title: Percutaneous kyphoplasty with or without temporary unipedicle screw reduction : A retrospective comparative study of osteoporotic vertebral fractures.
abstract: BACKGROUND
  Temporary unipedicle screw reduction with percutaneous kyphoplasty (TUSR-PKP) is a relatively new method for managing osteoporotic vertebral compression fractures (OVCFs). A clinical retrospective comparative study was conducted to verify whether TUSR-PKP was noninferior to simple PKP regarding the management of OVCFs.
  
  
  METHODS
  A total of 38 consecutive patients who sustained OVCFs without neurological deficits and had undergone surgeries in our hospital from June 2012 to January 2014 were included in the study: 24 patients underwent simple PKP (control group) and the other 14 patients underwent TUSR-PKP (treatment group). All 38 patients were asked to participate in a long-term (>1 year) follow-up. Visual analog scale (VAS) pain scores and Oswestry Disability Index (ODI) were recorded, and the Cobb angles and the vertebral body heights were measured on the lateral radiographs before surgery and on day 1, as well as 1, 3, 6, and 12 months after surgery.
  
  
  RESULTS
  The patients in the treatment group had better vertebral height gain and greater improvement on ODI compared with the control group (p < 0.05). The VAS scores of the two groups were similar at all points until the end of the 1‑year follow-up period. Two patients from the treatment group and 5 patients from the control group had cement leakage. In the control group, 3 patients suffered adjacent or nonadjacent vertebra fractures.
  
  
  CONCLUSIONS
  TUSR-PKP is a safe and effective surgical option for OVCFs. Compared with simple PKP, TUSR-PKP provided at least equal results for OVCFs. Moreover, during the postsurgery observations, TUSR-PKP showed potential advantages including vertebral height gain, ODI improvement, and fewer subsequent refractures.
authors.affiliation: Orthopedic Trauma, Peking University Third Hospital, No. 49 North Garden Road, HaiDian District, 100191, Beijing, China.
authors.forename: T
authors.initials: T
authors.lastname: Zhu
authors.affiliation: Orthopedic Trauma, Peking University Third Hospital, No. 49 North Garden Road, HaiDian District, 100191, Beijing, China. tianyunbj@sina.com.
authors.forename: Y
authors.initials: Y
authors.lastname: Tian
authors.affiliation: Orthopedic Trauma, Peking University Third Hospital, No. 49 North Garden Road, HaiDian District, 100191, Beijing, China. zhouf@bjmu.edu.cn.
authors.forename: F
authors.initials: F
authors.lastname: Zhou
authors.affiliation: Orthopedic Trauma, Peking University Third Hospital, No. 49 North Garden Road, HaiDian District, 100191, Beijing, China.
authors.forename: L
authors.initials: L
authors.lastname: Shang
authors.affiliation: Orthopedic Trauma, Peking University Third Hospital, No. 49 North Garden Road, HaiDian District, 100191, Beijing, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Orthopedic Trauma, Peking University Third Hospital, No. 49 North Garden Road, HaiDian District, 100191, Beijing, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Lv
mesh_terms: D003131:Combined Modality Therapy / Q000379:methods; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods; D006801:Humans; D058498:Kyphoplasty / Q000379:methods*; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000379:methods; D000070799:Open Fracture Reduction / Q000295:instrumentation*; D058866:Osteoporotic Fractures / Q000175:diagnosis* / Q000601:surgery*; D065289:Pedicle Screws; D011474:Prosthesis Design; D016103:Spinal Fractures / Q000175:diagnosis* / Q000601:surgery*; D016896:Treatment Outcome
keywords: Fractures, bone; Osteoporotic vertebral compression fractures; Pedicle screws; Reduction; Spine