Neck movement speed in cervical dystonia


  • Diederik Zegers De Beyl MD, PhD,

    1. Service de Neurologie, Hôpital Erasme, Université Libre de Bruxelles, Belgique
    Search for more papers by this author
  • Patrick Salvia PT, PhD

    Corresponding author
    1. Laboratoire d'Anatomie, Biomécanique et Organogénèse, Faculté de Médecine, Université Libre de Bruxelles (ULB), Belgique
    • Laboratoire d'Anatomie, Biomécanique et Organogénèse (CP 619), 808 Route de Lennick, Bruxelles 1070, Belgique
    Search for more papers by this author

  • Potential conflict of interest: nothing to report.


Clinical scales of patients with cervical dystonia do not rate neck movement velocity. We prospectively measured range of neck movements and movement velocities in 35 consecutive patients with cervical dystonia (CD) and 29 normal controls. Reduction of peak velocities in patients with CD was the most robust abnormality and was correlated to TWSTRS. Coupled movements out of attempted movement plane were increased in the patient group. Movement range was moderately though significantly reduced. We conclude that slowing of voluntary neck movements is a frequent and hitherto unrecognized feature in CD. © 2009 Movement Disorder Society