Table 2.

Bipedal distance and osteoarthritis grade.

	Bipedal distance		Osteoarthritis grade
	Double-leg standing radiograph		Single-leg standing radiograph		Double-leg standing radiograph
Radiological parameters	Coefficient (rp)	p-value	Coefficient (rs)	p-value	Coefficient (rs)	p-value
JLOAF	−0.555	<0.001*	−0.012	0.942	−0.146	0.368
JLOAM	−0.574	<0.001*	0.091	0.575	0.034	0.835
JLOAT	−0.549	<0.001*	0.181	0.264	0.122	0.454
MJLA	−0.002	0.992	0.060	0.714	0.105	0.519
MPTA	0.019	0.908	−0.077	0.637	−0.004	0.980
JLCA	0.062	0.702	0.518	<0.001*	0.471	0.002*
KAJA	0.036	0.826	−0.001	0.994	−0.013	0.937
HKA	0.017	0.915	−0.326	0.040*	−0.316	0.047*

Statistical significance*.

Abbreviations: r_p, Pearson correlation coefficient; r_s, Spearman correlation coefficient; JLOAF, joint line orientation angle by femoral condyles; JLOAM, joint line orientation angle by middle knee joint space; JLOAT, joint line orientation angle by tibial plateau; MJLA, Mikulicz joint line angle; MPTA, medial proximal tibial angle; JLCA, joint line convergence angle; KAJA, knee ankle joint angle; HKA, hip-knee-ankle angle.

Note: Bipedal distance is evaluated by intertalar distance, osteoarthritis grade (I, II, III) is evaluated by Kellgren-Lawrence classification.