Primary clinical results of posterior hemivertebra resection in the treatment of congenital kyphoscoliosis / 中国矫形外科杂志

ABSTRACT

[Objective]To evaluate the surgical results of posterior hemivertebra resection in the treatment of congenital kyphoscoliosis caused by hemivertebra.[Method]From May 2000 to November 2005,14 cases with hemivertebra treated with one stage posterior hemivertebra resection were reviewed,which included males and females.All the cases underwent one stage posterior hemivertebra resection,fusion and correction with instrumentation.The mean age at time of surgery was 7.4 years old.Location of the hemivertebra included 7 cases at thoracic spine and 7 cases at lumbar spine.[Result]The mean operation time was 4.7 hours,the mean blood loss and blood transfusion during operation was 500 ml and 560 ml respectively.The fusion level was 2 to 8 segments,average 3.5 segments.Scoliosis was corrected from 46.2? to 17.3?with a correction rate of 62.6%.Kyphosis was corrected from 48.3? to 16.2? with a correction rate of 68.7%.At the final follow-up,the coronal Cobb's angle was 21.7? with a 4.4? loss of correction;the sagittal Cobb's angle was 18.7 with a 2.50 loss.Peri-operative complication included two of implant malposion,delayed wound healing.No reoperation due to the progressive deformititie was need.[Conclusion]One stage posterior hemivertebra resection has a good capability of correcting congenital kyphoscoliosis caused by a singe hemivertebra.It can save operation time and is less invasive compared to combined approach,and is indicated to thoracic and lumbar hemi-vertebra with fewer complications.