Difference in the early postoperative change of the joint line convergence angle between opening wedge and closed wedge high tibial osteotomies

Table 3 Mean and distribution of degrees of change of the joint line convergence angle (JLCA)

		Preop to postop 0 day		Postop 0 to 2 days		Postop 2 days to 1 month		Postop 1 to 12 months
		OWHTO	CWHTO	OWHTO	CWHTO	OWHTO	CWHTO	OWHTO	CWHTO
Mean		− 0.6 ± 1.5	− 3.1 ± 2.8	− 2.0 ± 1.4	− 0.7 ± 1.5	0.1 ± 1.3	0.4 ± 2.1	0.1 ± 1.2	0.4 ± 1.5
Mean		P < 0.001		P < 0.001		P = 0.55		P = 0.36
Number	≤− 2°	25	63	54	23	8	10	5	4
	− 1°	22	7	17	25	12	13	12	13
	0°	21	7	12	19	27	18	39	31
	1°	12	5	2	12	21	21	19	20
	≥ 2°	5	3	0	6	17	23	10	17
		P < 0.001		P < 0.001		P = 0.56		P = 0.57

Note that radiographs were taken in the standing position at preoperative and postoperative 1 and 12 months, and in the supine position at postoperative 0 and 2 days

ISSN: 1749-799X