1. This document discusses principles of peripheral nerve repair, including making an accurate diagnosis, determining the injury mechanism, timing of repair, adequate debridement of nerve stumps, use of microsurgery, and postoperative management. 2. Specific techniques are presented, such as cable grafts to bridge nerve gaps and nerve transfers to restore shoulder function. Complications from various injuries like gunshot wounds and traumatic false aneurysms compressing nerves are also reviewed. 3. Hereditary conditions like Hereditary Neuropathy with Liability to Pressure Palsies that increase susceptibility to nerve injuries are mentioned.