Arthrosamid® for Knee Osteoarthritis (OA)
Arthrosamid® is a permanent injectable hydrogel implant that delivers long-lasting, proven pain relief without surgery r...
Arthrosamid® for Knee Osteoarthritis (OA)
Arthrosamid® is a permanent injectable hydrogel implant that delivers long-lasting, proven pain relief without surgery redefining treatment for knee Osteoarthritis (OA).
17,000+
Patients Treated
Long-lasting relief up to
5 Years
73%
positive response rate

What is an Arthrosamid® Injection?
Arthrosamid® is a non-surgical, injectable treatment specifically developed for people suffering from knee osteoarthritis (OA). Unlike traditional treatments that often rely on repeated medications or invasive surgery, Arthrosamid® offers a long-lasting solution through a single injection.
At the core, Arthrosamid® is a permanent hydrogel implant. This hydrogel is made up of 97.5% water and 2.5% cross-linked polyacrylamide, designed to integrate safely into the soft tissue of the knee. Once injected into the intra-articular space of the knee joint, it cushions and lubricates the joint, providing relief from pain, inflammation, and stiffness associated with osteoarthritis.
Who is Arthrosamid® suitable for?
- Suitable for patients with mild to moderate knee osteoarthritis
- Experiencing persistent knee pain, stiffness or swelling
- Seeking a non-surgical treatment with long-lasting relief
- Have had limited success with other treatments (e.g. steroid or hyaluronic acid injections)
- Looking to postpone or avoid knee replacement surgery
How Does Arthrosamid® InjectionWork?
After a single injection, Arthrosamid® forms a durable, gel-like cushion within the knee joint.
This cushion helps:
- Reduce pain and swelling
- Improve joint function and mobility
- Delay or avoid the need for surgery
The hydrogel also interacts with the synovial membrane (the lining of the joint), modifying the joint environment in a way that promotes long-term relief rather than short-term symptom suppression.

Key Benefits of Arthrosamid for Knee Pain
One-time injection
Minimally invasive
Long-lasting pain relief
20 years of research & global clinical evidence
What is Knee Osteoarthritis (OA)?
- A chronic long-term condition affecting the knee joints.
- Cartilage wears away, causing bones to rub together.
- Leads to joint stiffness, swelling, and pain.
- Progressively worsens, causing synovial pain and disability.
What Happens After Treatment?
You can leave the clinic right after finishing the treatment.
You may feel:
- Mild discomfort as anaesthetic effect wears off
- Mild pain or swelling
- General sensation may feel different
You can continue taking your regular medication and pain killers.
Contact your consultant incase you experience any of the following symptoms:
- Redness
- Heat
- Severe swelling
Pain relief may begin within 24 hours, with most patients noticing improvement in a few weeks and maximum benefit reached between 4 to 12 weeks.
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