Brachial plexus and nerves of the upper limb Prof. Abdulameer Al-Nuaimi E-mail: a.al-nuaimi@sheffield.ac.uk E. mail: abdulameerh@yahoo.com

Dermatomes

Brachial Plexus Behind the clav. Scal Ant Post triang U T M T L T Rhomboids & levat Scap M U T M T L T Serratus ant. M. Scal post Latiss Dorsi M. Brachial Plexus

Posterior triangle

The cords are named according To their arrangement around the Middle part of the axillary artery

Of the forearm

Cutaneous nerve of the forearm Innervation of Musculocutaneous nerve Cutaneous nerve of the forearm

Axillary Nerve It passes posteriorly round the surgical neck of the Humerus with the post. Circumflex humeral artery

Axillary nerve

Cubital Fossa

Cubital Fossa

The Radial nerve Arise from the posterior cord of the brachial plexus, it arise from nerve roots C5, C6, C7, C8, T1

Branches of radial nerve In the forearm it gives superficial sensory and deep motor branches. The deep branch winds around the neck of the radius between the superficial and deep layers of Supinator muscle to reach posterior of forearm. The superficial sensory branches are:

Dermatomes of the hand

Muscles of the forearm

Ulnar nerve Then It passes anteriorly in the forearm

Adductor pollicise muscle Ulnar nerve Adductor pollicise muscle the d

Median nerve It passes between the two heads of pronator teres m.

Innervation and the skin on the dorsal surface of Their distal phalanges

Carpal tunnel syndrome

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