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. Author manuscript; available in PMC: 2009 Jun 1.
Published in final edited form as: Bone. 2008 Feb 15;42(6):1184–1192. doi: 10.1016/j.bone.2008.01.022

Table 1. Definitions of mechanical results.

Term Explanation Unit
Deflection First Deflection when the first element failed mm
Last Deflection when the last element failed
Minimum Minimum deflection
Maximum Maximum deflection
Deflection change rate Deflection increase rate per unit damage (or per failed element)

Force First Force when the first element failed N
Last Force when the last element failed
Minimum Minimum force
Maximum Maximum force
Force change rate Force increase rate per unit damage (or per failed element)

Stiffness First Stiffness when the first element failed N/mm
Last Stiffness when the last element failed
Minimum Minimum stiffness
Maximum Maximum stiffness
Stiffness change rate Stiffness decrease rate per unit damage (or per failed element)

Compliance First Compliance when the first element failed mm/N
Last Compliance when the last element failed
Minimum Minimum compliance
Maximum Maximum compliance
Compliance change rate Compliance increase rate per unit damage (or per failed element)

Deflection change rate was calculated as the slope of the linear regression between deflection and numbers of failed elements. Change rate of force, stiffness and compliance were calculated similarly.