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Biomechanical analysis of rollator walking
Tine Alkjaer1, Peter K Larsen, Gitte Pedersen
1Institute of Medical Anatomy, The Panum Institute, University of Copenhagen, Blegdamsvej 3C, DK-2200 Copenhagen N, Denmark. t.alkjaer@mai.ku.dk
Biomedical Engineering Online
|January 10, 2006
Summary
Rollator use alters walking biomechanics, increasing hip flexion and reducing knee extensor load. While not fully unloading lower extremities, long-term effects require further study.
Area of Science:
- Biomechanics
- Gait analysis
- Assistive devices
Background:
- Rollators are common walking aids.
- Limited understanding of their biomechanical impact on gait.
Purpose of the Study:
- Investigate biomechanical effects of rollator use on walking patterns in healthy individuals.
Main Methods:
- Three-dimensional inverse dynamics analysis.
- Calculated sagittal and frontal plane joint dynamics and kinematics (ankle, knee, hip).
- Study included seven healthy female participants.
Main Results:
- Increased hip flexion, decreased knee/ankle flexion during rollator walking.
- Reduced range of motion (ROM) in ankle and knee joints.
- 50% reduction in knee extensor moment, smaller ankle plantarflexor/hip abductor moments.
- Increased hip extensor angular impulse with rollator use.
Conclusions:
- Rollator walking unloads ankle/knee extensors and increases hip extensor contribution.
- Does not lead to overall unloading of lower extremity muscles/joints.
- Long-term effects of rollator use remain unknown and warrant further research.