Table 4.

Radiological outcome in both groups before TKA

	Index*			Index*	Control*
	pre HTO	pre TKA	P	pre TKA	pre TKA	P
FTAa	-3.0° (-9; 0)	3.0° (-2; 9)	< 0.0001	3.0° (-2; 9)	2.0° (-3; 11)	NS
PIb	6.0° (-2; 14)	3.0° (-13; 16)	0.04	3.0° (-13; 16)	6.5° (4; 16)	0.04
ISc	1.06 (0.74; 1.29)	0.95 (0.58; 1.20)	0.002	0.95 (0.58; 1.20)	1.07 (0.76; 1.29)	0.05

* The values are given as the mean (range)

- Negative value indicates varus alignment

^a Femorotibial angle

^b Posterior inclination tibia plateau

^c Patella height: Insall-Salvati ratio