Conclusion: Decrease of postoperative cervical lordosis, especially kyphosis may be one of the factors to cause axial symptoms after modified open door laminoplasty using Itoh method.

• 结论：伊藤法“单开门”颈椎椎管扩大椎板成形术后轴性症状较多见，术后颈椎前凸减小，尤其是颈椎后凸可能是产生轴性症状的原因之一。