Treatment of distal radius fractures with a nonbridging cross-pin fixator (the CPX system)

Many treatment methods exist for patients presenting with a fracture of the distal radius. With the evolution of innovative procedures and devices, treatment of these particular fractures is shifting to more contemporary approaches. The minimally invasive technique with the cross-pin fixator (CPX) system offers a new biomechanical concept for relatively rigid fixation of distal radius fractures (DRF). The CPX system uses percutaneous cross Kirschner wire fixation in combination with a nonbridging external fixator. The stability of the model is derived from the external unilateral frame and the positioning of multiple 1.6 mm Kirschner wires at various angles and planes to each other. This allows for maintenance of DRF reduction, early wrist mobilization, and a prompt return to the usual activities. Between September 2004 and September 2008, there were 54 patients with 56 DRF who were treated with the CPX system. Excluded from the report are 2 patients who had a bone graft and 1 patient who was not willing to adhere to the postoperative protocol. Of the 51 patients with 53 DRF, no major complications were reported. This article describes the CPX surgical technique, the indications, the complications, and the postoperative management.