The Cerebellum

, Volume 11, Issue 1, pp 194–211

Gait Pattern in Inherited Cerebellar Ataxias

  • Mariano Serrao
  • Francesco Pierelli
  • Alberto Ranavolo
  • Francesco Draicchio
  • Carmela Conte
  • Romildo Don
  • Roberto Di Fabio
  • Margherita LeRose
  • Luca Padua
  • Giorgio Sandrini
  • Carlo Casali
Article

Abstract

Our aim was to perform a comprehensive analysis of the global and segmental features of gait in patients with genetically confirmed inherited ataxias. Sixteen patients with autosomal dominant (spinocerebellar ataxia, SCA1 or 2) or recessive (Friedreich’s ataxia, FRDA) ataxia were studied. We used a motion analysis system to record gait kinematic and kinetic data. We measured the mean values of global (time–distance parameters, COM displacement, support moment) and segmental gait parameters (joint displacement and inter-joint coordination), as both discrete and continuous variables, and their variability and correlations with International Cooperative Ataxia Rating Scale (ICARS) scores. We found a marked difference in all global gait parameters between the ataxic patients and the controls and close correlations between longer stride and stance duration and lower gait, posture and total ICARS scores. The only difference between the two patient groups was a shorter step length in the FRDA patients. As regards the segmental features, we found a significantly different waveform shape for all continuous kinematic and kinetic measures between the ataxic patients and the healthy controls, but only minor differences for the discrete measures. Intersegmental coordination evaluated using the continuous relative phase method revealed an irregular alternating joint behaviour without clear evidence of the synchronous pattern of alternating proximal/distal joint seen in healthy subjects. For almost all gait parameters we observed a markedly higher intra-subject variability in the ataxic patients versus the controls, which was strongly related to the clinical ICARS scores. Patients with chronic, progressive inherited ataxias lose the ability to “stabilize” a walking pattern that can be repeated over time. The most peculiar aspect of the gait of inherited ataxia patients, regardless the different genetic forms, seems to be the presence of increased variability of all global and segmental parameters rather than an invariant abnormal gait pattern.

Keywords

Gait analysis Inherited ataxias SCA FRDA Motor control 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Mariano Serrao
    • 1
    • 2
  • Francesco Pierelli
    • 1
  • Alberto Ranavolo
    • 3
  • Francesco Draicchio
    • 3
  • Carmela Conte
    • 2
    • 3
  • Romildo Don
    • 4
  • Roberto Di Fabio
    • 1
  • Margherita LeRose
    • 1
  • Luca Padua
    • 5
  • Giorgio Sandrini
    • 6
  • Carlo Casali
    • 1
  1. 1.Department of Medical and Surgical Science and BiotechnologiesSapienza University of RomeLatinaItaly
  2. 2.Rehabilitation CentrePoliclinico ItaliaRomeItaly
  3. 3.Laboratory of Physiology, Ergonomics, Posture and MovementNational Institute of Occupational Safety and PreventionRomeItaly
  4. 4.Rehabilitation Centre, “Progetto Amico”LatinaItaly
  5. 5.Fondazione Don GnocchiMilanoItaly
  6. 6.IRCCS, “C. Mondino Institute of Neurology” FoundationUniversity of PaviaPaviaItaly

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