Clinical Assessment of Locomotion GaitTrak

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Clinical Assessment of Locomotion GaitTrak

• Gait Analysis - Why ?
• Applications for Gait Analysis
• Gait Analysis Technology
• The GaitTrak Motion Analysis System
• GaitTrak Basics
• The GaitTrak Report
• Interpretation of Gait Analysis Data
• Factors Influencing Accuracy
• Unique Applications for GaitTrak

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• Gait Analysis - Why?

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Clinical Evaluation of Walking

• Injury/Disease/Disability
• Gait Analysis
• Decision Making
• Treatment

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Quantitative Gait AnalysisObjectives

• Validation of Observed Characteristics
• Identification of Un-observed Characteristics
• Retention of Information
• Numerical Representation of Characteristics
• Graphic Representation of Characteristicss
• Comparison of Characteristics to
• Previous observations
• Established Standards/Norms

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Common Gait Analysis Applications

• Orthopaedic - Joint
  Reconstruction Joint
  Replacement Cerebral Palsy
  Orthotic and Brace Evaluation
• Prosthetics - Design and
  Fitting Evaluation of...
  Gait Training
• Sports Medicine -
  Walking/Running Injuries
  Evaluation of Foot Orthotics
  Assessment of Functional Activity
• Neurology - Stroke
  Brain Injury Neuromuscular
  Disease
• Geriatrics - Arthritis
  Parkinson's Disease
  Chronic Fallers Assessment of
  Activities of Daily Living

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GaitTrak

• Computerized
• Two-Dimensional
• Video Analysis of Gait

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GaitTrak - Why ? GaitTrak Provides

• Assessment of Function
• Objective Analysis
• Precise Measurement
• Numerical and Graphic Output
• Comparison to Standard Measures
• Assessment of factors that can be addressed
  clinically

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Computerized Video AnalysisWhat Does it Involve?
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GaitTrakHow Does it Work ?

• Anatomical Landmarks Identified by Passive
  Markers
• Markers Illuminated by Light Source
• Video Camera Records Movement of Markers
• Video Processor Digitizes Location of Markers
• Computer/Software Determines Spatial and
  Temporal Characteristics of Marker Movement
• Computer/Software Creates Graphic and Numeric
  Report

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Data Collection

• Anatomical Landmarks Identified by Passive
  Markers
• Markers Illuminated by Light Source
• Video Camera Records Movement of Markers

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Video Processing

• Video Processor Digitizes Location of Markers

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Video Data Tracking

• Video Processor Tracks the Markers

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Computer Analysis

• Computer/Software Determines Spatial and Temporal
  Characteristics of Marker Movement
• Computer/Software Creates Graphic and Numeric
  Report

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GaitTrakGait Analysis Procedures

• Complete and/or review patient history
• Complete and/or review physical exam
• Observe patient walk (record on video)View
  bi-lateralView front/back
• Prep patient for data collection
• Provide practice walking trials
• Record video for free-speed walking
• Record video for fast walking

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GaitTrakAttach the Markers
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GaitTrakRecording Gait Data
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GaitTrakProcess the Data

• Adjust the Thresholds
• Create a Window (if necessary)
• Send the Data (Manual Transfer)

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GaitTrakTrack, Edit, and Analyze the Data
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GaitTrakComponents of the Report

• Patient Information
• Trial Information
• General Gait Characteristics
• Joint Range of Motion (numeric and graphic)
• Joint Angular Velocity (numeric and graphic)
• Phases of the Gait Cycle (temporal and kinematic)

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GaitTrakFactors Influencing Accuracy

• Marker Placement
• Marker Movement
• Non-planar Motions
• Reflection/lighting considerations
• In-accurate Anthropometric Measurements
• Broken Paths
• Subject Awareness

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GaitTrakCommon Questions

• How accurate are the GT measurements ?
• How should the norms be used?
• What can I do if a marker is obscured ?
• Can I average multiple trials ?
• Is 3-D analysis better than 2-D ?
• Can I integrate a force plate with GT ?
• Can I integrate EMG with GT ?

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GaitTrakUnique Applications

• Stair Walking
• Treadmill Locomotion
• Sit-to-Stand
• Cycling
• Stepping (i.e. curb, bench, etc.)
• Skiing, Glider, Elliptical, etc.
• Up/Down Incline (over-ground and treadmill)