Figure 4

The four insole conditions. Bottom view (i to iv) and superior view (v) of the insole conditions: (i) baseline; (ii) pre-plug removal; (iii) post-plug removal (the plugs were removed under the MT2-3 region in this example); and (iv) post-plug removal plus arch support. The superior view of post-plug removal plus arch support condition (v) shows an arch support stuck to the EVA layer. Because all patients had no current ulcer in the experiment, the PORON® plug layer (blue color) was put facedown.