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Table 2.

Summary depicting pre-operative and post-operative radiographic criteria and measurements for children with infantile Blount's Disease.


Langenskiold Classification ≤2
Langenskiold Classification ≥3

Preoperative Measurement (Degrees) Mean ± SD Mean ± SD p
Drenan Angle 17.5 ± 4.4 20.2 ± 6.2 0.32
Mechanical Axis 20.2 ± 3.2 17.8 ± 11.4 0.65
Lateral Distal Femoral Angle 12 ± 10.4 1.6 ± 1.8 0.045



Final Follow-up (Degrees)
Drenan Angle −0.3 ± 6.9 2 ± 3.2 0.48
Mechanical Axis −3.9 ± 10.5 1.6 ± 7.8 0.31
Lateral Distal Femoral Angle −1.9 ± 4.8 19.6 ± 34.5 0.052



Correction over Treatment Course (Degrees)
Drenan Angle 17.8 ± 8.2 11.8 ± 8.5 0.92
Mechanical Axis 24.1 ± 16.5 11.8 ± 8.5 0.13

* Bold font indicates statistical significance p < 0.05.