Table 3.

Ankle function differences at different time points (x ± s).

Group	Time point	AOFAS grade
Rear fixed group (n = 40)	T1	43.54 ± 2.53
	T2	66.52 ± 3.34
	T3	79.26 ± 4.66
	T4	92.03 ± 5.44
External fixation group (n = 40)
	T1	43.49 ± 2.28
	T2	55.52 ± 2.34
	T3	67.26 ± 3.46
	T4	85.03 ± 4.84
F timepoint		416.542
P timepoint		<0.001
F point∗group		534.334
P point∗group		<0.001