Related Experiment Videos
Pendular model of paraplegic swing-through crutch ambulation
1Rehabilitation Engineering Program, Northwestern University, Chicago, IL 60611.
Journal of Rehabilitation Research and Development
|January 1, 1988
Summary
This study modeled swing-through crutch walking for spinal cord injury patients. Low mechanical work is needed, but arm/shoulder support increases metabolic energy demands.
Area of Science:
- Biomechanics
- Rehabilitation Engineering
Background:
- Individuals with complete T11-T12 spinal cord injury often use assistive devices for ambulation.
- Understanding the biomechanics of crutch walking is crucial for improving mobility and reducing energy expenditure.
Observation:
- Kinematic data from swing-through crutch ambulation was analyzed.
- A 3-link pendular model was developed and validated against measured kinematics.
- Shoulder motion was identified as a key factor in gait parameters.
Findings:
- The 3-link pendular model accurately simulated observed kinematics when shoulder motion was constrained.
- Shoulder control significantly impacts ground clearance, stride timing, and gait fluidity.
- Mechanical work during the body-swing phase is minimal, but metabolic energy demand is high due to arm and shoulder support.
Implications:
- Alternative assistive mechanisms could be developed to enhance ground clearance and stabilize the upper body during weight-bearing.
- Optimizing crutch ambulation strategies may reduce metabolic cost for individuals with spinal cord injury.
- Further research into upper extremity support systems could improve mobility outcomes.