Table 1 Parameters investigated

N

33

20

Sex, f/m

14/19

10/10

Etiology: congenital/acquired

25/8

11/9

Age at surgery, years (range)

14.7 (2–54)

12.2 (7–20)

Secondary interventions

25

14

Operated leg, right/left

15/18

13/7

Preop. LLD in mm, mean (range)

53.7 (0–170)

58.8 (0–140)

Lengthening in mm, mean (range)

59.7 (20–240)

65 (30–140)

Successful correction

26

15

Postop. LLD in mm, mean (range)

15.3 (0–77)

21.4 (0–45)

Amputations

2

2

Osteotomy type, monofocal/bifocal

13/20

8/12

Distraction period, days (range)

68.7 (24–394)

88.3 (36–361)

Fixator wearing period, days (range)

192.1 (76–456)

247.4 (111–514)

Lengthening speed, mm

1.1

0.9

Healing Index, months/cm (range)

0.39 (0.17–1.31)

0.44 (0.2–1)

Distraction Index, days/cm (range)

11.6 (5.1 –39.4)

13.2 (6–30.1)

Total Knee Score, mean (range)

85.4 (60–100)

83.9 (60–100)

Knee Function Score, mean (range)

80.4 (5–100)

78 (30–100)

Tegner Activity Score, mean (range)

3.6 (1–9)

3.4 (2–6)

UAJ/LAJ Weber score, mean (range)

9.8 (0–20)

6.7 (1–20)

Motor Score, foot

4.1

4.3

Neuropathy Sensitivity Score

1.9

1.8

Neuropathy Deficit Score

0.52

0.35