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Where do stem cells come from for therapy is a common question because the source can affect how a treatment is discussed and why a clinic may recommend one option over another. In regenerative medicine, stem cells used in orthopedic care are usually collected from a patient’s own body or from donated birth tissue. Common sources include bone marrow, adipose tissue, and umbilical cord tissue. Each source has different collection methods, cell characteristics, and practical considerations. For knee pain research, it is also important to know that regenerative injection therapy is investigational per FDA, so it should be presented as an educational option, not a guaranteed solution. If you are comparing choices for knee pain in Florida, understanding the source is a useful first step before you decide whether to schedule a consultation or a screening.

Direct Answer

Where do stem cells come from for therapy?

Stem cells for therapy can come from a few main sources. In orthopedic regenerative care, the most common are bone marrow, adipose tissue, and umbilical cord tissue. Bone marrow stem cells are usually taken from the pelvis. Adipose stem cells come from fat tissue, often collected through a minor procedure. Umbilical cord stem cells come from donated birth tissue that is screened and processed by a lab. The source matters because it affects how the sample is obtained and how it is prepared.

Context

Why do clinics discuss bone marrow, fat, and cord sources differently?

Clinics discuss stem cell sources differently because each source has different practical tradeoffs. Bone marrow stem cells are often considered for orthopedic uses because the collection is familiar in medicine. Adipose stem cells may be discussed when a larger tissue volume is wanted. Umbilical cord stem cells are not taken from your own body, so they are handled differently and depend on donor screening and processing. A good discussion should focus on source, safety, and whether the approach fits your history.

Evidence

What does the evidence say about stem cell therapy for knees?

The evidence base is still developing. A Cochrane 2025 systematic review evaluated 25 trials with 1,341 participants and found that regenerative injection evidence remains limited and uncertain for knee osteoarthritis. That is why this type of care is treated as investigational rather than a proven cure. FDA guidance also matters here, because clinics should not imply guaranteed outcomes. You should ask how a provider explains the evidence, risks, and realistic goals before any treatment decision.

Cost

How much does stem cell therapy cost for a knee?

Cost is a major practical issue because regenerative injection therapy is often not covered by insurance. A common self-pay range is $3,000 to $8,000 per knee, depending on the source, the procedure, and what is included in the visit. If you are comparing options, ask whether the price covers evaluation, imaging review, injection procedure, follow-up visits, and any lab processing. Clear pricing helps you compare care more responsibly.

Next Step

What should you do next if you are considering treatment?

If you are comparing stem cell sources for knee pain, start with an evaluation that explains whether your symptoms fit regenerative care, physical therapy, or another approach. At Revive by MWS in Leesburg, you can ask about a free knee screening to review your history and discuss next steps. The clinic is located at 920 E Dixie Ave Suite A, Leesburg, FL 34748, and the phone number is (352) 559-1901.

Key Facts

Key Facts to Remember

Stem cells for therapy commonly come from bone marrow, adipose tissue, or donated umbilical cord tissue, and each source is collected and processed differently.
A Cochrane 2025 systematic review included 25 trials and 1,341 participants, showing that evidence for regenerative knee injections remains limited and uncertain.
Florida arthritis prevalence is 24% of adults, about 5.2M people, which makes knee pain education especially relevant for many patients in the state.
Florida has a 65+ population of 21.8% and is the 5th oldest state, so joint health and mobility concerns are common discussion points.
US TKR volume is 800,000+ annually per AHRQ HCUP, so many people compare regenerative options before deciding on surgery or other treatment paths.

Book Your Free Knee Screening

The free knee screening is available to a limited number of qualifying patients each month at Revive by MWS, 920 E Dixie Ave Suite A, Leesburg, FL 34748. Includes imaging review, physical exam, and a clear conversation about whether regenerative therapy fits your case.

FAQs

Common Questions

Are stem cells for therapy taken from your own body?+

Sometimes. Bone marrow stem cells and adipose stem cells are commonly taken from your own body. Umbilical cord stem cells come from donated birth tissue instead. The source changes how the material is collected, processed, and discussed in clinic.

What is the most common stem cell source for knee therapy?+

Bone marrow and adipose tissue are the most commonly discussed sources in orthopedic regenerative care. The choice depends on the clinic’s protocol, your anatomy, and the reason for treatment. A consultation should explain why one source is being considered over another.

Are umbilical cord stem cells the same as fetal cells?+

No. Umbilical cord stem cells come from donated birth tissue after delivery, not from a developing fetus. They are screened and processed under specific protocols. You should ask how the tissue is sourced, handled, and documented before considering any treatment.

Is stem cell therapy approved by the FDA for knee arthritis?+

Regenerative injection therapy for knee arthritis is generally considered investigational. That means it should be discussed as an educational and emerging option, not a proven standard treatment. You should be cautious about any claim that suggests guaranteed outcomes or a cure.

How do I know whether stem cell therapy is worth considering?+

It may be worth discussing if you want to explore non-surgical options for knee pain and understand the source, cost, and evidence first. A screening can help you compare this approach with physical therapy, medications, or surgery based on your goals.

RM
About Revive by MWS
The Revive by MWS Medical Team
Revive by MWS is a regenerative medicine practice located at 920 E Dixie Ave Suite A, Leesburg, FL 34748, serving Central Florida adults evaluating stem cell therapy, PRP, and exosome-based injections as alternatives to knee replacement surgery. All procedures are administered by licensed Florida medical providers.
Last updated July 2026 · Reviewed by Revive by MWS · 920 E Dixie Ave Suite A, Leesburg, FL 34748 · (352) 559-1901
Sources

Sources

American Academy of Orthopaedic Surgeons, “Arthritis of the Knee,” OrthoInfo, accessed July 2026.
American Academy of Orthopaedic Surgeons, “Orthobiologics (Regenerative Medicine) FAQ,” OrthoInfo, accessed July 2026.
Whittle SL, et al., “Stem cell injections for osteoarthritis of the knee,” Cochrane Database of Systematic Reviews, 2025.
Arthritis Foundation, “2023 Florida State Fact Sheet,” based on CDC BRFSS surveillance, accessed July 2026.

Education only. Not medical advice. Regenerative injections for knee osteoarthritis are not FDA-approved and are considered investigational. Individual results vary. Consult a licensed medical provider about your specific case.