title: Snapping wrist due to an anomalous extensor indicis proprius: a case report.
abstract: Variation in the extensor muscles of the hand is common. These anatomic deviations are rarely symptomatic. We report a unique case of an anomalous extensor indicis proprius causing a painful snapping wrist. Intraoperative examination revealed a disproportionately large muscle belly under the extensor retinaculum causing subluxation of the ring and small extensor tendons creating a painful snapping phenomenon. Following excision, the subluxation and pain resolved.
authors.affiliation: University of Illinois at Chicago, 835 S. Wolcott, Suite 209, Chicago, IL 606012, USA. jbakermd@gmail.com
authors.forename: James
authors.initials: J
authors.lastname: Baker
authors.forename: Mark H
authors.initials: MH
authors.lastname: Gonzalez
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