter's Atlas of Human Anatomy