Cervical Laminoplasty (Hattori's Method) and It's Long Term Follow-up Results

This paper presents the clinical results of patients with laminoplasty for cervical spondylotic myelopathy(CSM). The follow-up terms were more than 10 years after surgery. There were 28 males and 8 females with ages ranging 39 to 73 years old(average 52 years old) . The duration of follow-up ranged from 10 years to 25 years(average 17 years) . At the time of discharge, 31 patients(86％) were excellent or good. At the time of the follow-up, there were 21 patients(57％) in these categories. The best clinical results were obtained I year after surgery. Postoperative malalignment was rare and postoperative range of motion (ROM) of the neck was 58％ of preoperative. There were 13 patients(36％) with intervertebral instability preoperatively. After the laminoplasty, the instability continued in 5 patients and disappeared in 8 patients.There were 28 patients(78％) without postoperative changes of cervical alignment. Laminoplasty is very useful procedures in the point of postoperative malalignment and clinical results.

頚椎症性脊髄症

椎椎弓形成術

治療成績