Biomechanical influence of cavity fillers on periwound soft tissue strains in sacral pressure injuries
Abstract
Objective: Deep cavity pressure injuries (PIs) are commonly managed with wound fillers, the biomechanical role of which remains poorly understood. This study aimed to assess how the mechanical properties of filler influence periwound soft tissue strains. Method: The study combined hydrated mechanical testing of commercial cavity fillers with finite element modelling of sacral stage 3 PIs to assess how filler-related parameters affected periwound soft tissue shear strains. Results: Sensitivity analysis showed that filling ratio was the dominant factor governing the volume of mechanically preserved tissue, outweighing filler stiffness, friction and compressibility. High filling ratios markedly reduced strain concentrations, while more compliant, adipose-like fillers further improved tissue protection. Conclusion: The findings of this study highlight the importance of dead-space elimination and tissue-matched filler design to mechanically protect the surrounding tissues and thereby improve healing.
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BibTeX
@article{staubmilants2026biomechanical,
title = {{Biomechanical influence of cavity fillers on periwound soft tissue strains in sacral pressure injuries}},
author = {Coraline Staub-Milants and Grégory Chagnon and Noémie Briot and Laurent Pasquinet and Yohan Payan},
journal = {Journal of Wound Care},
year = {2026},
month = oct,
doi = {10.12968/jowc.2026.0310},
eprint = {2610.38548},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05841168v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Biomechanical influence of cavity fillers on periwound soft tissue strains in sacral pressure injuries
AU - Coraline Staub-Milants
AU - Grégory Chagnon
AU - Noémie Briot
AU - Laurent Pasquinet
AU - Yohan Payan
PY - 2026
DA - 2026/10/02
JO - Journal of Wound Care
DO - 10.12968/jowc.2026.0310
UR - https://hal.science/hal-05841168v1
AB - Objective: Deep cavity pressure injuries (PIs) are commonly managed with wound fillers, the biomechanical role of which remains poorly understood. This study aimed to assess how the mechanical properties of filler influence periwound soft tissue strains. Method: The study combined hydrated mechanical testing of commercial cavity fillers with finite element modelling of sacral stage 3 PIs to assess how filler-related parameters affected periwound soft tissue shear strains. Results: Sensitivity analysis showed that filling ratio was the dominant factor governing the volume of mechanically preserved tissue, outweighing filler stiffness, friction and compressibility. High filling ratios markedly reduced strain concentrations, while more compliant, adipose-like fillers further improved tissue protection. Conclusion: The findings of this study highlight the importance of dead-space elimination and tissue-matched filler design to mechanically protect the surrounding tissues and thereby improve healing.
SN - 0969-0700
ER -