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Table 1 Baseline radiographic parameters of the subjects

From: The effect of knee joint rotation in the sagittal and axial plane on the measurement accuracy of coronal alignment of the lower limb

Baseline radiographic parameter

value*

mTFA (°)

 On FLWAP radiograph

1.2 ± 3.9

 On EOS image

2.1 ± 4.1

ΔmTFA (°)

1.7 ± 2.0

Sagittal plane rotation (Knee flex/ext. Angle, °)

 Overall cohort (N = 180)

5.3 ± 5.3

 Knee flexion group (N = 109)

6.0 ± 6.3

 Knee extension group (N = 71)

−4.4 ± 3.2

Axial plane rotation (Patellar rotation, %)

 Overall cohort (N = 180)

4.6 ± 4.0

 Knee internal rotation group (N = 90)

4.1 ± 3.5

 Knee external rotation group (N = 90)

−5.1 ± 4.4

  1. *The values are given as means and standard deviations
  2. †The values are analyzed and presented based on absolute value
  3. mTFA mechanical tibio-femoral angle; FLWAP full-length weight-bearing anteroposterior; ΔmTFA absolute value of delta mechanical tibio-femoral angle; flex/ext. Flexion/Extension