- 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