Triquetral fracture with associated pisiform subluxation

Abstract

We herein present a case of right triquetral fracture with associated pisiform and flexor carpi ulnaris subluxation in a 29-year-old man. Initial radiography showed a right triquetral fracture. Computed tomography and magnetic resonance imaging demonstrated a triquetral fracture with a subluxated pisiform. Open reduction and lag screw fixation of the right triquetrum was performed, with good subsequent recovery of function. Although triquetral fracture with subluxation of the pisotriquetral joint is uncommon, attending clinicians should bear in mind the possibility of such an injury when managing traumatic ulnar-sided wrist pain.

Fig. 1

Anteroposterior radiograph of the right wrist shows a fracture of the triquetral body.

Fig. 2

CT image shows a fracture involving the pisotriquetral joint.

Fig. 3

(a–b) MR images of the right wrist show a fracture at the ulnar aspect of the pisotriquetral joint.

Fig. 4

Intraoperative photograph shows the wrist. C: capsule with triquetrum fragment; P: pisiform; T: triquetral fracture

Fig. 5

Postoperative radiograph taken at the three-month follow-up shows that the fracture has healed.