Arthrosamid® Injection – A New Era in Knee Osteoarthritis Treatment



An advanced, long-acting injection designed to transform knee osteoarthritis management. Available now at Physio On The Green.


What is Arthrosamid®?

Arthrosamid® is a non-biodegradable hydrogel injection used to treat knee osteoarthritis. Unlike traditional treatments like steroid or hyaluronic acid injections, Arthrosamid® is permanently retained within the joint and works by creating a cushioning and lubricating layer inside the knee.

It is composed of 2.5% cross-linked polyacrylamide and 97.5% water—a soft, non-toxic gel that becomes part of the joint lining. The result? Long-lasting relief from pain and stiffness without the use of steroids.


How Does It Work?

Arthrosamid® integrates with the synovial membrane inside the knee and provides three major effects:

  1. Improved Lubrication – Reduces joint friction during movement.
  2. Shock Absorption – Provides a cushion within the joint space, reducing impact.
  3. Reduced Inflammation – Alters the local inflammatory environment, improving joint homeostasis.

This makes it particularly useful for patients with moderate to severe osteoarthritis who want to avoid or delay surgery.


How Is It Different from Steroid or Hyaluronic Acid Injections?

FeatureSteroid InjectionHyaluronic AcidArthrosamid®
MechanismAnti-inflammatoryLubricantHydrogel implant
DurationWeeks to 3 months3–6 months≥12 months (often longer)
Ideal UseAcute flare-upsMild-moderate OAModerate-severe OA
Steroid-freeNoYesYes
RepeatableYesYesYes (if needed)

Clinical Evidence

Arthrosamid® is CE-marked and approved for use across Europe and the UK. In published clinical trials, more than 70% of patients reported sustained improvement in pain and function up to 2 years after a single injection.

Studies have shown:

  • Significant improvements in WOMAC scores (a validated osteoarthritis outcome measure)
  • High patient satisfaction rates
  • Reduced need for other medications or surgical consultations

“Arthrosamid® is one of the most promising injection therapies we’ve seen in the last decade. It offers a potential game-changer for those wanting to avoid surgery.”
– Lead Clinician, Physio On The Green


Who Is It For?

Arthrosamid® is suitable for:

✅ Patients with moderate to severe knee osteoarthritis
✅ Those who have not responded to traditional injections or physiotherapy
✅ Patients looking to delay knee replacement surgery
✅ Individuals wanting a longer-term solution without steroids


The Process at Physio On The Green

  1. Assessment – A comprehensive consultation with one of our Extended Scope Practitioners
  2. Diagnostic Ultrasound – To confirm inflammation, effusion, and rule out other pathologies
  3. Informed Consent – We explain all options, risks, and what to expect
  4. Ultrasound-Guided Injection – Performed with aseptic technique for precision and safety
  5. Follow-up – A structured rehab plan and monitoring of your progress

Aftercare & Recovery

  • No general anaesthetic or surgery required
  • You may experience mild soreness for 24–72 hours
  • Return to normal activities within a few days
  • Avoid high-impact exercise for 1–2 weeks

Price & Booking

  • Arthrosamid® Injection: £1,400 (includes scan, injection, and follow-up consultation)

This is a specialist service available only at selected clinics across the UK. Physio On The Green is proud to be one of the few clinics in London offering Arthrosamid® with expert clinical guidance and ultrasound precision.


Book a Consultation

Want to find out if Arthrosamid® is right for you?
📞 0207 870 0313
✉️ info@physioonthegreen.com
🔗 Book Online


Physio On The Green — Your health, our priority. World-class care with a personal touch.

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