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Flexor digitorum superficialis - Median nerve (C8, T1) Flexor digitorum profundus - Median and Ulnar nerves (C8, T1) Flexor pollicis longus - Median nerve (C7, C8) Pronator quadratus - Median nerve (C7, C8) Extensor carpi radialis brevis - Deep branch of the radial nerve (C7, C8) Extensor digitorum - Posterior interosseous nerve (C7, C8)
These nerves originate in the fifth, sixth, seventh and eighth cervical (C5–C8), and first thoracic (T1) spinal nerves, and innervate the muscles and skin of the chest, shoulder, arm and hand. [1] [2] [3] Brachial plexus injuries can occur as a result of shoulder trauma (e.g. dislocation [4]), tumours, or inflammation, or obstetric.
Its nerve roots come from C8 and T1. It accompanies the anterior interosseous artery along the anterior of the interosseous membrane of the forearm , in the interval between the flexor pollicis longus and flexor digitorum profundus , supplying the whole of the former and (most commonly) the radial half of the latter, and ending below in the ...
The brachial plexus is a network of nerves (nerve plexus) formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1).This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit, it supplies afferent and efferent nerve fibers to the chest, shoulder, arm, forearm, and hand.
The right arm and hand are more likely to be affected than the left. Symptoms include atrophy of the arm or hand, claw hand, constant crying (due to pain), [10] intrinsic minus hand deformity, [11] paralysis of intrinsic hand muscles, and C8/T1 Dermatome distribution numbness. Involvement of T1 may result in Horner's syndrome, with ptosis, and ...
The medial pectoral nerve usually arises from the medial cord of the brachial plexus; it can however occasionally arise directly from the anterior division of the inferior trunk of the brachial plexus. [1] [2] It is derived from the eighth cervical (C8) and first thoracic (T1) spinal nerve roots. [1] The origin is situated posterior to the ...
The medial cutaneous nerve of the forearm (also known as the medial antebrachial cutaneous nerve) is a sensory branch of the medial cord of the brachial plexus derived from the ventral rami of spinal nerves C8-T1. It provides sensory innervation to the skin of the medial forearm and skin overlying the olecranon.
The median nerve receives fibers from roots C6, C7, C8, T1 and sometimes C5. It is formed in the axilla by a branch from the medial and lateral chords of the brachial plexus, which are on either side of the axillary artery and fuse together to create the nerve anterior to the artery. [citation needed]