Definitions:

1. A major nerve in the arm that runs from the neck down to the hand. NOUN
   • Compression of the ulnar nerve can lead to numbness in the ring and little fingers.
2. Major nerve that controls movement and sensation in the forearm and hand, and responsible for both motor and sensory functions including fine motor skills. NOUN
   • Overuse and repetitive motions can contribute to ulnar nerve entrapment.

Synonyms:

• cubital nerve
• nervus ulnaris