目的探讨环钻在完全分节型半椎体性先天性脊柱侧凸患者经椎弓根切除半椎体手术中的价值。方法回顾性分析2002年7月至2011年7月，在我院行半椎体切除的完全分节型半椎体性先天性脊柱侧凸患儿25例，男8例，女17例，年龄5～14岁，平均9.6岁。9例接受常规的经椎弓根半椎体切除术(A组)，16例采用环钻经椎弓根行半椎体切除术(B组)。记录并比较两组患者的手术时间、出血量，术后侧凸角和后凸角的矫正率及末次随访时丢失率。结果所有患者均获随访，随访时间平均(21±6.2)个月，两组病例的年龄及性别组成相匹配。手术时间A组平均(213±33)min；B组平均(174±26)min，两组比较差异有统计学意义(t＝7.23，P＜0.05)。出血量A组平均(840±118)ml；B组平均(710±73)ml；两组比较差异有统计学意义(t＝4.38，P＜0.05)。侧凸Cobb’s角A组术后即刻矫正率为81.9%，术后1年随访矫正丢失率为4.3%；B组术后即刻矫正率为83.0%，术后1年随访矫正丢失率为3.5%，差异无统计学意义(t＝1.54，P＝0.16；t＝1.35，P＝0.20)。后凸角A组术后即刻矫正率为77.9%，术后1年随访矫正丢失率为7.1%；B组术后即刻矫正率为74.3%，术后1年随访矫正丢失率为5.4%，差异无统计学意义(t＝1.28，P＝0.22；t＝1.12，P＝0.29)。两组患者术中及随访期间均未发生严重神经、血管及内固定物相关并发症。结论经椎弓根行半椎体切除联合内固定矫形是治疗完全分节型半椎体性先天性脊柱侧凸的有效手段，应用环钻在增加手术安全性的前提下可明显缩短手术时间并减少术中出血。“,”Objective To explore the value of trephine in the treatment of congenital fully-segmented hemivertebra spinal scoliosis in transpedicular hemivertebra resection. Methods 25 patients with congenital fully-segmented hemivertebra spinal scoliosis were treated by hemivertebra resection in our hospital from July 2002 to July 2011, whose data were retrospectively analyzed. There were 8 males and 17 females, with a mean age of 9.6 years old ( range;5-14 years ). 9 patients received traditional transpedicular hemivertebra resection ( group A ) and 16 patients received transpedicular hemivertebra resection using trephine ( group B ). The operation time, blood loss, postoperative correction rate of the scoliotic angle and kyphotic angle and loss rate in the latest follow-up were recorded and compared between the 2 groups. Results All patients were followed up, and the mean follow-up time was ( 21±6.2 ) months. There were no signiifcant differences in age and sex between the 2 groups. The mean operation time was ( 213±33 ) min in group A and ( 174±26 ) min in group B, and the differences were statistically signiifcant ( t=7.23, P<0.05 ). The mean blood loss was ( 840±118 ) ml in group A and ( 710±73 ) ml in group B, and the differences were statistically signiifcant ( t=4.38, P<0.05 ). The correction rate of scoliosis Cobb’s angle immediately after the operation was 81.9%in group A and 83.0%in group B, and the differences were not statistically signiifcant ( t=1.54, P=0.16 );The loss rate of scoliosis Cobb’s angle in the follow-up 1 year after the operation was 4.3%in group A and 3.5%in group B, and the differences were not statistically signiifcant ( t=1.35, P=0.20 ). The correction rate of kyphotic angle immediately after the operation was 77.9%in group A and 74.3%in group B, and the differences were not statistically signiifcant ( t=1.28, P=0.22 );The loss rate of kyphotic angle in the follow-up 1 year after the operation was 7.1%in group A and 5.4%in group B, the differences were not statistically signiifcant ( t=1.12, P=0.29 ). No severe complications related to nerves, blood vessels or internal ifxation instrumentation occurred in both groups during the operation and follow-up. Conclusions Transpedicular hemivertebra resection combined with internal ifxation is an effective way in treating congenital fully-segmented hemivertebra spinal scoliosis, which can obviously not only shorten the operation time, but also reduce blood loss on the premise of increasing the safety of operation using trephine.