Head & Neck Anatomy

  The   posterior triangle   of the neck is an anatomical area located in the lateral aspect of the neck. We shall look at the anatomy of the posterior triangle of the neck – its borders, contents, subdivisions, and any clinical relevance. ..................................................................................................................................... Borders Its boundaries are as follows: *Anterior  – posterior border of the sternocleidomastoid. *Posterior  – anterior border of the trapezius muscle. *Inferior  – middle 1/3 of the clavicle. The posterior triangle of the neck is covered by the  investing  layer of fascia, and the floor is formed by the  prevertebral  fascia. ..................................................................................................................................... Contents Muscles The posterior triangle of the neck contains many muscles, which make up the borders and the floor...