title: [The study of treatment of osteoporotic thoracolumbar multi-vertebral compressive fractures by kyphoplasty with one balloon].
abstract: OBJECTIVE
  To evaluate the effect of kyphoplasty in treating osteoporotic thoracolumbar multi-vertebral compressive fractures with one balloon.
  
  
  METHODS
  thirteen cases (37 vertebral bodies) of osteoporotic thoracolumbar multi-vertebral compressive fractures were treated. The patients were women, range 65 to 79 years old, and all with well intact posterior wall of vertebral body. 37 thoracolumbar vertebral bodies were treated by Kyphoplasty with one balloon under "C" armed imaging guiding.
  
  
  RESULTS
  All 13 patients tolerated well. The mean height of the anterior, media and posterior vertebral bodies was (1.9 +/- 0.5) cm, (1.5 +/- 0.5) cm, (2.6 +/- 0.5) cm preoperatively and (2.1 +/- 0.4) cm, (2.2 +/- 0.4) cm, (2.8 +/- 0.5) cm postoperatively (P < 0.001). The mean kyphosis was improved from (31.3 +/- 14.1) degrees to (24.8 +/- 11.3) degrees. There was not back pain and deformed correction was maintained well after 17.3 months' follow up, No complication occurred.
  
  
  CONCLUSIONS
  The balloon was not damaged, because the pressure was lower than usual pressure, the cost of patients was saved. In this study, we fulfilled small amount of cement in vertebral body which reduced the leakage of cement. Fracture of close vertebral body was also reduced because of lower stiffness and modulus of elasticity of adjacent vertebral body.
authors.affiliation: Department of Orthopaedic, Beijing Friendship Hospital Affiliate of Capital University of Medical Science, Beijing 100050, China. tanghai@medmail.com.cn
authors.forename: Hai
authors.initials: H
authors.lastname: Tang
authors.forename: Ying
authors.initials: Y
authors.lastname: Lu
authors.forename: Bing-qiang
authors.initials: BQ
authors.lastname: Wang
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
mesh_terms: D000368:Aged; D002404:Catheterization / Q000295:instrumentation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods*; D005598:Fractures, Spontaneous / Q000209:etiology / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation / Q000379:methods; D010024:Osteoporosis / Q000150:complications*; D016103:Spinal Fractures / Q000209:etiology / Q000601:surgery*; D016896:Treatment Outcome