title: [Confidence high viscosity bone cement system and postural reduction in treating acute severe osteoporotic vertebral compression fractures].
abstract: OBJECTIVE
  To evaluate the effectiveness of Confidence high viscosity bone cement system and postural reduction in treating acute severe osteoporotic vertebral compression fracture (OVCF).
  
  
  METHODS
  Between June 2004 and June 2009, 34 patients with acute severe OVCF were treated with Confidence high viscosity bone cement system and postural reduction. There were 14 males and 20 females with an average age of 72.6 years (range, 62-88 years). All patients had single thoracolumbar fracture, including 4 cases of T11, 10 of T12, 15 of L1, 4 of L2, and 1 of L3. The bone density measurement showed that T value was less than -2.5. The time from injury to admission was 2-72 hours. All cases were treated with postural reduction preoperatively. The time of reduction in over-extending position was 7-14 days. All patients were injected unilaterally. The injected volume of high viscosity bone cement was 2-6 mL (mean, 3.2 mL).
  
  
  RESULTS
  Cement leakage was found in 3 cases (8.8%) during operation, including leakage into intervertebral space in 2 cases and into adjacent paravertebral soft tissue in 1 case. No clinical symptom was observed and no treatment was performed. No pulmonary embolism, infection, nerve injury, or other complications occurred in all patients. All patients were followed up 12-38 months (mean, 18.5 months). Postoperatively, complete pain relief was achieved in 31 cases and partial pain relief in 3 cases; no re-fracture or loosening at the interface occurred. At 3 days after operation and last follow-up, the anterior and middle vertebral column height, Cobb angle, and visual analogue scale (VAS) score were improved significantly when compared with those before operation (P < 0.05); and there was no significant difference between 3 days and last follow-up (P > 0.05).
  
  
  CONCLUSIONS
  Confidence high viscosity bone cement system and postural reduction can be employed safely in treating acute severe OVCF, which has many merits of high viscosity, long time for injection, and easy-to-control directionally.
authors.affiliation: Department of Spinal Surgery, Affiliated Yongchuan Hospital of Chongqing Medical University, Yongchuan Chongqing, 402160, P.R.China.
authors.forename: Bo
authors.initials: B
authors.lastname: Li
authors.forename: Qunbo
authors.initials: Q
authors.lastname: Wang
authors.forename: Yu
authors.initials: Y
authors.lastname: Yu
authors.forename: Wei
authors.initials: W
authors.lastname: Du
authors.forename: Gaohai
authors.initials: G
authors.lastname: Shao
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001843:Bone Cements / Q000627:therapeutic use*; D005260:Female; D050815:Fractures, Compression / Q000209:etiology / Q000601:surgery*; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000150:complications; D012189:Retrospective Studies; D013904:Thoracic Vertebrae / Q000601:surgery; D016896:Treatment Outcome; D054854:Vertebroplasty / Q000379:methods*
chemical_list: D001843:Bone Cements