People are getting costly stem cell injections for knee osteoarthritis. But we don’t know if they work
Dr Sam Whittle shares the latest Cochrane findings on stem cells for osteoarthritis in The Conversation today
More than 500 million people around the world live with osteoarthritis. The knee is affected more often than any other joint, with symptoms (such as pain, stiffness and reduced movement) affecting work, sleep, sport and daily activities.
Knee osteoarthritis is often thought of as thinning of the protective layer of cartilage within the joint. But we now understand it affects all the structures of the joint, including the bones, muscles and nerve endings.
While there are things that can be done to manage the symptoms of knee osteoarthritis, there is no cure, and many people experience persistent pain. As a result, an opportunity exists for as yet unproven treatments to enter the market, often before regulatory safeguards can be put in place.
Stem cell injections are one such treatment. A new review my colleagues and I published this week finds that evidence of their benefits and harms remains elusive.
