Table 1 Patients’ basic information (n = 37)

Number (n)

27

10

Age (year)

7.30 ± 1.80 (4.5–12.0)

8.03 ± 2.42 (5.0–12.5)

0.084

Sex (n) male to female

22:5

4:6

0.555

BMI (kg/m²)

15.8 ± 1.20 (13.6–18.9)

16.72 ± 1.14 (14.8-18.8)

< 0.05

Type (n)

I:6; IIa:11; IIb:10; III:0

I:3; IIa:4; IIb:3; III:0

< 0.05

Side (n) left to right

15:12

4:6

–

Type of external fixator

Monorail

Multi-joint

–

Follow-up (year)

4.53 ± 1.42 (3.0–6.5)

4.87 ± 1.33 (3.0-5.8)

0.389

US (mm)

23.15 ± 5.55

23.40 ± 4.84

0.801

RAA (°)

32.30 ± 4.07

31.30 ± 5.36

0.353

CS (%)

70.37 ± 6.70

72.30 ± 4.35

0.408

MEPS

74.07 ± 3.68

74.50 ± 3.69

0.775

Elbow flexion (°)

104.26 ± 4.94

106.50 ± 4.74

0.242

Forearm pronation (°)

71.11 ± 3.76

69.00 ± 3.94

0.180

Forearm supination (°)

83.33 ± 3.67

83.00 ± 4.22

0.749