Abstract:[Objective] To introduce the surgical techniques and preliminary clinical results of staged external fixation and percutane-ous plate fixation for open double shaft fractures of the forearm. [Methods] A total of 12 patients were treated with staged external fixationand percutaneous plate internal fixation for open forearm double shaft fractures. In the first stage an external fixator was applied to maintainfixation and forearm alignment, while in the second stage, two minimally invasive percutaneous "windows" were made on each end of the ul-nar fracture and the radial fracture along the long axis of bone, separating the muscle and tendon to the periosteum. The periosteum stripperwas used to separate extra-periosteum to make a "tunnel" and the plates were inserted from the distal "window" to the proximal "window"respectively. After further reduction under fluoroscopy, drilling and screw placement were carried out. Early postoperative rehabilitation offorearm rotation function was performed. [Results] All the 12 patients had two stages of surgical procedures performed successfully withoutserious complications with an average interval between the first and second stages of (21.1±6.1) days. All patients were followed up for 12 to26 months. The radius got healing in (4.3±1.1) months, while the ulna was of (4.0±1.4) months on a mean. According to the Grace-Evers-mann criteria, the clinical outcomes at the latest follow-up were marked as excellent in 9 cases, good in 2 cases, and fair in 1 case, with ex-cellent and good rate of 91.7%. [Conclusion] Using the initial external fixator to assist indirect reduction, the percutaneous plate fixation issafe and reliable, and does achieve satisfactory clinical efficacy for double shaft fractures of the forearm.