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In the article by Kantor and Margolis,¹ high correlation coefficients are reported comparing wound size estimates using width, length, length x width, an ellipse model, and computer-aided planimetry. However, since measures of association are used instead of a measure of agreement, high correlation coefficients are to be expected.²

Unfortunately, leg ulcers are almost never rectangular. Occasionally, they are round or oval, but very often they are irregularly shaped or even multilocular, in which cases the types of measurements proposed are meaningless. Instead, I would recommend simple point counting for estimating the area of wounds or ulcers.³ This method, using a square lattice grid on a transparent foil, yields remarkably accurate results regardless of the shape of the area to be measured (Figure 1).⁴ Since point counting is so simple and cheap, and its precision is comparable to that of computer-aided planimetry,⁴ it is ideally suited for the daily . . . [Full Text of this Article]