Ulnar nerve instability in the cubital tunnel of asymptomatic volunteers

摘要

UNI dynamics of the cubital tunnel. Diagram and correlative US images demonstrating the normal (a, d), subluxation (b, e), dislocation (c, f) of ulnar nerve (yellow oval) adapted from Kawahara et al. [1]. The top images (a, d) show the elbow in extension, while the subsequent images (b, c, e, f) are in full flexion. ME medial epicondyle, MT medial triceps muscle, OP olecranon process, U ulnar nerve.