Figure 1.
(a) Category 0: no abnormalities detected. (b) Category 1: hyperkeratosis, moderate hypertrophy of the plantar skin. (c) Category 2: high-grade hyperkeratosis with adhesive dirt. (d) Category 3: superficial lesions, epithelial necrosis. (e) Category 4: profound lesions of the plantar skin (also see Table 1).