Table 2 pre-operative radiographic characteristics of the 22 patients that underwent leg lengthening by Ilizarov external fixation. AP-IPA: Anterior-Posterior Inter-Physeal Angle. L-IPA: Lateral Inter-Physeal Angle. LLD: leg length discrepancy calculated in absolute (cm) and relative (%) terms, compared to the contralateral side. MPTA: Medial Proximal Tibial angle. aLDFA: anterior Lateral Distal Femoral angle. HKA: Hip-Knee-Ankle angle. MAD: Mechanical Axis Deviation is defined as the distance from the midpoint of the tibial plateau to a line connecting the midpoints of the hip and ankle joint. In varus alignment the MAD was defined as a positive value in millimeters, while in cases of valgus position, the MAD was determined as a negative value
From: Deformity progression in congenital posteromedial bowing of the tibia: a report of 44 cases
Radiographic parameter | Mean ± SD (range) |
|---|---|
AP-IPA | 6.8 ± 4.6 (0–20) |
L-IPA | 4.8 ± 3.8 (0–11) |
LLD (%) | 12.9 ± 3.0 (9–22) |
LLD (cm) | 4.6 ± 0.9 (3–6.2) |
LDTA | 83.3 ± 5.2 (72–90) |
MPTA | 82.8 ± 2.6 (80–88) |
aLDFA | 79.7 ± 2.3 (74–84) |
HKA | 4.8 ± 4.2 (0–18) |
MAD (mm) | −5.2 ± 7.0 (3 – − 24.8) |