Clinical biomechanics (Bristol, Avon) · 2025
Design and biomechanical function of indoor-specific versus regular custom-made footwear for people with diabetes at high risk of foot ulceration.
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Vossen L E, van Netten J J, Busch-Westbroek T E, Bus S A
Аннотация
BACKGROUND: Custom-made footwear designed specifically for indoor use increases footwear adherence in people with diabetes at high ulcer risk. The design and biomechanical requirements of such footwear are important if they are to safely replace regular custom-made footwear for indoor use. We aimed to compare indoor-specific versus regular custom-made footwear for design characteristics and biomechanical function.
METHODS: Indoor-specific pressure-optimized custom-made footwear (i.e. lower weight, easier to don and doff, more comfortable and breathable materials) was provided to 36 participants with diabetes, neuropathy, and a recently healed plantar foot ulcer or amputation, who already had regular pressure-optimized custom-made footwear. Both footwear types were assessed for their shoe design features and compared using Cohen's Kappa and percentage agreement. In-shoe plantar pressures were measured during walking in both footwear types, from which multiple (center-of-)pressure parameters were calculated and compared using paired t-tests and statistical parametric mapping.
FINDINGS: Of the 36 participants, a total 132 shoes, 66 per footwear type, were analyzed. Cohen's Kappa ranged from -0.17 to 0.72 for different design features and percentage agreement from 45 % to 97 %. Outcomes for all peak pressure parameters were statistically non-significantly higher (0-3 %, P > 0.05) in the indoor-specific compared to regular footwear. Center-of-pressure parameters were also not significantly different.
INTERPRETATION: No statistically significant or clinically relevant differences were found in biomechanical functions between indoor-specific and regular custom-made footwear, despite differences found in footwear design. Indoor-specific footwear is thus a biomechanically safe alternative to regular custom-made footwear for use indoors in people with diabetes at high ulcer risk.
METHODS: Indoor-specific pressure-optimized custom-made footwear (i.e. lower weight, easier to don and doff, more comfortable and breathable materials) was provided to 36 participants with diabetes, neuropathy, and a recently healed plantar foot ulcer or amputation, who already had regular pressure-optimized custom-made footwear. Both footwear types were assessed for their shoe design features and compared using Cohen's Kappa and percentage agreement. In-shoe plantar pressures were measured during walking in both footwear types, from which multiple (center-of-)pressure parameters were calculated and compared using paired t-tests and statistical parametric mapping.
FINDINGS: Of the 36 participants, a total 132 shoes, 66 per footwear type, were analyzed. Cohen's Kappa ranged from -0.17 to 0.72 for different design features and percentage agreement from 45 % to 97 %. Outcomes for all peak pressure parameters were statistically non-significantly higher (0-3 %, P > 0.05) in the indoor-specific compared to regular footwear. Center-of-pressure parameters were also not significantly different.
INTERPRETATION: No statistically significant or clinically relevant differences were found in biomechanical functions between indoor-specific and regular custom-made footwear, despite differences found in footwear design. Indoor-specific footwear is thus a biomechanically safe alternative to regular custom-made footwear for use indoors in people with diabetes at high ulcer risk.