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Thermograms of volunteers with BMI < 25 kg/m2. Three main characteristics are shown: (1) symmetry, i.e., the temperature distribution on the right feet is almost the mirror image of those of the left feet. (2) The medial longitudinal arch is the hotter part of the plantar skin for both women and men. (3) The temperature decreases distally from the medial longitudinal arch to the periphery.
