Peripheral nerve autograft is the best method of repair a long nerve defection in clinic. But the donar nerve is limited and results in certain function obstacle. Besides,it is anther problem that nerve growing speed is 1mm/d after nerve injury.

• 临床上,周围神经长段缺损行自体神经移植是首选方法,但是自体神经来源有限,并给供区造成一定的功能障碍,况且,神经生长速度为1mm/d,也是需要迫切解决的问题。