◔
Dorsal Scapular Nerve
From WikiMSK
This article is a stub.
| |
| Dorsal Scapular Nerve | |
|---|---|
| Nerve Type | Motor nerve |
| Origin | branch of anterior ramus of fifth cervical nerve (C5 root of the brachial plexus) |
| Course | Pierces scalenus medius, joins and runs with dorsal scapular artery, then runs down the medial scapular border deep to the levator scapulae and rhomboid muscles and superficial to the serratus anterior. |
| Major Branches | No named branches |
| Motor innervation | Levator Scapulae, Rhomboid Minor, Rhomboid Major muscles |
Origin and Course
The dorsal scapula nerve is mostly derived from the C5 nerve root, being a proximal branch of this nerve. It pierces the middle scalene muscle and courses inferiorly and posteriorly between teh scalenus posterior muscle, serratus posterior superior, and levator scapulae muscles. It travels with the dorsal scapula artery long the medial border of the scapula.
Motor Distribution
It innervates Rhomboid Major, Rhomboid Minor, and Levator Scapulae in some research.
Sensory Distrubtion
It can innervate the medial periscapular region, with entrapment being a controversial cause for pain.
