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SHR Neuro Cancer Cardio Lipid Metab Microb

Zwirner, J; Ondruschka, B; Scholze, M; Hammer, N.
Surface coating and speckling of the human iliotibial tract does not affect its load-deformation properties.
Sci Rep. 2020; 10(1):20747-20747 Doi: 10.1038/s41598-020-77299-1 [OPEN ACCESS]
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Leading authors Med Uni Graz: Hammer Niels
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Abstract:: Stochastic surface patterns form an important requirement to facilitate digital image correlation and to subsequently quantify material properties of various tissues when loaded and deformed without artefacts arising from material slippage. Depending on the samples' natural colour, a surface pattern is created by speckling with colour or dye only, or it requires combined surface coating and speckling before to enhance the contrast, to facilitate high-quality data recording for mechanical evaluation. However, it is unclear to date if the colours deployed for coating and speckling do significantly alter the biomechanical properties of soft tissues. The given study investigated the biomechanical properties of 168 human iliotibial tract samples as a model for collagen-rich soft tissues, separated into four groups: untreated, graphite speckling only, water-based coating plus graphite speckling and solvent-based coating plus graphite speckling following a standardized approach of application and data acquisition. The results reveal that elastic modulus, ultimate tensile strength and strain at maximum force of all groups were similar and statistically non-different (p ≥ 0.69). Qualitatively, the speckle patterns revealed increasing contrast differences in the following order: untreated, graphite speckling only, water-based coating plus graphite speckling and solvent-based coating plus graphite speckling. Conclusively, both coating by water- and solvent-based paints, as well as exclusive graphite speckling, did not significantly influence the load-deformation parameters of the here used human iliotibial tract as a model for collagen-rich soft tissues. In consequence, water- and solvent-based coating paints seem equally suitable to coat collagen-rich soft tissues for digital image correlation, resulting in suitable speckle patterns and unbiased data acquisition.
Find related publications in this database (using NLM MeSH Indexing): Artifacts -; Biomechanical Phenomena -; Cadaver -; Coated Materials, Biocompatible - adverse effects; Fascia Lata - physiology; Female -; Humans -; Image Processing, Computer-Assisted - methods; Male -; Materials Testing - methods; Middle Aged -; Stress, Mechanical -; Surface Properties -; Tensile Strength -