title: SWISSspine-a nationwide health technology assessment registry for balloon kyphoplasty: methodology and first results.
abstract: BACKGROUND
  The Swiss Federal Office of Public Health demanded a nationwide health technology assessment registry for cervical and lumbar total disc arthroplasty and for balloon kyphoplasty (BKP) to make a decision about reimbursement of these interventions.
  
  
  OBJECTIVE
  The goal of the SWISSspine registry is to generate evidence about the safety and effectiveness of these technologies. We report on results of patients with balloon kyphoplasty.
  
  
  METHODS
  Prospective, multicenter, observational case series.
  
  
  METHODS
  From March 2005 until June 2008, 331 interventions with 391 treated levels in 320 patients have been documented. 75.6% of patients were females with mean age of 74 years (range 43-95.2 years); mean age of males was 72.6 years (range 41.4-93 years).
  
  
  METHODS
  Surgeon-administered outcome instruments were primary intervention form for BKP, implant, and follow-up form; patient self-reported measures were Euroqol-5D, North American Spine Society, and a comorbidity questionnaire.
  
  
  METHODS
  Data were recorded perioperative, at 3 months, 1 year, and annually thereafter. Wilcoxon signed-rank test was used for comparison of preoperative to postoperative measurements. Multivariate regression was used for identifying factors with a significant influence on the outcome.
  
  
  RESULTS
  Significant and clinically relevant reduction of back pain, improvement of quality of life (QoL), and reduction of pain killer consumption were seen in the 1-year follow-up. Improvement of preoperative segmental kyphosis was achieved in the majority of cases. There were three symptomatic cement extrusions with radiculopathy documented.
  
  
  CONCLUSIONS
  Balloon kyphoplasty is a safe and effective treatment concerning pain reduction, QoL improvement, and pain killer consumption. The SWISSspine registry proved to be an excellent tool for evaluation of this new technology, and its results, in combination with an elaborate health technology assessment report, led to a permanent coverage of BKP by the basic health insurance.
authors.affiliation: Institute for Evaluative Research in Orthopaedic Surgery, University of Bern, Bern, Switzerland.
authors.forename: Peter
authors.initials: P
authors.lastname: Diel
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Reuss
authors.forename: Emin
authors.initials: E
authors.lastname: Aghayev
authors.forename: Patrick
authors.initials: P
authors.lastname: Moulin
authors.forename: Christoph
authors.initials: C
authors.lastname: Röder
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001416:Back Pain / Q000191:economics / Q000209:etiology / Q000601:surgery*; D005260:Female; D006801:Humans; D058498:Kyphoplasty / Q000191:economics / Q000379:methods; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D012042:Registries; D016103:Spinal Fractures / Q000150:complications / Q000191:economics / Q000601:surgery*; D013557:Switzerland