A kinematic study of luno-triquetral dissociations

E. Horii, M. Garcia-Elias, K. N. An, A. T. Bishop, W. P. Cooney, R. L. Linscheid, E. Y.S. Chao

Research output: Contribution to journalArticlepeer-review

118 Scopus citations


An analysis of carpal motion after sectioning the ligamentous support of the luno-triquetral joints was done by use of stereoradiographic methods. The ligaments were sectioned in two stages. In stage I, a complete sectioning of both the dorsal and palmar luno-triquetral ligaments and the interosseous membrane was done. Stage II consisted of further sectioning of both the dorsal radio-triquetral and dorsal scapho-triquetral ligaments. After both stage I and stage II ligment sectioning, all of the intercarpal joints exhibited altered kinematics. The changes were especially marked at the luno-triquetral joint where motion was increased in all planes of wrist motion. The essential lesion in producing a static palmar flexed intercalated segment instability was division of the dorsal radio-triquetral and dorsal scapho-triquetral ligaments in association with the luno-triquetral ligaments and interosseous membrane sectioning.

Original languageEnglish (US)
Pages (from-to)355-362
Number of pages8
JournalJournal of Hand Surgery
Issue number2
StatePublished - 1991

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine


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