title: Prevalence and Imaging Characteristics of Nonmyelopathic and Myelopathic Spondylotic Cervical Cord Compression.
abstract: METHODS
  Cross-sectional population-based observational study.
  
  
  OBJECTIVE
  To estimate the prevalence of nonmyelopathic spondylotic cervical cord compression (NMSCCC) and cervical spondylotic myelopathy (CSM) in a population older than 40 years and to evaluate the magnetic resonance imaging (MRI) characteristics of these conditions.
  
  
  BACKGROUND
  The prevalence of neither NMSCCC nor CSM is known and there exists no commonly accepted quantitative MRI definition of cervical cord compression.
  
  
  METHODS
  A group of 183 randomly recruited volunteers, 93 women, median age 66 years, range 40-80 years, underwent MRI examination of the cervical spine and spinal cord on a 1.5 T device using conventional sequences from disc levels C2/C3 to C6/C7. The imaging criterion for cervical cord compression was defined as a change in spinal cord contour at the level of an intervertebral disc on axial or sagittal MRI scan.
  
  
  RESULTS
  MRI signs of cervical cord compression were found in 108 individuals (59.0%; 95% CI: 51.5%-66.2%); their numbers increased with age from 31.6% in the fifth decade to 66.8% in the eighth. Clinical signs of symptomatic CSM were found in two cases (1.1%), and 75 cases (41.0%) were without compression. An anteroposterior cervical canal diameter at the level of intervertebral disc (CDdisc) of less than 9.9 mm was associated with the highest probability of NMSCCC-odds ratio (OR) = 32.5, followed by a compression ratio of ≤0.5: OR = 11.1.
  
  
  CONCLUSIONS
  The prevalence of NMSCCC in a population older than 40 years is higher than previously reported and increases with age. CDdisc and compression ratio had the highest capacity to discriminate between subjects with and without asymptomatic compression, and their cut-off values could be used to objectify criteria for cervical cord compression.
  
  
  METHODS
  2.
authors: Department of Neurology, University Hospital Brno, Brno, Czech Republic.|Applied Neurosciences Research Group, Central European Institute of Technology, Masaryk University Brno, Brno, Czech Republic.
authors: Ivana
authors: I
authors: Kovalova
authors: Applied Neurosciences Research Group, Central European Institute of Technology, Masaryk University Brno, Brno, Czech Republic.|Multimodal and Functional Imaging Laboratory, Central European Institute of Technology, Masaryk University Brno, Brno, Czech Republic.|Department of Radiology, University Hospital Brno, Brno, Czech Republic.
authors: Milos
authors: M
authors: Kerkovsky
authors: Department of Neurology, University Hospital Brno, Brno, Czech Republic.
authors: Zdenek
authors: Z
authors: Kadanka
authors: Department of Neurology, University Hospital Brno, Brno, Czech Republic.
authors: Zdenek
authors: Z
authors: Kadanka
authors: Department of Neurology, University Hospital Brno, Brno, Czech Republic.
authors: Martin
authors: M
authors: Nemec
authors: Applied Neurosciences Research Group, Central European Institute of Technology, Masaryk University Brno, Brno, Czech Republic.|Department of Radiology, University Hospital Brno, Brno, Czech Republic.
authors: Barbora
authors: B
authors: Jurova
authors: Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
authors: Ladislav
authors: L
authors: Dusek
authors: Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
authors: Jiri
authors: J
authors: Jarkovsky
authors: Department of Neurology, University Hospital Brno, Brno, Czech Republic.|Applied Neurosciences Research Group, Central European Institute of Technology, Masaryk University Brno, Brno, Czech Republic.
authors: Josef
authors: J
authors: Bednarik
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D066193:Cervical Cord / Q000000981:diagnostic imaging* / Q000601:surgery; D002574:Cervical Vertebrae / Q000473:pathology* / Q000601:surgery; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D013115:Spinal Canal / Q000000981:diagnostic imaging; D013117:Spinal Cord Compression / Q000150:complications / Q000000981:diagnostic imaging / Q000453:epidemiology*; D055009:Spondylosis / Q000175:diagnosis