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