Effect of bone morphology of the tibia plateau on joint line convergence angle in medial open wedge high tibial osteotomy

Table 3 Results of correlation analyses among various radiographic parameters for knee joints with a pagoda-shaped tibial plateau

	JLCA (Pre)	JLCA (Post)	ΔJLCA	MPTA (Pre)	MPTA (Post)	ΔMPTA	HKA (Pre)	HKA (Post)	ΔHKA
JLCA (Pre)	1.00	0.69	−0.42	0.13	0.66	0.28	− 0.28	0.37	0.37
JLCA (Post)		1.00	0.35	0.35	0.52	−0.05	0.15	0.07	−0.06
ΔJLCA			1.00	0.27	−0.20	− 0.44	0.56	− 0.39	−0.57
MPTA (Pre)				1.00	0.48	−0.81	0.72	−0.34	− 0.64
MPTA (Post)					1.00	0.11	−0.04	0.35	0.20
ΔMPTA						1.00	−0.85	0.63	0.87
HKA (Pre)							1.00	−0.48	−0.90
HKA (Post)								1.00	0.81
ΔHKA									1.00

MPTA medial proximal tibial angle, HKA hip-knee-ankle angle, JLCA joint line convergence angle, mLDFA mechanical lateral distal femoral angle, Pre before surgery, Post after surgery
Δ represents the change in each radiological parameter after surgery
Correlations were determined using a simple linear regression model

ISSN: 1471-2474