New numbers show that one out of 12 adults over the age of 25 will have a knee replacement sometime during their lifetime. “I have some arthritis in that knee, osteoarthritis, and I wanted to avoid at all costs another knee replacement,” shared Perez. “It set off this revolution worldwide of getting stem cells from fat,” Jason Dragoo, MD an orthopedic surgeon at UCHealth, Denver. And now, he’s using those stem cells to ease his patients’ knee pain. And we looked at the fat pad and it contains a very high number of stem cells,” illustrated Dr. Dragoo.