A case report of comminuted trapezium fracture with surgical treatment.

Comminuted trapezium fracture is very rare. As the trapezium is necessary for thumb movements, delayed diagnosis and treatment can result in thumb carpometacarpal (CM) joint osteoarthritis and restricted mobility. The K-wire or screw fixation is recommended for repairing displaced fractures. However, there is currently no established treatment protocol for this rare fracture. In trapezium fracture, a technique with K-wire fixation in addition to open reduction and internal fixation (ORIF) has been reported with favorable clinical outcomes. In this report, we present a case of comminuted trapezium fracture successfully treated with surgery. The present case involved a 26-year-old woman who was injured while driving her car, which led to a comminuted trapezium fracture. ORIF was conducted with headless screws and a locking plate, and the first and second metacarpals were temporarily fixed by K-wire with the thumb in traction. Six months after surgery, bony union and favorable clinical outcomes were achieved. This technique could be beneficial to prevent articular surface collapse in the comminuted trapezium fracture and to achieve favorable clinical outcomes.