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Table 1 Correlations between peak rearfoot and forefoot motion in the frontal plane and peak knee adduction moments (KAM) and knee adduction angular impulse (KAAI)

From: Relationship between foot function and medial knee joint loading in people with medial compartment knee osteoarthritis

  1stpeak KAM 2ndpeak KAM KAAI
Parameters rvalue pvalue rvalue pvalue rvalue pvalue
Tibia relative to laboratory
 Lateral tilt 0.60* < 0.001 0.67* 0.001 0.82* < 0.001
 Internal Rotation 0.27 0.13 0.17 0.34 0.19 0.28
 External Rotation 0.14 0.44 0.19 0.29 0.14 0.43
Rearfoot relative to the tibia
 Peak eversion −0.12 0.48 0.25 0.16 0.07 0.69
 Peak inversion −0.08 0.63 0.10 0.56 0.03 0.85
 Internal Rotation −0.02 0.89 0.43* 0.01 0.29 0.10
 External Rotation −0.22 0.20 0.28 0.10 0.07 0.67
Rearfoot relative to laboratory
 Peak eversion 0.21 0.24 0.59* < 0.001 0.50* 0.004
 Peak inversion 0.07 0.69 0.33 0.06 0.33 0.05
 Internal Rotation −0.18 0.30 −0.44* 0.01 −0.38* 0.02
 External Rotation −0.22 0.20 −0.54* 0.001 −0.48* 0.005
Forefoot relative to rearfoot
 Peak eversion −0.26 0.13 −0.53* 0.002 −0.51* 0.003
 Peak inversion −0.28 0.11 −0.54* 0.001 −0.48* 0.005
 Abduction 0.18 0.30 0.14 0.42 0.13 0.47
 Adduction 0.19 0.28 0.13 0.47 0.14 0.42
  1. Note: A positive correlation indicates increased peak rearfoot eversion and decreased rearfoot inversion is associated with decreased adduction moments. A negative correlation indicates reduced rearfoot internal rotation and increased external rotation relative to the laboratory is associated with greater 2nd peak KAM and KAAI.
  2. * significant at p < 0.05.