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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.