Morrow BT, Harvey I, Ho ES, et al. - This study was undertaken to investigate the long-term hand function outcomes in a cohort of patients with a complete brachial plexus birth injury (BPBI) who had no nerve root in continuity prior to primary nerve reconstruction targeting the lower trunk. Researchers designed a single-center retrospective case series of complete BPBI including patients who had undergone primary nerve reconstruction. They evaluated outcomes using the active movement scale and brachial plexus outcome measure preoperatively and at the age of 4 and 8 years. The study enrolled a total of 50 patients with a complete BPBI, of whom 82% (41/50) had an avulsion of C8-T1, had undergone primary nerve reconstruction at a mean age of 4.1 months. The results showed that functional hand outcome was restored to sufficiently perform bimanual activity tasks in 81% (21/26) of patients with a complete BPBI at 8 years of age. The outcomes revealed that primary nerve reconstruction reinnervating the lower trunk can result in a functional extremity.