Introduction-Patients with complete brachial plexus injuries have a high priority for surgical shoulder restoration. This is due to the fact that innervation of muscles below the elbow has a generally lower success rate, in addition to the critical role of functional control of the shoulder. The aim of present study is to neurotize suprascapular nerve by spinal accessory nerve through posterior approach in brachial plexus.Material and methods-The present prospective study was conducted at a tertiary care centre for a period of 3 years among 30 patients who visited to hospital for brachial plexus injuries. Complete history of patients was taken before and after operation. The statistical package for social science (SPSS), version 25.0, was used to analyze the data.Results-78% were male and 22% were females. 65% had injury on right side while 35% had injury on left side. Average value of shoulder flexion had increased significantly from 3.24±2.4 preoperative to 58.78±7.12 (P=0.001). Similarly, the average value of shoulder abduction had increased significantly from 5.47±3.78 preoperative to 66.32±6.8postoperative (P=0.001). Lastly, the average value of external rotation was enhanced significantly from 5.82±6.12 preoperative to 64.21±8.12 postoperative.Conclusion-Patients with brachial plexus palsy respond well to treatment when the spinal accessory nerve is transferred to the suprascapular nerve via the posterior route, thereby restoring shoulder abduction and external rotation.