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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: Acta Biomater. 2017 Dec 8;67:307–318. doi: 10.1016/j.actbio.2017.11.052

Table 1.

Collagen damage parameters (calculated from linear regression of CHP data) compared to stretches at maximum stiffness and yield stretches (calculated from stress-stretch curves).

Collagen Damage Parameters
Loading Direction Stretch at Max Stiffness (mean ± SD) Yield Stretch (mean ± SD) Damage Threshold (95% CI) % Damage Per Unit Stretch beyond λC R2
Circumfer ential λMAX = 1.15 ± 0.01 λY = 1.20 ± 0.01 λC = 1.17 (1.15–1.19) m = 52.8 0.55
Axial λMAX = 1.28 ± 0.07 λY = 1.33 ± 0.06 λC = 1.35 (1.29–1.42) m = 66.7 0.79