Table 2.

Primary and secondary outcome measures

Outcome measure	SB a		TS a		p-value
	n	score	n	score
AOFAS
6 weeks	54	67 (10)	52	66 (13)	0.7 c
6 months	53	87 (82–98)	54	88 (77–98)	1.0 b
1 years	53	93 (82–100)	52	90 (84–99)	0.5 b
2 years	48	97 (87–100)	47	97 (90–100)	0.7 b
MOXFQ
6 weeks	52	29 ((11)	48	31 (13)	0.4 c
6 months	55	14 (3–31)	53	14 (3–36)	0.7 b
1 year	52	5 (0–32)	51	6 (0–13)	0.9 b
2 years	48	5 (0–18)	47	3 (0–8)	0.2 b
OMA
1 year	53	90 (73–100)	52	90 (76–100)	0.4 b
2 years	47	90 (75–100)	45	100 (83–100)	0.2 b
VAS for pain during rest
6 weeks	53	1.0 (0–2)	49	1.0 (0–2)	0.9 b
6 months	54	0.0 (0–1)	54	0.0 (0–2)	0.1 b
1 year	53	0.0 (0–1)	52	0.0 (0–1)	0.5 b
2 years	48	0.0 (0–1)	47	0.0 (0–0)	0.6 b
VAS for pain during walking
6 weeks	53	2.0 (1–4)	49	3.0 (2–4)	0.3 b
6 months	54	1.0 (0–3)	54	1.0 (0–2)	0.8 b
1 year	53	1.0 (0–2)	52	1.0 (0–2)	0.9 b
2 years	48	0.0 (0–1)	47	0.0 (0–1)	0.2 b
VAS for pain at night
6 weeks	53	1.0 (0–2)	49	1.0 (0–3)	0.6 b
6 months	54	0.0 (0–0)	54	0.0 (0–1)	0.01 b
1 year	53	0.0 (0–0)	52	0.0 (0–0)	1.0 b
2 years	48	0.0 (0–1)	47	0.0 (0–0)	0.2 b
VAS for pain during daily activity
6 weeks	53	3.0 (2–6)	49	4.0 (2–7)	0.4 b
6 months	54	1.0 (0–3)	54	1.0 (0–2)	0.9 b
1 year	53	0.0 (0–2)	52	1.0 (0–2)	0.6 b
2 years	48	0.0 (0–29	47	0.0 (0–0)	0.03 b
EQ-5D index
6 weeks	53	0.7 (0.6–0.8)	53	0.7 (0.3–0.7)	0.1 b
6 months	54	0.8 (0.7–1.0)	54	0.8 (0.7–1.0)	0.9 b
1 year	53	1.0 (0.8–1.0)	52	1.0 (0.8–1.0)	1.0 b
2 years	48	1.0 (0.8–1.0)	47	1.0 (0.9–1.0)	0.3 b
EQ-5D VAS
6 weeks	52	73 (15)	51	63 (18)	0.004 c
6 months	53	89 (70–95)	54	80 (74–90)	0.2 b
1 year	52	85 (71–95)	52	88 (76–90)	0.6 b
2 year	48	85 (70–95)	45	90 (77–95)	0.6 b

^a For not normally distributed data values are given as median (IQR)

in parentheses and for normally distributed data as mean (SD).

^b Nonparametric (Mann–Whitney U) test.

^c 2-sided t-test for independent samples.