Table 2.

Hypothesis tests ($\mathrm{\Delta }CS$: tibiofibular clear space difference, $\mathrm{\Delta }z$: vertical offset, $\mathrm{\Delta }\alpha$: translation angle, n: native group, o: operative group)

H0	H1	Test	P value	decision
$\left|{\mathrm{\Delta }CS}_o\right|=\left|{\mathrm{\Delta }CS}_n\right|$	$\left|\mathrm{\Delta },{\mathit{CS}}_o\right|>\left|{\mathrm{\Delta }CS}_n\right|$	Wilcoxon rank-sum test	.046	H0 rejected
$\left|{\mathrm{\Delta }z}_o\right|=\left|{\mathrm{\Delta }z}_n\right|$	$\left|{\mathrm{\Delta }z}_o\right|>\left|{\mathrm{\Delta }z}_n\right|$	Wilcoxon rank-sum test	.029	H0 rejected
$\left|{\mathrm{\Delta }\alpha }_o\right|=\mathrm{\Delta }\left|{\alpha }_n\right|$	$\left|{\mathrm{\Delta }\alpha }_o\right|>\left|{\mathrm{\Delta }\alpha }_n\right|$	Wilcoxon rank-sum test	< .001	H0 rejected
${\mathrm{\Delta }CS}_o=0$	${\mathrm{\Delta }CS}_o\ne 0$	One-sample t test	.167	H0 accepted
${\mathrm{\Delta }z}_o=0$	${\mathrm{\Delta }z}_o\ne 0$	One-sample t test	.025	H0 rejected
${\mathrm{\Delta }\alpha }_o=0$	${\mathrm{\Delta }\alpha }_o\ne 0$	One-sample t test	.017	H0 rejected