To evaluate the usefulness of wrist arthroscopic examination in patient with persistent pain after the triquetral dorsal chip fracture and also to determine its relationship with TFCC injury in the triquetral dorsal chip fracture patient manifesting persistent pain.

This study is based on six cases presenting persistent pain in the ulnar aspect after the triqeutral posterior cord fracture that were treated conservatively. Wrist arthroscopy was carried out for all six cases. All were preoperatively and postoperatively evaluated using VAS pain scale, grip power, ulnar grind test, Kleinman shearing test and lunotriquetral ballottment test.

Preoperatively, ulnar grind test yielded positive results in all six cases, Kleiman shearing test proved positive in three cases and lunotriquetral ballottment test yielded positive result in one case. In the arthroscopic findings, synovitis and TFCC injury were detected in all cases, and based on Palmer classification of TFCC injury, type IA was determined in five cases and type ID in one case. Arthroscopic TFCC partial resection and synovectomy were carried out. VAS pain scale improved from an average 8 points preoperatively to 3 points postoperatively. The difference of grip power between the normal and the other side improved from average of 15 lb preoperatively to 5 lb postoperatively. Based on postoperatively physical examination at 6 weeks, all cases yielded negative results in the ulnar grind test and Kleiman shearing test.

We think that TFCC injury is one of the causes of persistent pain after triquetral dorsal chip fracture. We recommend an arthroscopic TFCC partial resection as a valuable treatment option.