title: Efficacy and results of expansive laminoplasty in patients with severe cervical myelopathy due to cervical canal stenosis.
abstract: OBJECTIVE
  To assess the efficacy and results of expansive laminoplasty in advanced (Nurick's Grade III or greater) cervical myelopathy.
  
  
  METHODS
  We reviewed data in 24 patients who underwent cervical laminoplasty from January 1999 to December 2002. Nuricks grading was used for quantifying the neurological deficits and outcome analysis was done using Odom's criteria. A modified Hirabayashi's open door laminoplasty was done using Titanium miniplates and screws in 22 patients, autologous bone in one and hydroxyapatite spacer in one patient.
  
  
  METHODS
  There were 3 females and 21 males with a mean age of 56 years (range 39-72 years). Four patients presented in Nuricks Grade III, 15 in Grade IV and five in Grade V. MR imaging showed MSCS in 21 cases, OPLL in nine cases and ligamentum flavum hypertrophy in nine cases with cord signal changes being present in 19 cases.
  
  
  RESULTS
  All patients with duration of symptoms less than three years, and 50 % with duration ranging from three to six years had improvement by at least one Nurick's grade following surgery. Eighty-seven per cent Grade IV patients (ambulatory with support) improved to Grade III (ambulatory without support) following laminoplasty. Using Odom's criteria, 23 patients (95.8%) had a good to fair outcome.
  
  
  CONCLUSIONS
  Cord decompression with expansive laminoplasty using titanium miniplate fixation may improve the neurological outcome even in patients presenting late, and improvement by even one grade may have major 'quality of life' benefits for these patients.
authors.affiliation: Department of Neurosurgery, Neurosciences center, All India Institute of Medical Sciences, New Delhi-110 029, India.
authors.forename: D
authors.initials: D
authors.lastname: Agrawal
authors.forename: B S
authors.initials: BS
authors.lastname: Sharma
authors.forename: A
authors.initials: A
authors.lastname: Gupta
authors.forename: V S
authors.initials: VS
authors.lastname: Mehta
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures; D011859:Radiography; D012189:Retrospective Studies; D013117:Spinal Cord Compression / Q000000981:diagnostic imaging / Q000601:surgery*; D013130:Spinal Stenosis / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome