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Design criteria for rigid rocker shoes
C van Schie1, J S Ulbrecht, M B Becker
1Center for Locomotion Studies, Penn State University, University Park 16802, PA, USA.
Foot & Ankle International
|December 29, 2000
Summary
Rigid rocker shoes can reduce forefoot pressure but may increase heel and midfoot pressure. Optimal pressure reduction varies by shoe design and individual foot anatomy, suggesting personalized fitting and gait training are crucial for effective use.
Area of Science:
- Biomechanics
- Podiatry
- Orthopedics
Background:
- Footwear design significantly influences plantar pressure distribution.
- Rocker-soled shoes are designed to alter gait mechanics and reduce pressure on specific foot areas.
- Understanding the impact of rocker shoe parameters is essential for therapeutic applications.
Purpose of the Study:
- To evaluate the effects of rigid rocker shoe designs on plantar pressure distribution.
- To compare different rocker heights and axis locations against a control shoe.
- To identify optimal rocker shoe configurations for pressure reduction.
Main Methods:
- Seventeen healthy male subjects participated in the study.
- Nine different rigid rocker shoe designs were tested.
- Plantar pressures were measured and compared to a flexible, non-rockered control shoe.
Main Results:
- Rocker shoes reduced peak forefoot pressure but increased midfoot and heel pressure.
- Rocker axis location significantly affected plantar pressures, especially on the hallux.
- Optimal axis locations for pressure reduction varied between metatarsal heads (55-60% shoe length) and toes (65%).
Conclusions:
- No single rigid rocker shoe configuration was universally optimal for all subjects or all anatomical locations.
- Individual variability in response necessitates personalized assessment.
- Plantar pressure measurement and gait training are recommended to optimize the benefits of rigid rocker shoes.