Conclusion The disease is mainly caused by the acute herniation of cervical disk from the acute trauma of hyperextension, which will compress the spinal cord at the same segment.

• 结论无骨折脱位型颈髓损伤主要为过伸急性外伤造成颈椎间盘突出压迫脊髓所致，MRI、SEP和MEP检查对颈脊髓损伤的程度和预后判断有参考价值。