Comparison of different fibula procedures in tibiotalocalcaneal arthrodesis with a retrograde intramedullary nail: a mid-term retrospective study

Table 2 Comparison of surgical parameters and functional evaluation in three groups

group	operation time (min)	fusion time (week)	fusion rate	AOFAS				VAS
group	operation time (min)	fusion time (week)	fusion rate	pre-op	post-op	t	p	pre-op	post-op	t	p
FO	119.3 ± 11.7	17.2 ± 1.9	90.1%	36.6 ± 9.1	77.0 ± 7.6	16.334	<0.001	7.0 ± 1.4	1.7 ± 1.2	16.438	<0.001
FS	131.3 ± 17.1	15.1 ± 2.8	94.7%	34.4 ± 10.4	79.5 ± 5.7	19.739	<0.001	6.9 ± 1.3	1.6 ± 1.1	14.738	<0.001
FP	112.2 ± 12.6	16.8 ± 1.9	94.4%	37.7 ± 7.6	78.3 ± 5.5	21.567	<0.001	7.0 ± 1.3	1.9 ± 1.0	14.541	<0.001
F/χ²	8.912	5.256	0.549	0.851	0.453			0.028	0.182
p	p<0.001	0.008	1.000	0.432	0.638			0.972	0.834

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