Table 3.

Comparison of the angles of tibial plateau varus angle and tibial plateau retroversion angle between the two groups of patients at different times after surgery (mean ± SD)

Group	n	TPA angle (°)		PA angle (°)
		Immediately after surgery	18 mo after surgery	Immediately after surgery	18 mo after surgery
Study group	49	86.34 ± 3.81	86.04 ± 2.51	9.54 ± 2.20	9.83 ± 1.72
Control group	48	86.51 ± 3.44	85.78 ± 2.92	9.31 ± 2.14	9.91 ± 1.84
t value		-0.231	0.471	0.522	-0.221
P value		0.818	0.639	0.603	0.825

TPA: Tibial plateau varus angle; PA: Tibial plateau retroversion angle.