Objective To investigate the clinical effect of dual plate fixation on comminuted mid-shaft clavicle fractures. Methods A retrospective study was conducted on 27 patients with comminuted mid-shaft clavicle fractures fixed using open reduction and dual plate fixation from January 2013 to January 2017. There were 20 males and 7 females, aged （42.0±12.4） years; 16 patients had fractures on the right side, and 11 patients on the left side. All cases were close fractures. None suffered from neurovascular injury. The duration from injury to operation ranged from 2 to 8 d, averaged （4.0±1.4） d. Fracture healing, complications, healing time, and recovery time were observed and recorded. Shoulder function was evaluated by the use of the American Shoulder and Elbow Surgeon （ASES） score. Results The patients were followed up for 12 to 28 months, averaged （17.8±3.8） months. Anatomical fracture reduction and fracture union were observed in all patients with no incision infection, screw pulled out, plate shift or cut off, or other complications occurred. The fracture healing time was 10 to 22 weeks, averaged （17.0±2.9） weeks. The recovery time to pre-fracture function was 8 to 18 weeks, averaged （13.0±2.3） weeks. The ASES scores ranged from 88 to 98 points, averaged （93.0±3.4） points. Conclusion Dual plate fixation for comminuted mid-shaft clavicle fractures is a safe and effective procedure that allows fast bony union and shoulder function recovery.
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