Cubital tunnel syndrome is characterized by compression of which nerve at which location?

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Cubital tunnel syndrome involves the ulnar nerve being compressed where it passes through the cubital tunnel at the elbow, behind the medial epicondyle. This location explains the typical symptoms: numbness and tingling in the little finger and the ulnar half of the ring finger, and possibly weakness of the intrinsic hand muscles when the elbow is bent or with prolonged elbow flexion.

Other options describe different nerve and location problems. Compression of the median nerve at the carpal tunnel causes median-nerve distribution symptoms in the hand (thumb through the middle finger) and is carpal tunnel syndrome. Compression of the radial nerve at the spiral groove leads to wrist drop and dorsal hand sensory changes. Compression of the ulnar nerve at the wrist (Guyon’s canal) affects the hand but not the elbow region.