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Measuring In-Shoe Plantar Strain Outcomes in the Presence of Callus: A Preliminary Study Using the STAMPS3D
Francesca Sairally1, David A Russell2,3, Heidi J Siddle4,5
1School of Mechanical Engineering, Institute of Design, Robotics and Manufacturing, University of Leeds, Leeds, UK.
Journal of Foot and Ankle Research
|June 13, 2026
Summary
This study used simulated callus to measure foot strain, finding subtle strain redistribution. These findings could improve diabetes-related foot ulcer prevention strategies by informing callus assessment and debridement.
Area of Science:
- Biomechanics
- Diabetic Foot Care
Background:
- Diabetes-related foot ulcers (DFU) are a growing concern, with plantar callus a key risk factor.
- Current preventative strategies like debridement focus on pressure, neglecting shear stress.
- Limited in-shoe devices hinder understanding of callus mechanics and debridement effects.
Purpose of the Study:
- To investigate the use of the STAMPS3D system for capturing 3D plantar strain with simulated callus.
- To explore plantar strain responses in healthy participants with simulated callus.
- To inform objective callus assessment and DFU prevention.
Main Methods:
- Proof-of-concept study using the STAMPS3D system.
- Simulated callus using multi-layer silicone inserts at the 1st metatarsal head and heel.
- Measured cumulative 3D plantar strain in healthy participants.
Main Results:
- Simulated callus caused subtle strain redistribution across the foot.
- Distinct local changes in strain were observed at callus sites.
Conclusions:
- Findings suggest potential for objective callus assessment.
- Results may guide debridement practices for DFU prevention.
- Contributes to understanding foot mechanics in the presence of callus.
