Table 3.

Correlations between distal tibial rotation and the change in knee-ankle joint before and after uniplane OWHTO.

Dependent variables	Independent variables	Correlation coefficient	P value†
TRA	∆HKA	0.726	.008*
	∆MPTA	0.860	.003*
	∆TT-TG	−0.136	.762
	∆ADA	−0.148	.566
	∆ARA	−0.086	.711

ADA = ankle deformity angle, ARA = ankle rotation angle., HKA angle = hip-knee-ankle angle, MPTA = medial proximal tibial angle, TRA = distal tibial rotation angle, TT-TG = tibial tuberosity-trochlear groove distance, Uniplane OWHTO = uniplane medial open-wedge high tibial osteotomy.

^*P < .05.

^†Pearson correlation test was performed to determine the associated change of radiographic parameters before and after HTO that affect the TRA.