Single injection · Non-steroidal · No GP referral needed
Arthrosamid is a single injection of a non-steroidal hydrogel used to relieve pain from knee osteoarthritis. Unlike steroid or hyaluronic acid injections, it is not broken down by the body. It becomes part of the joint lining and cushions the knee, and one treatment is designed to give long-lasting relief. At Premier Private GP it is given at our CQC-registered clinic in Bagshot, using ultrasound guidance where needed. Consultation from £120; your Arthrosamid treatment price is confirmed at consultation.
Arthrosamid is a CE-marked, non-steroidal injectable hydrogel used to treat the pain and stiffness of knee osteoarthritis. The gel is made of 97.5% water and 2.5% polyacrylamide, and it is given as a single injection into the knee joint.
In a published study of 49 people with knee osteoarthritis (opens in a new tab), pain scores were significantly lower 12 months after a single injection.
Rather than being absorbed like a steroid, the hydrogel becomes part of the synovium, the soft lining of the joint. This creates a cushioning effect that can ease pain and improve movement.
Because the gel is not broken down by the body, its effect is designed to last much longer than steroid or hyaluronic acid injections. Results vary from person to person, and your clinician will explain what to expect for your knee.
Arthrosamid is for adults with diagnosed knee osteoarthritis. It may suit you if you:
It is not suitable for everyone. For example, it is not used if you have an infection in or around the knee, or a knee replacement in that joint. Your clinician will check whether it is right for you at your consultation.
Three common knee injections for osteoarthritis, and how they differ.
| Feature | Arthrosamid | Cortisone (steroid) | Hyaluronic acid |
|---|---|---|---|
| Type | Non-steroidal hydrogel | Steroid | Lubricating gel |
| Number of injections | Usually one | Can be repeated | Sometimes a course |
| Broken down by the body? | No | Yes | Yes |
| Typical aim | Long-lasting relief | Short to medium-term relief | Short to medium-term relief |
| Treatment price at Premier Private GP | Confirmed at consultation | £250 | £350 |
Every treatment starts with a Pain Clinic Consultation from £120.
At Premier Private GP, treatment starts with a Pain Clinic Consultation from £120. Your Arthrosamid treatment price is confirmed at that consultation, once the clinician has checked that it is suitable for you.
We always confirm the full cost before anything goes ahead.
Pain Clinic Consultation: assessment of your knee and a check that Arthrosamid is suitable.
Your Arthrosamid treatment price, agreed with you before the injection.
Ultrasound shows the inside of the knee on a screen during the injection, so the gel can be placed accurately in the joint. We use ultrasound guidance where needed, and your clinician will explain how your injection will be given.
Read more about our ultrasound-guided injections.
A Pain Clinic Consultation to assess your knee and check that Arthrosamid is suitable. Your treatment price is confirmed.
A single injection into the knee joint at our Bagshot clinic, using ultrasound guidance where needed. It is usually a short appointment.
You receive aftercare advice. Your clinician will explain what to expect and any guidance on activity.
Book a Pain Clinic Consultation from £120. No GP referral needed, and appointments are usually available within days.
At Premier Private GP, treatment starts with a Pain Clinic Consultation from £120. Your Arthrosamid treatment price is confirmed at that consultation, once the clinician has checked that it is suitable for you.
It is designed to give long-lasting relief from a single injection, because the gel is not broken down by the body. Results vary from person to person, and your clinician will explain what to expect.
It is a single injection into the knee joint. Most people find it tolerable, and any discomfort is usually brief.
Availability on the NHS is limited, and it is mainly offered privately.
Usually just one. Unlike steroid injections, it is not normally repeated.
As with any joint injection, you may have temporary pain, swelling or stiffness in the knee, and there is a small risk of infection. Your clinician will go through the risks with you before treatment.
No. You can book a Pain Clinic Consultation directly, and appointments are usually available within days.
Dr Muddassar Ahmed is the founder and lead clinician at Premier Private GP. He reviews our health guides to make sure they are accurate, clear and up to date.
Injections are given by experienced specialist injection practitioners, working under our CQC-registered clinic.
This page is for general information and does not replace advice from a clinician. Results vary from person to person, and suitability is confirmed at your consultation.
