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afya UlnarNerve

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20160425222412 Ben  
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arises from medial cord of brachial plexus (''C8, T1'')

''Motor'' to ....
medial two lumbricals
aDductor pollicis
interossei
hypothenar muscles: abductor digiti minimi, flexor digiti minimi
flexor carpi ulnaris

''Sensory'' to ....
medial 1 1/2 fingers (palmar and dorsal aspects)

''Patterns of damage''
''..... at wrist''
'claw hand' - hyperextension of the metacarpophalangeal joints and flexion at the distal and proximal interphalangeal joints of the 4th and 5th digits
wasting and paralysis of intrinsic hand muscles (except lateral two lumbricals)
wasting and paralysis of hypothenar muscles
sensory loss to the medial 1 1/2 fingers (palmar and dorsal aspects)

''....... at elbow''
as above (however, ulnar paradox - clawing is more severe in distal lesions)
radial deviation of wrist