Case | Point of severing | Initial trauma | Transplantation materials | Coaptation | Laying aside | Surgical plan | Principles of selection |
---|---|---|---|---|---|---|---|
Case 1 | Upper arm | RN, MN, UN avulsed near brachial plexus, and RN cannot undergo self–repair | UN | MN, RN | UN | M–(M + R) | l horse–tail–like avulsion of RN, or RN avulsed at very proximal level l Balance between extensor and flexor l Sacrifice UN |
Case 2 | Elbow | RN, MN avulsed below the middle of the upper arm, UN avulsed more proximal | UN | MN, UN | – | M–(M + U) | l Select the thicker proximal nerve l Select the relatively intact proximal nerves l Repair all the distal nerves |
Case 3 | Upper arm | UN | MN, UN | – | M–(M + U) | ||
Case 4 | Upper arm | RN, UN avulsed below the middle of the upper arm, MN avulsed more proximal | MN | UN, MN | – | U–(U + M) | |
Case 5 | Upper arm | MN | UN, MN | – | U–(U + M) |