Oddly enough, I bumped into this thread doing a Google search.

Cherie, I believe you did properly attribute the scale ... to Kurtzke. Although I don't have the paper, I believe this scale (and its description) was drawn from Kurtzke's 1983 paper that Lady Express cited.

In any event, this scale is quoted in a multitude of published papers as "the Kurtzke scale" sometimes without any other attribution. Kurtzke is given credit.

Mark