F̄	grand mean of all axial force profiles
Fmnt	axial force at time point “t” of gait trial “n” for axial force profile “m”
F̄t	average axial force profile at time point “t” during the stance phase of gait
m	index for the axial force profile (TKR, m=1; ISO, m=2)
M	total number of axial force profiles in the waveform comparison (M=2)
n	index for the gait trial number
N	total number of gait trials for waveform comparison (TKR, N=30; ISO, N=1)
t	index for time point during the stance phase of gait
T	total number time points for waveform comparison (T=100)
Radj	coefficient of multiple correlation for waveform comparison
${\text{R}}_{\text{adj}}^2$	coefficient of multiple determination for waveform comparison