Table 2.

Comparison of clinical outcomes between the IEF and PIF group.

	IEF group (n = 31)	PIF group (n = 28)	P value*
Operative time (min)	104.7 ± 13.8	73.6 ± 11.2	<0.0001
Blood loss (ml)	146.8 ± 36.2	105.9 ± 27.5	<0.0001
Duration of fusion (weeks)	13.0 ± 2.3	17.5 ± 2.9	<0.0001
Fusion rate (%)	31/31 (100%)	27/28 (96.4%)	0.9218
AOFAS score
Preoperative	45.5 ± 6.3	45.9 ± 6.6	0.8127
Final follow-up	84.8 ± 4.9	86.6 ± 5.4	0.1848
VAS score
Preoperative	8.4 ± 1.9	8.2 ± 1.5	0.6577
Final follow-up	2.5 ± 0.6	2.3 ± 0.7	0.2423
Complications			0.7304
Midfoot pain	3 (9.7%)	2 (7.1%)
Infection	1 (3.2%)	2 (7.1%)
Nonunion	0 (0)	1 (3.6%)

*Independent t test or chi-square test. The P values shown are for inter-group comparisons.