Evaluation of Outcomes of Posterior Hemivertebra Resection in The Treatment of Congenital kypho-scoliosis with Hemivertebra

Abstract：Objective To evaluate the outcomes of surgical treatment for congenital spinal deformity. Methods From 2008 to 2013,there were 35 consecutive cases with congenital scoliosis were managed surgically with one-stage posterior hemi-vertebra resection and segmental instrumentation fixation and fusion. There were 22 males and 13 females,with the average age of 17. 06 years(5 to 48 years). Long cassette standing radiographs were taken before and after surgery and at the final follow-up. Scoliosis,kyphosis and other indexes were measured preoperatively and immediatly postoperatively as well as at the latest follow-up. We calculated the improvement rate separately,and recorded the perioperative and long-term complications. Results The average operative time was 3. 68 hours with a mean 767. 78 mL of blood loss. The average follow-up was 26. 8 months ranging from 5 to 58 months. The scoliosis was(44. 41 ± 18. 49)° before surgery,(13. 07 ± 9. 11)° after surgery,and(15. 54 ± 8. 94)° at latest follow-up. The kyphosis was(34. 58 ± 26. 18)° before surgery and(10. 36 ± 11. 94)° after surgery and (11. 94 ± 11. 81)° at latest follow-up. Apical vertebral translation,cranial and caudal compensatory curve and other indexes were improved. There was new kyphosis in 1 case,bone graft unfusion in 1 case. In through the second operation,we extended the fixed section,dramatically corrected deformity. There were no major complications and no neurologic damage. Conclusion Posterior hemivertebra resection and internal fixation is a safe and reasonable surgical option for congenital and kyphosis de-formity.