Stem Cell Therapy for Arthritis: Emerging Evidence for Osteoarthritis
Stem cell therapy for arthritis is being studied for osteoarthritis, but it is investigational and not FDA-approved for this use. Here is what the evidence does
What Arthritis Is — and Why Treatment Options Matter
If you are searching for stem cell therapy for arthritis , chances are you have been living with joint pain, stiffness, or swelling for a long time.
Arthritis is not one disease.
It is a family of more than 100 conditions, and the two you will hear about most are osteoarthritis (the gradual wear and remodeling of joint cartilage and surrounding tissue) and rheumatoid arthritis (an autoimmune condition in which the immune system attacks the joint lining).
How Stem Cell Therapy Is Supposed to Work in a Joint
Stem cells are cells that can divide and, under certain conditions, develop into other cell types.
The cells most often discussed for joints are mesenchymal stromal cells (often called MSCs), which can be collected from bone marrow, fat tissue, or other sources.
Researchers have two main ideas about how they might help an arthritic joint.
Is Stem Cell Therapy for Arthritis FDA-Approved?
This is the single most important question, so here is the plain answer: no.
Stem cell injections for osteoarthritis or any other form of arthritis are investigational and are not FDA-approved for these uses.
The stem cell treatments the FDA has approved are limited primarily to blood-forming (hematopoietic) stem cell transplants for certain blood and immune system conditions.
What the Evidence Actually Shows for Osteoarthritis
The research on cell-based injections for knee osteoarthritis is real and growing.
Several small and mid-sized clinical trials, and systematic reviews that pool them, suggest that some participants report reduced pain and improved function after MSC injections compared with baseline or with comparison treatments.
At the same time, reviewers repeatedly note important limitations.
Stem Cells vs. PRP vs. Exosomes for Arthritis
People often lump these together, but they are different.
Platelet-rich plasma (PRP) is made from your own blood and concentrates platelets and growth factors.
It has the larger body of knee osteoarthritis research of the three, although studies still vary in preparation and quality.
You can read our breakdown in PRP therapy explained: what platelet-rich plasma can and can't do .
Who Might Be a Candidate — and Who Probably Isn't
Only a physician who has examined you, reviewed your imaging, and understood your history can say whether any regenerative option is appropriate.
In general, researchers have studied people with mild-to-moderate knee osteoarthritis more than any other group.
Several situations call for extra caution or a different approach: