Change the surface

Regenerates

Mytocel MSK

Your own cartilage cells, prepared during the appointment and injected back into the joint. One session, nothing synthetic, nothing grown in a laboratory.

From
£3,000To confirm
How long it lasts
Builds over months from one session
What is left behind
Your own tissue
Two knee joints side by side: one contained round cartilage defect on the left, wear spread across the whole surface on the right
Mytocel MSK is most often used where wear is still early, on the left of this picture rather than the right.

Where it sits

Mytocel MSK sits in the change the surface half of what we offer.

Works on the cartilage itself, aiming to rebuild or support it. Across the spectrum of wear, it may be considered from early wear to diffuse wear.

Healthy
Early wear
Diffuse wear
Bone on bone

Best suited to earlier wear on its own. For more advanced wear it is used inside a fuller approach rather than by itself.

What it is

What it is

Mytocel MSK is an autologous micrograft injection. Autologous simply means it comes from you.

A small sample of your own cartilage is taken under local anaesthetic and processed at the chairside using the Regenera Activa micrografting system, which breaks it into tiny living micrografts rich in progenitor cells and their own natural matrix. Those micrografts are injected into the affected joint in the same appointment, which takes around thirty minutes in total.

Nothing is cultured in a laboratory, nothing is sent away, and nothing synthetic is introduced. You leave with your own tissue working inside the joint.

What it aims to do

What it does

  • Delivers your own progenitor cells into the joint
  • Aims to support the joint surface biologically rather than cushion it mechanically
  • Completed in a single appointment, with no laboratory stage

What it does not do

  • It does not regrow a joint that has lost its cartilage entirely
  • It does not give instant pain relief, because it works over months
  • On its own, it is not the right answer for advanced wear

Who it may suit

Who may be considered

  • Earlier cartilage wear, where there is still cartilage to work with
  • Soft-tissue problems around the joint as well as the surface itself
  • The knee, and the thumb base, where it is used for rhizarthrosis
  • People who would rather use their own tissue than a synthetic material

None of this replaces an assessment. Suitability is confirmed on examination and imaging, never from a web page.

When another fits better

When something else is the better answer

ChondroFiller Injection

For more advanced wear, or wear spread across the whole surface, a collagen scaffold covers more ground. This is the usual recommendation when the joint is past the early stage.

Arthrosamid

If what you actually want is reliable pain relief rather than biological repair, cushioning the joint may serve you better.

An assessment first

Imaging matters here. If your scan shows more damage than your symptoms suggest, the recommendation may well change.

The procedure

How it is done

  1. 01

    Assessment and imaging

    Examination and imaging confirm there is enough cartilage remaining for this approach to make sense.

  2. 02

    Taking the sample

    A small cartilage sample is taken under local anaesthetic. You are awake and comfortable throughout.

  3. 03

    Chairside preparation

    The sample is processed into micrografts in the room, during your appointment. Nothing leaves the clinic.

  4. 04

    The injection

    The micrografts are injected into the affected joint under image guidance, in the same visit.

Antibiotic cover is provided before treatment as part of the clinic infection-prevention protocol, alongside sterile technique.

Recovery

Recovery and what to expect

Most people return to light daily activity the same day. The whole appointment takes about thirty minutes.

Gentle activity and physiotherapy are encouraged over the following weeks. This is a biological process, so the change builds over months rather than arriving in days.

Mild joint inflammation in the first 24 to 48 hours is not unusual. Rest the joint for the first week, then build back gradually.

An adult gardening comfortably on a spring afternoon

Risks

Risks and side effects

  • Discomfort at the site the sample was taken from
  • Mild joint inflammation in the first 24 to 48 hours
  • Infection, which is rare but serious, and the reason for sterile technique and antibiotic cover
  • A slower response than injections that work mechanically
  • No benefit at all in a proportion of people

Evidence

What the evidence shows

The micrografting technology behind Mytocel MSK has peer-reviewed published data in knee cartilage problems, including a three-year follow-up study reporting increased cartilage thickness on MRI after a single application.

Limitations

Study populations are small and follow-up periods are relatively short by orthopaedic standards. Some of the available data is preliminary or presented at conference rather than peer-reviewed, and we label it as such. This is an emerging evidence base rather than a settled one.

Peer reviewedJournal of Clinical Medicine. 2021;10(2):322.

Cartilage Micrografts as a Novel Non-Invasive and Non-Arthroscopic Autograft Procedure for Knee Chondropathy: Three-Year Follow-Up Study

Marcarelli M, Zappia M, Rissolio L, Baroni C, Astarita C, Trovato L, Graziano A.

A single application of autologous cartilage micrografts improved quality of life and increased cartilage thickness on MRI three years later.

View the published study
Peer reviewedBioengineering. 2023;10(11):1294.

Prospective Observational Study of a Non-Arthroscopic Autologous Cartilage Micrografting Technology for Knee Osteoarthritis

Tsoukas D, Muntean I, Simos C, Sabido-Vera R.

One intra-articular injection of auricular cartilage micrografts improved pain and function in early-to-moderate knee osteoarthritis.

View the published study

Price

What it costs, and where

Included

£3,000To confirm

  • Consultation
  • Tissue sample and preparation
  • Image-guided delivery

Charged separately: imaging

Available at

  • SleafordTo confirm

    London Road, Silk Willoughby, Sleaford, NG34 8NY

See all clinics

Compare

How it compares with the other three

Descriptive, not a ranking. Each of these does a different job.

Manage the symptoms

Hyaluronic acid

What it does
Lubricates
Main purpose
Lubrication and symptom relief
Pattern of wear
early wear to diffuse wear
How long it lasts
Around six months
What is left behind
Absorbed by the body
Joints
Knee, Hip, Shoulder
Important limitation
The usual first step, and the shortest acting of the four.
From
£600To confirm

Manage the symptoms

Arthrosamid®

What it does
Cushions
Main purpose
Longer-term symptom management
Pattern of wear
early wear to bone on bone
How long it lasts
Several years from one injection
What is left behind
Stays in the joint, not absorbed
Joints
Knee
Important limitation
Acting early suits it well. At bone on bone it eases pain but changes nothing structurally.
From
£2,400To confirm

Change the surface

Mytocel MSK

What it does
Regenerates
Main purpose
Autologous regenerative pathway
Pattern of wear
early wear to diffuse wear
How long it lasts
Builds over months from one session
What is left behind
Your own tissue
Joints
Knee, Thumb base
Important limitation
Best suited to earlier wear on its own. For more advanced wear it is used inside a fuller approach rather than by itself.
From
£3,000To confirm

Change the surface

ChondroFiller Injection®

What it does
Rebuilds
Main purpose
Collagen scaffold across worn surfaces
Pattern of wear
early wear to bone on bone
How long it lasts
Builds over six to twelve months
What is left behind
Resorbs, leaving your own tissue
Joints
Knee, Hip, Shoulder, Ankle, Elbow, Hand, Wrist
Important limitation
The widest range of the four. At bone on bone it is usually combined with another treatment, or weighed against replacement.
From
£3,500To confirm

This comparison describes what each treatment is for. It is not a ranking, and it cannot tell you which one suits your joint. That is decided at assessment, on examination and imaging.

Questions

Common questions

Is this stem cell treatment?
It is not cultured stem cell therapy. Your own tissue is processed mechanically at the chairside into micrografts and used the same day. Nothing is grown or expanded in a laboratory.
How long does the appointment take?
Around thirty minutes from sample to injection, in one visit.
When will I notice a difference?
This works over months, not days. It is not the right choice if you need relief quickly.
Why is it not recommended for a very worn joint?
It works with the cartilage you still have. Where very little remains, a scaffold approach such as ChondroFiller Injection generally makes more sense, and we will say so.

Other treatments

Find out whether Mytocel MSK fits your joint.

An assessment looks at the joint, the imaging and what you want back, then tells you honestly which of the four fits, or whether none of them does.

Reviewed by the AMSK clinical teamReviewer to name · Last reviewed 27 July 2026

This page is general information and does not replace an individual clinical assessment. Individual outcomes vary.

Medical review requiredWhich joints AMSK offers Mytocel MSK in, and where the cartilage sample is taken from, both need confirming before publication.