Knee Cartilage
Demo Author One
Cartilage repair options for lasting joint health
A practical overview of cartilage repair, injection therapy, rehabilitation planning, and the clinical evidence that guides joint preservation care.
Regenerative injections compared
Mytocel MSK vs Stem Cell Injections
“Stem cell injection” is a loose umbrella term. Here is what it usually means, how Mytocel MSK compares, and why we are careful with the words.
Reviewed byProfessor Paul Lee MBBch, FRCS (Tr & Orth), PhDCartilage and joint preservation expertiseQuick answer
“Stem cell injection” is a loose umbrella, not one single treatment. In practice it usually means BMAC (cells concentrated from your bone marrow) or mFat (from your fat). Mytocel MSK micrografts also carry your own progenitor and repair cells, but we are careful with terminology: they are your own tissue prepared into micrografts, not isolated, laboratory-cultured stem cells. All of these are autologous and given in a single session with no laboratory culture. Which suits you depends on the joint and the tissue source. Fat or marrow options are from £5,800; Mytocel MSK is from £3,000.
Every option here is autologous and offered at London Cartilage Clinic. We would rather be plain about the words than oversell: Mytocel MSK micrografts contain your own repair cells, but they are not marketed as isolated stem cells.
“Stem cell” injections vs Mytocel MSK at a glance
| What to compare | “Stem cell” injections | Mytocel MSK |
|---|---|---|
| What the term means | A loose umbrella, usually BMAC from bone marrow or mFat from fat | A specific technique: your own tissue prepared into living micrografts |
| Source tissue | Bone marrow (BMAC) or fat (mFat), depending on the method | A small sample of your own tissue |
| What it delivers | Cells concentrated from marrow or fat, with their surrounding components | Micrografts carrying your own progenitor and repair cells and their matrix |
| Terminology | Often described as “stem cells”, though the exact cell mix varies | Described honestly as micrografts, not isolated cultured stem cells |
| Laboratory culture | None | None |
| Sessions | One | One |
| Autologous (your own tissue) | Yes | Yes |
| Available at London Cartilage Clinic | Yes, from £5,800 | Yes, from £3,000 |
Every option here is offered at London Cartilage Clinic; this is a genuine choice, not a takedown of any of them.
When a “stem cell” injection may suit
- Your surgeon judges bone-marrow (BMAC) or fat-derived (mFat) cells are the right source for your joint.
- A larger volume of marrow or fat-derived cells is wanted for the area.
- You have discussed exactly what the injection contains and are comfortable with the source.
- The plan calls for a marrow or fat sample, from £5,800.
When Mytocel MSK is the better choice
- You want a single-session micrograft prepared chair-side from a small tissue sample.
- Your joint wear is earlier, where a lighter-touch micrograft approach fits.
- You value plain terminology: your own tissue as micrografts, honestly described, from £3,000.
- You are considering NanoACi, where the Mytocel MSK micrografts are the cell component.
“Stem cell injection” gets used as a catch-all, and that can muddy an honest conversation. Under the umbrella sit different treatments, most often BMAC (cells concentrated from your own bone marrow) and mFat (from your own fat). Mytocel MSK belongs in the same family in that it uses your own cells, and the micrografts do carry your progenitor and repair cells. But Professor Lee is careful with the words: Mytocel MSK is your own tissue prepared into micrografts, not isolated, laboratory-cultured stem cells, and we will not market it as something it is not. All of these are autologous and single-session, with nothing grown in a laboratory. Which one suits you comes down to the joint and the tissue source, decided on examination and imaging.
Frequently Asked Questions
Is Mytocel MSK a stem cell injection?
Not in the way that phrase is usually meant. Mytocel MSK micrografts do carry your own progenitor and repair cells, but they are your own tissue prepared into micrografts, not isolated, laboratory-cultured stem cells. Professor Lee is deliberately careful with the terminology rather than marketing it as something it is not.
What do “stem cell injections” usually contain?
“Stem cell injection” is a loose umbrella. In practice it most often means BMAC (cells concentrated from your own bone marrow) or mFat (regenerative cells from your own fat). The exact mix of cells varies with the method, which is why it helps to ask precisely what any injection contains.
Are stem cell injections and Mytocel MSK made from my own body?
Yes. BMAC, mFat and Mytocel MSK are all autologous, prepared from your own bone marrow, fat or tissue and given in a single session with no laboratory culture. None uses donor material. Mytocel MSK is made by Remedi on their Regenera Activa micrografting system.
Why are you careful about the words “stem cells”?
Because honesty matters more than a marketing label. Mytocel MSK contains your own repair cells, but calling it an isolated stem cell therapy would overstate what it is. It is your own tissue prepared into micrografts, and we would rather say that plainly than oversell it.
How much do stem cell injections and Mytocel MSK cost?
Fat or marrow-derived options are from £5,800, and Mytocel MSK is from £3,000. Your exact plan and cost are confirmed at consultation, once Professor Lee has reviewed your imaging and discussed what each injection contains. See the Mytocel MSK page.
Still have more specific concerns?
Free Discovery CallOptions that our doctors may discuss include NanoACi, ChondroFiller, Mytocel MSK, joint replacement, established conservative care or surgery, depending on examination and imaging.
Confused by “stem cell” claims? Let us be straight with you.
The fairest next step is a review of your imaging and an honest conversation about what each injection contains. Start with a free discovery call, or book a consultation with Professor Lee.
London Cartilage Clinic
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