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Changes to level ground transtibial amputee gait with a weighted backpack.
Sean S Doyle1, Edward D Lemaire2, Markus Besemann3
1University of Ottawa, School of Human Kinetics, Canada; Ottawa Hospital Research Institute, Centre for Rehabilitation Research and Development, Canada.
Clinical Biomechanics (Bristol, Avon)
|December 21, 2013
Summary
Transtibial amputees can walk with a weighted backpack, but gait adaptations occur. Focus on gait training to address asymmetries and strengthen hip and knee flexors for improved prosthetic function.
Area of Science:
- Biomechanics
- Prosthetics
- Rehabilitation Engineering
Background:
- Limited research exists on backpack use in amputee populations.
- Understanding gait with weighted packs is crucial for improving amputee quality of life.
Purpose of the Study:
- To investigate the effects of a weighted backpack on the gait of unilateral transtibial amputees.
- To identify kinematic and kinetic changes during level ground walking with a load.
Main Methods:
- Ten male, K4-level, unilateral transtibial amputees participated.
- Gait analysis was performed with and without a 24.5 kg backpack on level ground.
- Temporal-spatial parameters, and peak kinematic/kinetic values of the lower limb and trunk were analyzed.
Main Results:
- Gait changes with a backpack were similar to able-bodied individuals.
- Reduced pelvis speed and range of motion were observed.
- Increased knee flexion and hip flexion during weight acceptance, with greater prosthetic foot-ankle deformation.
Conclusions:
- K4-level amputees can manage a backpack load during level walking.
- Prosthetic limb adaptations suggest potential limitations with increased weight or higher impact activities.
- Gait training should target asymmetries and hip/knee flexor strength.
