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Table 1 The influence of limb alignment on the normal stress (relative to body weight) and strain for the medial (top) and the lateral (bottom) cartilage of the tibia and femur during the gait cycle

From: Mechanical contributors to sex differences in idiopathic knee osteoarthritis

  Medial Cartilage Normal Stress Medial Cartilage Normal Strain
Subject Tibia Femur Tibia Femur
1 (varus) 0.020 0.023 18.66 26.66
2 (normal) 0.017 0.020 17.01 20.67
3 (valgus) 0.016 0.018 14.99 16.16
  Lateral Cartilage Normal Stress Lateral Cartilage Normal Strain
Subject Tibia Femur Tibia Femur
1 (varus) 0.001 0.003 4.64 6.79
2 (normal) 0.003 0.004 8.06 11.41
3 (valgus) 0.008 0.010 9.22 11.38
  1. The data were obtained at 25% of the stance phase when both the axial load and the varus knee moment were at peak values. The results showed the magnitude of the stresses and strains in the medial compartment increased with varus alignment, whereas the magnitude of the stresses and strains in the lateral compartment increased with valgus alignment [61].