
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.

Cells or scaffold
Mytocel MSK brings your own repair cells; ChondroFiller brings a scaffold for them to build on. Here is why they do different jobs, and why they are combined inside NanoACi.
Reviewed byProfessor Paul Lee MBBch, FRCS (Tr & Orth), PhDCartilage and joint preservation expertiseMytocel MSK is your own cells, prepared into living micrografts, while ChondroFiller is a collagen scaffold with no cells of its own. They do different jobs: the cells rebuild, the scaffold gives them somewhere to build. That is precisely why Professor Lee combines both, alongside PRF, inside NanoACi. Both start from about £3,000.
This is not one against the other. Both are genuine options at London Cartilage Clinic, and the fuller NanoACi protocol brings them together on purpose.
| What to compare | ChondroFiller | Mytocel MSK |
|---|---|---|
| What it is | A collagen scaffold, a matrix with no cells of its own | Living micrografts made from your own cells |
| What it does | Gives your own cells a structure to settle on and rebuild from | Delivers your own repair cells into the joint to support natural repair |
| Does it contain cells | No, it is the scaffold on its own | Yes, your own cells, prepared chair-side |
| Best suited to | Giving repair a matrix to build on, on its own or as part of a fuller protocol | Earlier cartilage wear, where your own cells can be put to work |
| Where the two meet | Combined inside NanoACi as the scaffold | Combined inside NanoACi as the cell component |
| Surgery | No, an injection | No, an injection |
| Cost at the clinic | From £3,000 | From £3,000 |
Both are offered at London Cartilage Clinic; this is a genuine choice, and often the answer is to use both together.
And when both together make sense, that is NanoACi. Professor Lee takes the same Mytocel MSK micrografts (the cells), a ChondroFiller scaffold (the structure) and PRF from your own blood (the growth signals), and delivers all three in one session. The cells alone suit earlier wear; the scaffold alone gives repair a matrix; the fuller NanoACi protocol brings them together for a single, more complete step. Because we offer each of them, the consultation is a genuine question of what your joint needs, not a sales pitch for one.


Mytocel MSK delivers your own cells, prepared chair-side into living micrografts and injected into the joint to support natural repair. ChondroFiller is a collagen scaffold, a structure with no cells of its own that gives repair a matrix to build on. One brings the cells, the other brings the scaffold, so they are answering two different questions rather than competing for the same one.
No. Mytocel MSK supplies living cells; ChondroFiller supplies the scaffold those cells can settle on. Because they do different jobs, they are often more useful together than apart, which is exactly why Professor Lee brings them together inside NanoACi.
Cells build better when they have somewhere to build. In NanoACi, Professor Lee delivers the Mytocel MSK micrografts (the cells) together with a ChondroFiller scaffold and PRF from your own blood, in one session. NanoACi is a technique he performs, not a product, and it puts the cell component and the scaffold to work side by side.
They start from a similar place. Mytocel MSK is from £3,000, the same across joints, and ChondroFiller is from £3,000. The fuller NanoACi protocol, which combines both alongside PRF, sits above either component on its own. Your consultation confirms which approach fits your joint and what it involves.
That is settled on examination and imaging, not from symptoms alone. For earlier wear, the cells alone as Mytocel MSK may be enough. Where a scaffold adds value, ChondroFiller or the fuller NanoACi protocol may suit you better. See Mytocel MSK vs NanoACi for how the component and the full protocol compare.
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.
The fairest next step is a review of your imaging. Start with a free discovery call, or book a consultation with Professor Lee, who will set out whether Mytocel MSK, ChondroFiller or the fuller NanoACi protocol fits your joint.
London Cartilage Clinic
Clinical updates, cartilage treatment guidance, and recovery-focused articles from our specialist team.

A practical overview of cartilage repair, injection therapy, rehabilitation planning, and the clinical evidence that guides joint preservation care.

A practical overview of cartilage repair, injection therapy, rehabilitation planning, and the clinical evidence that guides joint preservation care.

A practical overview of cartilage repair, injection therapy, rehabilitation planning, and the clinical evidence that guides joint preservation care.