Which muscles are affected in ulnar neuropathy?

Updated: Jun 08, 2018
  • Author: Charles F Guardia, III, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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Even for higher elbow lesions, there can be considerable selectivity regarding which muscles are affected because the ulnar nerve is organized into a number of separate fascicles. In certain cases, some fascicles are severely affected by whatever is pinching the nerve while other fascicles remain unaffected. If other C8/T1, lower-trunk, medial-cord muscles are affected, a C8/T1 radiculopathy or a brachial plexus lesion may be the cause.

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