From this two points we know that the key reason of bad prognosis after nerve root injury is in the relevant spinal cord segment, so the fundamentality of treat should be in the relevant spinal cord segment .

• 通过以上两点可以看出，神经根损伤后疗效不佳的关键在相应的脊髓部，故其治疗的根本亦应在相应的脊髓部。