Table 1.

Comparison of WOMAC index, EQ-5D, and health status in the 3 groups preoperatively and at 12–15 months. Values are mean (SD)

	WOMAC			EQ-5D			Health status
	preop.	postop.	p-value	preop.	postop.	p-value	preop.	postop.	p-value
Decreased FO group, n = 71	61 (13)	20 (19)	< 0.001	0.44 (0.26)	0.82 (0.19)	< 0.001	42 (20)	79 (17)	< 0.001
Restored FO group, n = 73	60 (14)	15 (15)	< 0.001	0.43 (0.22)	0.86 (0.17)	< 0.001	46 (19)	78 (20)	< 0.001
Increased FO group, n = 78	61 (13)	15 (14)	< 0.001	0.51 (0.66)	0.86 (0.19)	< 0.001	41 (19)	80 (19)	< 0.001
p-valuea	0.8			0.6			0.2

^aP-value comparing the preoperative values in the 3 groups.