Ulnar-sided perilunate instability: An anatomic and biomechanic study

Steven F. Viegas, Rita M. Patterson, Pamela D. Peterson, David J. Pogue, David K. Jenkins, Timothy D. Sweo, James A. Hokanson

Research output: Contribution to journalArticlepeer-review

137 Scopus citations

Abstract

A staging system for ulnar-sided perilunate instability is presented based on a series of cadaver dissections and load studies. Stage I: partial or complete disruption of the lunotriquetral interosseous ligament, without clinical and/or radiographic evidence of dynamic or static volar intercalated segment instability deformity; stage II: complete disruption of the lunotriquetral interosseous ligament and disruption of the palmar lunotriquetral ligament, with clinical and/or radiographic evidence of dynamic volar intercalated segment instability deformity; and stage III: complete disruption of the lunotriquetral interosseous and the palmar lunotriquetral ligaments, attenuation or disruption of the dorsal radiocarpal ligament, with clinical and/or radiographic evidence of static volar intercalated segment instability deformity.

Original languageEnglish
Pages (from-to)268-278
Number of pages11
JournalJournal of Hand Surgery
Volume15
Issue number2
DOIs
StatePublished - Mar 1990

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