Traumatic lesions of the brachial plexus are a broad-spectrum group of pathologies associated with several degrees of nerve injury and pathophysiological findings. Surgical management, when indicated, relies on several factors, such as time of evolution, age, severity, and extension of injury, among others. The surgical strategy is planned according to the available elements and functional priorities that are amenable to be reconstructed. Surgical techniques involve a combination of grafts and nerve transfers. Currently, recovery of shoulder function is possible and may be achieved by dual neurotization of both the suprascapular and axillary nerves. This chapter describes an additional, less common option to reconstruct the axillary nerve using the long thoracic nerve in lesions associated with brachial plexus trauma or isolated injuries.