Teachable Moment: Examination of the Anterior Interosseous Nerve-LH Exam of AIN Final

Video Transcription

Video Summary

In this video, Dr. Wang discusses the examination of the anterior interosseous nerve (AIN). The AIN is a branch of the median nerve in the forearm and is primarily a motor nerve. It is important to evaluate the AIN when distinguishing between median neuropathy at the wrist and a more proximal median neuropathy. Dr. Wang explains the anatomy and innervation of the AIN, as well as how to test the strength of the muscles it innervates, including the flexor pollicis longus, pronator quadratus, and flexor digitorum profundus. The video also highlights common pitfall in testing and evaluates the OK sign as an indicator of AIN neuropathy.

Keywords

examination

anterior interosseous nerve

AIN

median neuropathy

motor nerve