Irreducible Dislocation of the Thumb Interphalangeal Joint With Digital Nerve Interposition: Case Report

Irreducible open dislocation of the thumb interphalangeal joint is a rare injury with several factors responsible for blocking reduction. We describe a case of a 32-year-old man who, on surgical exploration, was found to have an irreducible thumb dislocation due to flexor pollicis longus tendon, ruptured volar plate, and the digital nerve interposed in the interphalangeal joint. (J Hand Surg 2010;35A:422-424. Copyright (C) 2010 by the American Society for Surgery of the Hand. All rights reserved.)