Does stem cell therapy help to treat osteoarthritis?

Question

Hello, Doctor,

My father is 70 years old and has severe osteoarthritis in his knees. He has had steroid injections and physical therapy, but he still struggles with walking and basic daily activities. We found a local clinic offering stem-cell therapy and platelet-rich plasma injections, saying it could regenerate cartilage and delay or avoid surgery. It sounds hopeful, but we are also cautious because it is really expensive and not covered by insurance.

Is there solid evidence that this works in elderly people?
What kind of stem cells are typically used?
Are there risks or side effects?

We just want to make an informed decision for him.

Please suggest.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

You are being incredibly thoughtful and protective of your father, and with good reason. Stem cell and platelet-rich plasma (PRP) therapies sound promising, especially when conventional treatments have not worked. But it is crucial to weigh realistic expectations, scientific evidence, and financial costs, especially for someone who is 70 years old with advanced osteoarthritis.

Let us break it all down clearly:

What are these therapies?

Platelet-rich plasma (PRP): Made from your father’s blood. Concentrated platelets are injected into the joint. Platelets release growth factors that may reduce inflammation and support tissue repair.
Stem cell therapy: Usually uses mesenchymal stem cells (MSCs) from bone marrow (most common in clinics), fat tissue (adipose-derived), and sometimes amniotic fluid (less regulated, often not true stem cells).

Does it work? What does science say?

For PRP: Studies suggest modest pain relief and improved function in people with mild to moderate arthritis. Results are less consistent in severe osteoarthritis, like your father's, effects can last six to 12 months, but usually will not rebuild cartilage.
For stem cells: No solid clinical evidence that stem cells regenerate cartilage in humans, especially in severe cases. It may reduce inflammation and pain temporarily. Some patients report feeling better, but the placebo effect may also play a role.

Neither therapy is considered a replacement for knee replacement in severe arthritis.

What about age?

At age 70, your father's natural stem cells are less active. That means bone marrow-derived stem cells may not be as potent. Older patients typically see less benefit from regenerative therapies.

Risks and side effects:

PRP: Generally safe (uses his blood). Minor side effects like swelling and discomfort. Rare infection risk.
Stem cell injections: Infection and unregulated treatments can be dangerous (for example, contaminated products, false claims).

Should you try it?

Consider PRP only if you understand it is likely not to regrow cartilage. The goal is short-term pain relief. You are fine with spending out-of-pocket for a possible temporary benefit.

Be extremely cautious about stem cell therapy if the clinic makes bold claims like cartilage “regeneration”. They do not specify exactly which cells they use and how they are processed. It costs a lot and is not backed by peer-reviewed evidence.

Better long-term alternatives?

If your father’s arthritis is severe and limiting his daily life, he may be a strong candidate for knee replacement, especially if:

Conservative options have failed.
He wants lasting mobility improvement.
He is reasonably healthy for surgery.

Modern joint replacements are very safe, even in people over 70 years old, and offer long-term relief.

I hope this has helped you.

Please feel free to reach out to me again if you have further queries.

Thank you.