title: Lateral pelvic displacement during gait: abnormalities after stroke and changes during the first month of rehabilitation.
abstract: OBJECTIVE
  To measure the amplitude and symmetry of lateral pelvic displacement (LPD) in patients with acute hemiparetic stroke; to assess the relationship between LPD and walking speed; and to quantify changes in LPD during 1- and 4-week intervals in the early stages of gait rehabilitation.
  
  
  METHODS
  LPD amplitude and symmetry were measured in stroke patients on admission to acute rehabilitation, 1 week later, and at 4-week follow-up. Performance was compared with sex-, height-, and age-matched control subjects.
  
  
  METHODS
  Urban geriatric inpatient rehabilitation facility in Australia.
  
  
  METHODS
  Fifteen patients with a single-hemisphere stroke, confirmed by computed tomography, were compared with the data from 12 control subjects. Patients' FIM trade mark instrument scores ranged from 54 to 124.
  
  
  METHODS
  Gait rehabilitation involved twice-daily individual physical therapy sessions of 45 to 60 minutes, 5 days a week, incorporating whole and part practice, mental rehearsal, verbal feedback on performance, manual guidance, and strengthening techniques.
  
  
  METHODS
  Three-dimensional motion analysis of LPD amplitude and symmetry; and preferred walking speed over 10m.
  
  
  RESULTS
  Compared with controls, stroke patients initially showed increased amplitude of LPD, with no difference in LPD symmetry. A statistically significant linear relationship existed between walking speed and amplitude of LPD (r=-.53; P=.04), yet not between walking speed and symmetry (r=-.41, P=.13). Amplitude and symmetry values remained consistent during the 4-week period of rehabilitation.
  
  
  CONCLUSIONS
  These results provide baseline LPD values for patients with acute hemiparetic stroke and demonstrate the relationship between LPD and walking speed. Change in LPD during inpatient rehabilitation was not uniform or predictable, particularly during longer periods. This highlights the need for therapists to regularly reassess each patient during the early rehabilitation phase after stroke, especially given that individual differences can be marked.
authors.affiliation: School of Physiotherapy, La Trobe University, Bundoora, Australia. K.Dodd@latrobe.edu.au
authors.forename: Karen J
authors.initials: KJ
authors.lastname: Dodd
authors.forename: Meg E
authors.initials: ME
authors.lastname: Morris
mesh_terms: D000368:Aged; D001696:Biomechanical Phenomena; D016022:Case-Control Studies; D003936:Diagnosis, Computer-Assisted / Q000379:methods; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D008297:Male; D009069:Movement Disorders / Q000503:physiopathology / Q000534:rehabilitation*; D010291:Paresis / Q000209:etiology / Q000503:physiopathology / Q000534:rehabilitation*; D010388:Pelvis / Q000502:physiology; D026741:Physical Therapy Modalities / Q000379:methods; D020127:Recovery of Function; D020521:Stroke / Q000150:complications / Q000503:physiopathology; D000071939:Stroke Rehabilitation; D016896:Treatment Outcome; D014741:Video Recording; D016138:Walking / Q000502:physiology