Press for iWalk

Five years ago, on a muggy August morning in Hicksville, N.Y., Ann Kornhauser was out walking her golden retriever when bones in her left foot suddenly cracked. Ms. Kornhauser, then in her late 50s, soon learned why: doctors discovered a rare tumor in her foot. They amputated half of it.

“In hindsight, losing my foot was one of the better things that happened to me. It turned out to provide me with a weird, hidden opportunity.”