Abstract:Introduction: Fractures of the clavicle are common injuries with an incidence of 5-10% of all fractures [1]. These fractures are generally managed conservatively. Titanium elastic nails are a promising minimally invasive treatment for displaced mid-clavicular fractures, which may be an alternative to plate fixation or even nonoperative treatment. The aim of the present study was to evaluate the functional and radiological results of intramedullary fixation of mid-clavicular fractures. Methods: Between January 2007 and June 2013, 48 patients with type A and type B middle third clavicle fractures (OTA Classification) underwent flexible intramedullary nailing with titanium elastic nail. Implant removal was performed in all the patients after the fracture united completely. Results: The mean constant shoulder score for 47 patients at 6 weeks was 56.98 (range: 44-72), at 3 months was 91.25 (range: 54-98), at 6 months was 96.38 (range:64-100), at 12 months was 98.75 (range:68-100), at 18 months was 99.50 (range:78-100), and at the end of 24 months it was 99.58 (range:80-100). Conclusion: Flexible intramedullary nailing, a minimally invasive technique for stabilization of displaced midshaft clavicle fractures is a simple procedure with excellent functional outcome in terms of quick return to sporting activities and a high patient satisfaction rate.