title: What Could Posturography Tell Us About Balance Problems in Parkinson's Disease?
abstract: Impaired balance in patients with Parkinson's disease (PD) leads to loss of balance and frequent falls. Computerized dynamic posturography allows the assessment of stance tasks whereas mobile posturography analyzes the balance in free-field conditions, where falls among PD patients commonly occur (e.g. sitting down or standing up). The aim of the present study is to assess postural stability in PD patients with both techniques.
  
  
  
  Prospective study.
  
  
  
  University Hospitals, ambulatory care (outpatient clinic).
  
  
  
  Thirty-three patients diagnosed with idiopathic PD.
  
  
  
  Balance assessment.
  
  
  
  Dizziness handicap inventory (DHI), activities-specific balance confidence scale (ABC), composite score of sensory organization test (SOT), results of free-field body sway analysis (standard balance deficit test (SBDT)), or geriatric SBDT.
  
  
  
  PD patients showed a significantly higher sway in the roll direction in almost all of the SBDT conditions. Also, pathological sway compared with normative values was more prominent in complex tasks. There is a significant correlation between the different objective variables of the postural study (SOT and SBDT) and the ABC, but not with the DHI. Finally, the percentage of PD patients with a pathological score in SOT-composite score was 54.5% whereas in SBDT-composite score it was significantly higher (93.9%).
  
  
  
  Mobile posturography is more accurate in depicting the reality of balance impairment in PD patients than platform posturography. Also, ABC relates better than DHI to the significant psychological consequences of balance impairments. An increased lateral trunk sway seems to be a key factor of postural instability in PD patients.
authors.affiliation: *Department of Otolaryngology, University Hospital Lucus Augusti, Lugo †Department of Otolaryngology, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain ‡Department of Otolaryngology at UKB, Hospital of the University of Berlin, Charité Medical School, Berlin, Germany §Department of Neurology, University Hospital of Santiago de Compostela, Santiago de Compostela ||Department of Neurology, University Hospital Lucus Augusti, Lugo, Spain.
authors.forename: Marcos
authors.initials: M
authors.lastname: Rossi-Izquierdo
authors.forename: Andrés
authors.initials: A
authors.lastname: Soto-Varela
authors.forename: Arne
authors.initials: A
authors.lastname: Ernst
authors.forename: Juan Pedro
authors.initials: JP
authors.lastname: Rubio-Rodríguez
authors.forename: Sofía
authors.initials: S
authors.lastname: Santos-Pérez
authors.forename: Ángel
authors.initials: Á
authors.lastname: Sesar
authors.forename: Miguel
authors.initials: M
authors.lastname: Alberte-Woodward
authors.forename: Mónica
authors.initials: M
authors.lastname: Guijarro-Del Amo
authors.forename: Elena San
authors.initials: ES
authors.lastname: Román-Rodríguez
authors.forename: Ana
authors.initials: A
authors.lastname: Faraldo-García
authors.forename: Alfonso
authors.initials: A
authors.lastname: Zubizarreta-Gutiérrez
authors.forename: Dietmar
authors.initials: D
authors.lastname: Basta
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications*; D004856:Postural Balance; D011446:Prospective Studies; D012678:Sensation Disorders / Q000175:diagnosis* / Q000209:etiology*