目的　介绍经脊柱后路Ⅰ期切除半椎体及椎板夹凸侧加压治疗完全分节型半椎体畸形的方法。方法　经C臂机精确定位后 ,先切除半椎体的棘突、椎板等后半部分 ,打开肋横关节 ,从横突外侧剪断肋骨 ,逐渐挖除椎体松质骨 ,作椎体间的植骨融合。将具有伸缩性可加长的“[”型Apofix内固定器植入椎板下 ,逐渐压缩“[”型装置 ,进行清醒试验并沿着器械区域作凸侧椎板植骨融合。结果　 7例患儿 8个单纯性半椎体 ,患儿平均年龄 7岁 ,半椎体位置包括下胸椎 (T10 )到下腰椎 (L3 ) ,术前Cobb角 2 2°～ 6 0° ,平均 39.3° ,术后矫正至 3°～ 30° ,平均 18.8° ,矫正率为 5 2 .0 %。随访时间 7～19个月 ,平均 12个月 ,最终随访的Cobb角 5°～ 33° ,平均 17.8°。结论　从脊柱后方入路不仅能Ⅰ期完整地切除半椎体 ,而且免除了前路手术创伤 ,又避免了因体位变动所造成的神经损伤 Objective To introduce a method of complete hepatectomy deformity treated with semi-vertebral body and laminoplasty by posterior spinal approach. Methods After precise positioning of the C-arm machine, the first half of the vertebral body and the spinous processes of the semicircular vertebrae were resected. The transverse rib joints were opened and the ribs were cut off from the transverse process. The cancellous bone of the vertebral body was gradually excised and the intervertebral body Bone fusion. The scalable “[” type Apofix internal fixator was placed under the lamina to gradually compress the “[” type device. The awake test was performed and the lateral laminar fusion was performed along the instrument area. Results The 7 patients had 8 simple hemivertebrates with a mean age of 7 years. The hemivertebra position included the lower thoracis (T10) to the lower lumbar (L3), the preoperative Cobb angle from 22 ° to 60 °, mean 39.3 °, postoperative correction to 3 ° ~ 30 °, an average of 18.8 °, correction rate of 52.0%. The follow-up time ranged from 7 to 19 months with an average of 12 months. Cobb angle at the final follow-up ranged from 5 ° to 33 ° with an average of 17.8 °. Conclusion The posterior spinal approach can not only completely remove the half-vertebral body in stage Ⅰ, but also avoid the surgical trauma of the anterior and avoid the nerve damage caused by the position change