The test has several components. All of this information provides a comprehensive picture of the various factors contributing to the gait disorder.
Gait Analysis TestVideo Documentation – The patient is videotaped while walking.
3-D Gait Kinematics and Kinetics – Kinematics and kinetics provide a 3-D picture of how the body moves while walking. Kinematics is joint motion. Kinetics are the forces that act across the joints.
Reflective balls are taped onto the legs, pelvis and trunk (shoulders to hips). Digital cameras record the balls’ movements to measure joint motion at the trunk, pelvis, hip, knee and ankle. Kinetic data of the forces that cross the joints further reveal the causes of abnormal movement.
Electromyography (EMG) – EMG provides information about how the muscles work during walking. We can use the EMG data to see how each muscle acts and how it contributes to the gait abnormality. Pressure-sensitive foot switches tell us when and what part of the foot is on the ground or off the ground, indicating the stance and swing phases of gait. They allow the EMG data to be correlated with the stance and swing phases of the gait cycle.
Energy Expenditure – Energy expenditure is the amount of energy a person uses. Individuals with movement disorders typically use more energy while walking than individuals without movement disorders. This leads to fatigue. The efficiency of energy expenditure is critical to understanding the severity of the gait disorder.
Postural Balance – This tests the nature and magnitude of a balance impairment. Computerized measures of postural balance show how much the body sways while standing still. This is measured with the patient’s eyes open and with the eyes closed.
Preparing for a Gait AnalysisPlease be sure to bring all orthoses and ambulatory aids to your gait analysis. Orthoses may include ankle foot orthoses (AFO). Ambulatory aids include canes and walkers.
A typical gait analysis lasts approximately two hours.
Gait Analysis ReportAfter the gait analysis is completed, the referring health care provider will receive a:
- Paper copy of the patient report, including:
- Test results
- Treatment recommendations
- CD that contains:
- Electronic copy of the patient report