title: Surgical Outcomes and Correlation of the Copenhagen Neck Functional Disability Scale and Modified Japanese Orthopedic Association Assessment Scales in Patients with Cervical Spondylotic Myelopathy.
abstract: METHODS
  Cross-sectional.
  
  
  OBJECTIVE
  Clinical outcome study comparing the Copenhagen Neck Functional Disability Scale (CNFDS) and modified Japanese orthopedic association (mJOA) assessment scales in patients with cervical spondylotic myelopathy (CSM).
  
  
  BACKGROUND
  Comparison of instruments that measure patient-reported outcomes is needed.
  
  
  METHODS
  A cross-sectional analysis was conducted. Ninety five patients with CSM were entered into the study and completed the CNFDS and the mJOA preoperatively and postoperatively. Correlation between the CNFDS and the mJOA was evaluated preoperatively and at the end of follow-up. Responsiveness to change of CNFDS and mJOA was also assessed. Clinical outcomes were also measured with the recovery rate of mJOA score at end of follow-up.
  
  
  RESULTS
  The mean age of patients was 58.2 (standard deviation, SD=8.7) years. Mean follow-up was 2.1 years (range, 1 to 4 years). The mJOA correlated strongly with the CNFDS score preoperatively and postoperatively (r=-0.81 and -0.82, respectively; p<0.001). The CNFDS and the mJOA were able to detect changes after the surgery (p<0.001). The mean mJOA recovery rate was 51.8% (SD=13.1%).
  
  
  CONCLUSIONS
  Surgery for the treatment of patients with CSM is an efficacious procedure. CNFDS and mJOA scores have a strong correlation in measuring disability among CSM patients.
authors.affiliation: Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Shirzad
authors.initials: S
authors.lastname: Azhari
authors.affiliation: Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Parisa
authors.initials: P
authors.lastname: Azimi
authors.affiliation: Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Sohrab
authors.initials: S
authors.lastname: Shazadi
authors.affiliation: Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Hamid
authors.initials: H
authors.lastname: Khayat Kashany
authors.affiliation: Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Nayeb Aghaei
authors.affiliation: Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Hassan Reza
authors.initials: HR
authors.lastname: Mohammadi
keywords: Cervical spondylotic myelopathy; Clinical outcome; Copenhagen Neck Functional Disability Scale; Modified Japanese orthopedic association