Table 2.

Comparisons of preoperative and postoperative pain in the four groups

	Mini plate group (n = 31)	Hollow screw group (n = 44)	Kirschner wire group (n = 62)	Steel wire suture group (n = 27)
Before surgery	6.74 ± 0.77	6.41 ± 0.66	6.42 ± 0.62	6.63 ± 0.74
At 3 days after surgery	3.90 ± 0.75*	3.86 ± 0.46*	4.58 ± 0.67*#&	4.89 ± 0.51*#&
At 1 month after surgery	0.65 ± 0.49*	0.43 ± 0.50*	0.55 ± 0.50*	0.41 ± 0.50*

Notes: Measurement data were presented as mean ± standard deviation; one-way analysis of variance (ANOVA) with replicate measurement was used to compare data at different time points within-group, while multi-group data was compared using single factor ANOVA; n, number

*vs. the preoperative scores, p < 0.05; ^#vs. the mini plate group, p < 0.05; ^&vs. the hollow screw group, p < 0.05