title: Closing-opening wedge osteotomy for thoracolumbar traumatic kyphosis.
abstract: BACKGROUND
  Surgical treatment modalities for post-traumatic kyphosis (PTK) remain controversial. Like vertebral column resection, closing-opening wedge osteotomy (COWO) can achieve satisfactory results for kyphosis with multiple etiologies. However, few studies have assessed this procedure for PTK. Our purpose was to evaluate the radiographic and clinical outcomes of COWO in a selected series of patients with PTK via a single posterior approach.
  
  
  METHODS
  In this retrospective case series, seven patients with symptomatic PTK in the thoracolumbar spine were reviewed. Five patients underwent surgery at the time of initial injury, and the other two initially underwent conservative treatment. All seven patients underwent COWO procedures through a single posterior approach. The Cobb angle was assessed preoperatively, postoperatively, and at the final follow-up. A visual analog scale (VAS) and the American Spinal Injury Association scale were used to evaluate back pain and neurological function preoperatively and at final follow-up, respectively. Operation-associated complications were also recorded.
  
  
  RESULTS
  The mean follow-up period was 34.3 months (range, 24 to 43 months). The mean kyphotic angle was significantly (P <0.05) reduced from 57.7° (range, 36° to 100°) preoperatively to 8° postoperatively (range, -12° to 50°). The mean VAS improved from 5.9 to 2.1 (P <0.05). Three patients exhibited improved neurological function. Bony fusion was achieved in all patients. No significant correction loss or permanent complication was noted.
  
  
  CONCLUSIONS
  Though technically demanding, COWO via a single posterior approach can provide satisfactory outcomes for selected patients with PTK. Additional studies are required to improve patient selection and outcomes for this condition.
authors.affiliation: School of Rehabilitation Medicine, Capital Medical University, Beijing, 100068, China. muzixiangxin@sina.com.|Department of Spine Surgery, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China. muzixiangxin@sina.com.
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Rehabilitation Medicine, Capital Medical University, Beijing, 100068, China. 13910158172@163.com.|Department of Spine Surgery, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China. 13910158172@163.com.
authors.forename: Junwei
authors.initials: J
authors.lastname: Zhang
authors.affiliation: School of Rehabilitation Medicine, Capital Medical University, Beijing, 100068, China. tigerandtang@sina.com.|Department of Spine Surgery, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China. tigerandtang@sina.com.
authors.forename: Hehu
authors.initials: H
authors.lastname: Tang
authors.affiliation: School of Rehabilitation Medicine, Capital Medical University, Beijing, 100068, China. luzhen1980@126.com.|Department of Spine Surgery, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China. luzhen1980@126.com.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Lu
authors.affiliation: School of Rehabilitation Medicine, Capital Medical University, Beijing, 100068, China. 568505677@qq.com.|Department of Spine Surgery, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China. 568505677@qq.com.
authors.forename: Shizheng
authors.initials: S
authors.lastname: Chen
authors.affiliation: School of Rehabilitation Medicine, Capital Medical University, Beijing, 100068, China. hongyihhyy@163.com.|Department of Spine Surgery, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing, 100068, China. hongyihhyy@163.com.
authors.forename: Yi
authors.initials: Y
authors.lastname: Hong
mesh_terms: D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007738:Kyphosis / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods; D012189:Retrospective Studies; D016896:Treatment Outcome; D055815:Young Adult