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

Gait Analysis - Why?

Clinical Evaluation of Walking Injury/Disease/Disability Gait Analysis Decision Making Treatment

Quantitative Gait Analysis Objectives Validation of Observed Characteristics Validation of Observed Characteristics Identification of Un-observed Characteristics Identification of Un-observed Characteristics Retention of Information Retention of Information Numerical Representation of Characteristics Numerical Representation of Characteristics Graphic Representation of Characteristicss Graphic Representation of Characteristicss Comparison of Characteristics to: Comparison of Characteristics to: Previous observationsPrevious observations Established Standards/NormsEstablished Standards/Norms

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

GaitTrak ComputerizedTwo-Dimensional Video Analysis of Gait

GaitTrak - Why ? GaitTrak Provides: Assessment of Function Assessment of Function Objective Analysis Objective Analysis Precise Measurement Precise Measurement Numerical and Graphic Output Numerical and Graphic Output Comparison to Standard Measures Comparison to Standard Measures Assessment of factors that can be addressed clinically Assessment of factors that can be addressed clinically

Computerized Video Analysis What Does it Involve?

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

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

Video Processing Video Processor Digitizes Location of Markers Video Processor Digitizes Location of Markers

Video Data Tracking Video Processor Tracks the Markers Video Processor Tracks the Markers

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

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

GaitTrak Attach the Markers

GaitTrak Recording Gait Data

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

GaitTrak Track, Edit, and Analyze the Data

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

GaitTrak Factors Influencing Accuracy Marker Placement Marker Placement Marker Movement Marker Movement Non-planar Motions Non-planar Motions Reflection/lighting considerations Reflection/lighting considerations In-accurate Anthropometric Measurements In-accurate Anthropometric Measurements Broken Paths Broken Paths Subject Awareness Subject Awareness

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

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