Skip to main content

Table 1 Parameters investigated

From: Deformity correction and extremity lengthening in the lower leg: comparison of clinical outcomes with two external surgical procedures

  TSF IRF
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
  1. IRF Ilizarov ring fixator, LAJ lower ankle joint, LLD leg length discrepancy, TSF Taylor Spatial Frame, UAJ upper ankle joint