title: [Cervical posterior laminoplasty operation using T-saw and coralline hydroxyapatite spacer].
abstract: OBJECTIVE
  To assess the efficacy of using T-saw and coralline hydroxyapatite (CHA) spacer in the cervical spinous process-splitting laminoplasty.
  
  
  METHODS
  38 patients were operated with cervical laminoplasty using T-saw and CHA spacer, among them there were 31 multisegmental cervical spondylotic myelopathy patients, 5 ossification of posterior longitudinal ligament (OPLL) patients, 2 anterior fusion failure patients. All the patients were evaluated by JOA scores.
  
  
  RESULTS
  we followed the 38 patients for average 26 months. Numbness,strength and gait were improved obviously. The flat rate of spinal cord in MRI improved 0.23;CHA fusion percentage 74%; no primary spinal cord injury was found. Average operation time was 2 hour 50 min;average bleeding during the operation was 280 ml; The average JOA score improve rate was 61%.
  
  
  CONCLUSIONS
  The methods, using T-saw and CHA spacer in the cervical spinous process-splitting laminoplasty, which was characterized by simple, short time on operation and thorough decompression of spinal cord, was a ideal optional method in the cervical laminoplasty operation.
authors.affiliation: Spine Department, Beijing Jishuitan Hospital, Beijing 100035, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Tian
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Hu
authors.forename: Zhi-yu
authors.initials: ZY
authors.lastname: Li
authors.forename: Yong-gang
authors.initials: YG
authors.lastname: Xing
authors.forename: Yong-qing
authors.initials: YQ
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D002516:Ceramics / Q000627:therapeutic use*; D002574:Cervical Vertebrae / Q000601:surgery*; D019299:Decompression, Surgical / Q000379:methods*; D005260:Female; D006801:Humans; D006882:Hydroxyapatites / Q000627:therapeutic use*; D007796:Laminectomy; D008297:Male; D008875:Middle Aged
chemical_list: D006882:Hydroxyapatites; C119955:coralline hydroxyapatite