Background: Intramedullary elastic rod fixation of midshaft clavicular fracture results in rapid free movement of the shoulder and an earlier return to daily activities than the conservative treatment. In comparison with plate fixation, the procedure is less invasive, with no loss of fracture haematoma, rapid union, and less infection. No major surgery for removal with less injury to surrounded neurovascular structures. A smaller incision is required with superior cosmesis.  Objective: To study the short-term results of treatment of displaced fractures of the middle third of the clavicle using percutaneous elastic intramedullary nails Patient and Methods: This prospective study was carried out on twenty patients with displaced fractures of the middle third of the clavicle presented to the Hospital and treated by percutaneous elastic intramedullary rod between November 2019 and May 2020. Results: At the end of the follow-up period, the mean score was 89.70 ± 13.55 ranging from 48 to 100 according to the modified Constant and Murley shoulder score. Fourteen patients (70%) had excellent results, four patients (20%) had good results, one patient (5%) had a fair result, and one patient (5%) had a poor result. Conclusion: Elastic stable intramedullary nailing (ESIN) is an image dependant procedure indicated best for young medically free patients with acute simple 2 part middle third clavicle fracture. Delay in surgery may necessitate open reduction. Hammering is not recommended to avoid dorsolateral cortex perforation.