Anterior Interosseous Nerve Syndrome

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Anterior Interosseous Nerve Syndrome
Pathophysiology Entrapment of the anterior interosseous nerve at various locations at the elbow or proximal forearm.
Clinical Features Pure motor palsy affecting pollicis longus, flexor digitorum profundus, pronator quadratus.

Clinical Features

Pure motor palsy. There is difficulty making an "OK" sign with thumb and forefinger opposition.

Literature Review