title: [Using tension-band laminoplasty as a management for cervical ossification of posterior longitudinal ligament].
abstract: OBJECTIVE
  To evaluate the effectiveness of Tension-band Laminoplasty (TBL) as a management for cervical ossification of posterior longitudinal ligament (OPLL).
  
  
  METHODS
  Forty-six patients with cervical OPLL and undergone TBL in our department were chosen for the present study, including 33 male and 13 female. The mean age was 59 years (36 - 77 years). These OPLLs were confirmed as following types: 4 cases of single spinal level, 20 cases of continuous and 22 cases of mixed type. C(3) or/and C(2) levels were involved in 16 cases. All the patients underwent C(2 - 7) TBL, to which C(1) laminectomy was added for the cases with C(3) and/or C(2) involved. The neurological effect was evaluated by using Japanese Orthopedic Association (JOA) scoring criteria for cervical myelopathy. The anatomical effect was analyzed by comparing the pre- and post-operatively roentgenograms and MRIs. Wilcoxon's rank test was used for the statistics study.
  
  
  RESULTS
  For 42 (91.3%) patients, the JOA scores were improved for approximately 2 points after the operation, posterior shift of the spinal cord was obtained, while the diameters of dural sleeves and spinal cords were enlarged, yet the spinal alignments were not significantly interrupted.
  
  
  CONCLUSIONS
  TBL was proved an effective treatment for cervical OPLL and it could be expanded to include C(1) laminectomy if the spinal levels upper than C(4) were involved.
authors.affiliation: Department of Spine Surgery, China Rehabilitation Research Center and Department Orthopedic Surgery, the Capital University of Medical Science, Beijing 100068, China. jwnihaoma@yahoo.com.cn
authors.forename: Jun-wei
authors.initials: JW
authors.lastname: Zhang
authors.forename: Shigeru
authors.initials: S
authors.lastname: Hirabayashi
authors.forename: Yi
authors.initials: Y
authors.lastname: Hong
mesh_terms: D000328:Adult; D000368:Aged; D002574:Cervical Vertebrae / Q000601:surgery; D019299:Decompression, Surgical; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007796:Laminectomy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D017887:Ossification of Posterior Longitudinal Ligament / Q000601:surgery*; D016896:Treatment Outcome