Abstract
Interface pressures and shear stresses within the socket, in standing and walking, were measured for two unilateral, male, trans‐tibial amputee subjects, during two sessions each. The ratios of equal weight‐bearing standing stresses to peak walking stresses showed regional variation, ranging from 0.24:1 for pressure over the anterior region to 1.01:1 for resultant interface shear stress over the lateral region. Interface stresses in standing were only moderate predictors of peak walking stresses. The best correlation coefficient between standing in full weight‐bearing and peak walking stress was 0.88 for pressure over the lateral region. As the amputees progressed from minimal to full weight‐bearing in standing, and then to walking, the interface stresses increased in a nonlinear fashion, consistent with the assumption that the anterior tibia provides much resistance to the bending moment in the sagittal plane during walking.
