Simultaneous, bilateral fracture of the triquetral bone

Fracture of the triquetrum is the second most common carpal bone fracture, accounting for up to 3.5% of all wrist injuries. 1 These fractures are frequently associated with other carpal injuries. Two theories are generally accepted: first, ulnocarpal impaction resulting in a fracture, and second, ligament avulsion-type fracture. 2 Ligaments inserted at the dorsum of the triquetrum consist of intrinsic (dorsal intercarpal) and extrinsic (dorsal ulnotriquetral and dorsal radiocarpal) ligaments. 3 Recently, an association was found between dorsal fractures of the triquetrum and dorsal carpal ligament injury, using MRI. 1 Treatment of dorsal triquetral chip fractures consists of pain relief by short-arm cast immobilisation for 3-6 weeks.