Peripheral nerve proxima///+ distal transected nerve heals spontaneously by contraction healing and neuroma (neural scar) formation The endoneurial stroma is a nonregenerative tissue Following transection, it forms neural scar(neuroma) Irreversible injury Contraction occursPeripheral nerve The endoneurial stroma is a nonregenerative tissue.Following transection, it forms neural scar (neuroma). Irreversible injury. Contraction occurs. transected nerve heals spontaneously by contraction and neuroma (neural scar) formation