Supraclavicular nerves
types of nerves
The supraclavicular nerve is a cutaneous (sensory) nerve of the cervical plexus that arises from the third and fourth cervical (spinal) nerves. It emerges from beneath the posterior border of the sternocleidomastoid muscle, then split into multiple branches. Together, these innervate the skin over the shoulder.
The supraclavicular nerve can be blocked during shoulder surgery.
Anatomy
Origin
The supraclavicular nerve is a branch of the cervical plexus that arises from cervical (spinal) nerves C3-C4 with the predominant contribution from C4.
Course
It emerges at the posterior border of the sternocleidomastoid muscle alongside the other three cutaneous branches of the cervical plexus, then promptly divides into several branches. The nerves descend in the posterior triangle of the neck beneath the platysma muscle and the deep cervical fascia. Near the clavicle, the supraclavicular nerves perforate the fascia and the platysma muscle to become cutaneous. They are arranged, according to their position, into three groups—anterior, middle, and posterior.
Medial supraclavicular nerves
The medial supraclavicular nerves or anterior supraclavicular nerves (nn.
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