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Anatomy/Body Parts
Updated March 2026

Ulnar Nerve

Definition

A peripheral nerve that runs along the inner aspect of the arm and forearm, passing through the cubital tunnel at the elbow. Ulnar nerve entrapment from repetitive elbow flexion or direct pressure is a common workers' compensation condition, causing numbness in the ring and small fingers and hand weakness.

Related Terms

Frequently Asked Questions

What is a Ulnar Nerve?

A peripheral nerve that runs along the inner aspect of the arm and forearm, passing through the cubital tunnel at the elbow. Ulnar nerve entrapment from repetitive elbow flexion or direct pressure is a common workers' compensation condition, causing numbness in the ring and small fingers and hand weakness.

How is ulnar nerve evaluated in a workers' compensation exam?

Ulnar Nerve is assessed during the physical examination portion of a QME or AME evaluation. The examining physician documents range of motion, functional limitations, and any objective findings related to ulnar nerve to support their impairment rating.