"Thank you Dr. Mathias Bostrom and HSS! With my two new knees five months post-surgery, this 70 year old is walking, hiking, and biking with no pain and very little effort."

"I was an ardent yoga practitioner for many years and avid hiker until black ice brought me down. Not in an ashram or on a mountain but right on Fifth Avenue and 13th St. I realized what had happened -- a broken kneecap -- and that I couldn’t get up. I once thought I would never cross the street without crutches again, but now I’m back on the mountain!"