Table 3 Variations in the ATFL length, ATFL width, ATFL/CFL angle, and ATFL/ATiFL angle between the neutral position and 20° plantar flexion

ATFL length

Neutral position

19.7 ± 2.2

17.9 ± 4.1

16.6 ± 5.5

Plantar flexion

20.6 ± 2.0

18.1 ± 4.3

17.8 ± 5.7

P value

0.4372

0.7664

0.8510

ATFL width (total)

Neutral position

8.6 ± 2.1

11.5 ± 2.4

13.3 ± 1.8

Plantar flexion

8.5 ± 2.5

11.7 ± 2.3

13.2 ± 1.6

P value

0.8884

0.6543

0.9403

ATFL/CFL angle

Neutral position

99.3 ± 13.5

102.2 ± 11.9

99.9 ± 10.6

Plantar flexion

104.5 ± 12.2

103.4 ± 9.4

101.8 ± 10.0

P value

0.4646

0.3893

0.7098

ATFL/ATiFL angle

Neutral position

45.3 ± 9.5

45.1 ± 10.2

50.2 ± 11.8

Plantar flexion

63.1 ± 12.8

57.8 ± 8.7

62.2 ± 13.4

P value

0.0045*

 < 0.0001*

0.0037*