Table 4.

Comparison different time (Group 2) (n = 8).

	AOFAS	VAS
Preoperative	63.5 ± 2.07	5.25 ± 0.88
4 months postoperatively	84.1 ± 1.80	2.3 ± 0.46
12 months postoperatively	83.9 ± 1.24	1.5 ± 0.53
F	369.202	73.50
p	< 0.05	< 0.05
pa	< 0.05	< 0.05
pb	< 0.05	< 0.05
pc	0.777	0.032

p^a compare the results between preoperative with 4 months postoperatively.

p^b compare the results between preoperative with 12 months postoperatively.

p^c compare the results between 4 months with 12 months postoperatively.