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Table 2 Results of linear correlation analysis between the variables

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

  r value* P value
ΔmTFA and sagittal plane rotation of the knee
 Overall cohort (N = 180) 0.368 < 0.001
 Knee flexion group (N = 109) 0.399 < 0.001
 Knee extension group (N = 71) −0.139 n.s.
 Knee internal rotation group (N = 90) 0.644 < 0.001
 Knee external rotation group (N = 90) 0.210 0.047
ΔmTFA and axial plane rotation of the knee
 Overall cohort (N = 180) 0.018 n.s.
 Knee flexion group (N = 109) 0.075 n.s.
 Knee extension group (N = 71) −0.111 n.s.
 Knee internal rotation group (N = 90) 0.075 n.s.
 Knee external rotation group (N = 90) −0.011 n.s.
Sagittal plane rotation and axial plane rotation of the knee
 Overall cohort (N = 180) −0.015 n.s.
 Knee flexion group (N = 109) −0.036 n.s.
 Knee extension group (N = 71) 0.059 n.s.
 Knee internal rotation group (N = 90) 0.027 n.s.
 Knee external rotation group (N = 90) −0.05 n.s.
  1. *The correlation coefficient
  2. †The analyses were based on absolute value
  3. ΔmTFA, absolute value of delta mechanical tibio-femoral angle