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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: J Biomech Eng. 2013 Jan;135(1):011001. doi: 10.1115/1.4023092

Table 2.

Parameter values post-laceration reported as a percentage of pre-laceration values for each laceration depth. Values reported are mean percentage ± standard deviation and asterisk indicates a significant difference between pre- and post- laceration values for each group (p<0.05).

Laceration Depth 0.5mm 1.0mm 2.0mm 2.75mm

Nominal Stress Parameters
Cyclic Parameters σ peak 69.0 ± 5.9 56.7 ± 8.3* 54.5 ± 7.5* 43.7 ± 14.5*
σ decrease 38.5 ± 6.3(ISP)* 28.6 ± 8.2* 28.2 ± 6.1* 21.0 ± 8.2*
Relaxation Parameters σ max 79.3 ± 3.0 72.2 ± 4.5 61.5 ± 9.4* 50.3 ± 14.2*
σ decay 73.6 ± 4.1 38.9 ± 5.2 52.9 ± 11.2* 42.6 ± 12.7*

MRA Stress Parameters

Cyclic Parameters σ peak 92.6 ± 5.4 76.5 ± 18.3 119.6 ± 25.3 153.6 ± 60.1
σ decrease 51.6 ± 7.8* 38.8 ± 13.8* 62.2 ± 17.0* 73.7 ± 31.1
Relaxation Parameters σ max 106.5 ± 4.1 97.0 ± 15.1 134.4 ± 26.4 178.3 ± 63.2
σ decay 98.8 ± 5.3 92.2 ± 12.5 115.7 ± 28.3 151.8 ± 59.3

Stiffness Parameter

Stiffness 79.0 ± 10.3 69.3 ± 8.3 65.4 ± 9.5* 49.3 ± 14.5*

Specified Load Parameters

Strain 149.4 ± 15.4* 171.4 ± 28.4* 160.9 ± 21.1* 186.7 ± 42.8*
σ MRA 134.7 ± 8.5* 134.0 ± 15.0* 218.2 ± 27.2* 357.6 ± 75.4*