Fig. 4

Typical plantar pressure findings of pincer nail cases (a) and healthy walkers (b). Representative cases are shown. The first toe nail of the pincer nail case (4a, lefthand image) shows significantly greater inward curvature than the first toe nail of the control case (4b, lefthand image). The plantar pressures are indicated by a color gradient that ranges from red (very high pressure) to dark blue (very low pressure). The pressure on the first toe in the pincer nail case is much lower than the pressure on the first toe in the control case regardless of whether the feet were bare (lefthand foot in panels a and b) or shod (righthand foot in panels a and b)