Hi, thinning of hand usually means some nerve compression either in the neck or anywhere along the course of the nerve. A good clinical evacuation would be helpful. NCV and EMG treating of both upper limbs including the nerves from the brachial plexus well be helpful. He may need MR neurography if the lesion is in the brachial plexus. Consult an orthopaedic or neurosurgeon for the same.
Answered2016-05-15 06:42:43
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