I broke my leg two years ago, and it still hasn’t healed. My orthopedist says it’s because of my age (I’m 77) and the fact that I have to take steroids for my arthritis. I haven’t time to hobble about. Anything new out there?

Yes and no. Low-frequency ultrasound has been around for decades, so it’s not new. However, new evidence shows that treating a problem fracture like yours with ultrasound for 20 minutes a day can improve healing by up to 90%. Talk to your doctor to see whether ultrasound could be used to help your leg.