clavicle fracture accounts for 2.6%.mid shaft clavicle fracture accounts for 80% followed by distal third fractures 20%.functional outcome of clavicle fracture is not only related to its union ,but also to its length. The aim of the study is prospective comparative analysis of functional outcome of operative (TENS) VS nonoperative treatment on mid shaft clavicle fractures in terms of union,complications and functional outcome. Study is conducted in the department of orthopaedics and traumatology,Madurai medical college and Government rajaji hospital on 30 patients with displaced /comminuted clavicle fracture. Both Anteroposterior and 10 to 20 cephalad tilted radiographs were made for each patient fracture union, non–union ,malunion, infection, functional parameters.using constant score and dash score objective and subjective shoulder function were measured. This study shows that early primary fixation of fractures of clavicle with TENS result in earlier return to function.Operative treatment reduces the non–union,malunion and neurological complication rates of clavicle fracture ,but does not affect the delayed union rate .For clinical application ,we should make decision in accordance with specific conditions.In order to avoid the risk of adverse events ,operative treatment is a better therapeutic method if it is matched to the individual patients.To conclude ,TENS nailing for clavicle middle third fracture provides an acceptable alternative method for the fixation of displaced distal clavicular fractures and delivers good results.