title: [Lumbar interspinous non-fusion techniques: comparison between Coflex™ and Wallis].
abstract: OBJECTIVE
  To compare the short-term clinical outcome of non-fusion techniques using interspinous implantation Coflex(TM) and Wallis treatment in patients with lumbar spine degenerative diseases.
  
  
  METHODS
  Forty-one cases of lumbar stenosis, 18 of lumbar disc herniation, and 34 of lumbar stenosis with lumbar disc herniation were evaluated. Among the 43 cases receiving Coflex(TM) implantation, 41 had operations in one segment and 2 in 2 segments. In the other 50 cases with Wallis implantation, 47 had fixation of 1 segment and 3 had 2 segments fixed. JOA Score, Oswestry Disable Index (ODI) and VAS were used to evaluate the short-term clinical results.
  
  
  RESULTS
  The average operating time was 64.55 min in Coflex(TM) implantation with an average blood loss of 81.82 ml. The average operating time was 82.71 min in Wallis implantation, which caused an average blood loss of 89.66 ml. Significant improvements in the JOA Score, ODI and VAS were noted after the operations.
  
  
  CONCLUSIONS
  The two interspinous non-fusion techniques, Coflex and Wallis, produce good short-term clinical outcome in the treatment of lumbar spine degenerative diseases.
authors.affiliation: Department of Orthopedics, Guangdong General Hospital/Guangdong Academy of Medical Sciences, Guangzhou 510080, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Dong
authors.initials: D
authors.lastname: Yin
authors.forename: Qiao-min
authors.initials: QM
authors.lastname: Wang
authors.forename: Yun-bing
authors.initials: YB
authors.lastname: Chang
authors.forename: Shi-qiang
authors.initials: SQ
authors.lastname: Zhan
authors.forename: Shi-xing
authors.initials: SX
authors.lastname: Zeng
authors.forename: Yu-hong
authors.initials: YH
authors.lastname: Ke
authors.forename: Yi-sheng
authors.initials: YS
authors.lastname: Wang
authors.forename: Dan
authors.initials: D
authors.lastname: Xiao
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005592:Fracture Fixation / Q000379:methods*; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D013130:Spinal Stenosis / Q000601:surgery; D055815:Young Adult