Table 1 Patient demographics and baseline clinical characteristics

(n = 34)

(n = 38)

Sex

1.000^a

 Male

10

11

 Female

24

27

Side with lesion

0.815^a

 Left

14

17

 Right

20

21

Age (years)

Operation time (min)

94.7 ± 32.3

80.8 ± 21.7

0.030^b*

Injury to fixation (days)

1.2 ± 0.6

1.4 ± 1.7

0.453^b

Hospitalization duration (days)

4.4 ± 2.0

4.0 ± 1.8

0.432^b

Energy of trauma

1.000^a

 High

21

23

 Low

13

15

Body mass index (BMI)

26.1 ± 4.0

24.6 ± 2.7

0.086^b

Fracture type

 Unimalleolar

12

 Bimalleolar

18

 Trimalleolar

9

8

2/34

4/38

0.677^a

8/34

5/38

0.359^a

6/34

4/38

0.501^a

3/34

3/38

1.000^a

Osteoporosis

24/34

27/38

1.000^a

Initial OA grade [24]

0.306^a

 0

0

0

 1

26

24

 2

8

14

 3

0

0

 4

0

0

Initial talus tilt angle (TTA)

1.000^a

 ≥ 2°

2

3

 < 2°

32

35

Initial distal fibula length (mm)

27.4 ± 3.4

27.3 ± 2.8

0.973^b

Reduction accuracy [2]

1.000^a

 Good

31

35

 Fair

3

3

 Poor

0

0