Suprascapular nerve

Suprascapular Nerve

Nerve Less

Suprascapular nerve

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The suprascapular nerve arises from the upper trunk (formed by the union of the fifth and sixth cervical nerves). It innervates the supraspinatus muscles and infraspinatus muscles.

It runs lateralward beneath the Trapezius and the Omohyoideus, and enters the supraspinatous fossa through the suprascapular notch, below the superior transverse scapular ligament; it then passes beneath the Supraspinatus, and curves around the lateral border of the spine of the scapula to the infraspinatous fossa.

In the supraspinatous fossa it gives off two branches to the Supraspinatus muscle, and an articular filament to the shoulder-joint; and in the infraspinatous fossa it gives off two branches to the Infraspinatous muscle, besides some filaments to the shoulder-joint and scapula.


Additional images

Image:Gray810.png|Suprascapular and axillary nerves of right side, seen from behind.
Image:Brachial plexus.svg|Brachial plexus
Image:Brachial_plexus_color.svg|Brachial plexus with courses of spinal nerves shown

External links

  • - "The major subdivisions and terminal nerves of the brachial plexus."

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