What causes lunotriquetral ligament tears?

Updated: Apr 26, 2021
  • Author: David M Lichtman, MD; Chief Editor: Harris Gellman, MD  more...
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Lunotriquetral ligament tears may occur as a result of hyperextension and radial deviation of the wrist or as part of ulnar impaction syndrome. [17, 24, 57] Isolated lunotriquetral tears must be differentiated from ulnar impaction syndrome; the treatment for ulnar impaction syndrome focuses on ulnar shortening. Studies have shown that isolated tears of the lunotriquetral interosseous ligament do not result in volar intercalated segment instability. However, a volar flexed intercalated segment instability (VISI) deformity occurs when the interosseous ligament and the dorsal radiolunotriquetral ligament are disrupted.

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