The clinical diagnosis of peritriquetral injuries is difficult. We describe
our diagnostic technique based on specific questions and three clinical te
sts. The accuracy of our diagnostic technique was compared prospectively wi
th the definitive diagnosis made at arthroscopy. Preoperatively, 19 patient
s were diagnosed as having triquetrolunate dissociation. This was confirmed
at arthroscopy in 17. Another five patients not diagnosed preoperatively w
ere also diagnosed at arthroscopy as having mainly triquetrolunate dissocia
tion. The sensitivity of our diagnostic protocol was 0.77 and the positive
predictive value was 0.89.