The other day, I was speaking with a woman in her sixties. "I love traveling, you know. But lately, my knees hurt, and I can't walk for very long." She smiled as she said this, but then continued: "Even getting into a car is a struggle, and standing up from a chair is a real ordeal. There are places I want to go and people I want to see, though." Hearing those words made me realize something. Knee pain isn't just a
