Ballottement test (shuck test): Lunotriquetral instability



- Discussion:
   - triquetrum is displaced dorsally and palmarly on the lunate, demonstrating increase excursion over the normal side and often a painful crepitus;
   - compression test: displacement of the triquetrum ulnarly during radioulnar deviation, which is also painful;
Shear test:
     - for triquetrolunate strain;
     - shear force applied at this joint while stabilizing lunate dorsally and pisotriquetral plane volarly



Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Wednesday, December 12, 2012 3:21 pm