Introduction
Arthrosamid is an innovative injectable treatment for people living with knee osteoarthritis. This polyacrylamide hydrogel works by supporting the lining of your knee joint, helping to ease pain and improve movement. It is often considered as an alternative to surgery when other treatments have stopped working.

Research confirms that “Polyacrylamide (PAAG) hydrogel is a novel compound recently introduced to the UK under the name Arthrosamid for osteoarthritis” (Cole et al., 2022). Another study adds that, “There are few effective osteoarthritis (OA) therapies. This injectable hydrogel has shown both efficacy and safety” (Bliddal et al., 2024).

This guide will take you step-by-step through the entire process—from your first enquiry to the injection procedure and aftercare—explaining why Arthrosamid cannot be bought or used without professional supervision. We’ll also show you what to expect at each stage, helping you feel confident and informed.

Booking Your Consultation

To begin your Arthrosamid journey, you’ll need to contact a specialist orthopaedic or musculoskeletal (MSK) clinic. Most clinics have easy ways to enquire online or over the phone. Be ready to explain your symptoms and share any previous scans or diagnoses, if you have them.

Some clinics will ask for a referral from your GP, while others allow self-referral—so do check in advance.

Consultation fees typically range from around £100 to £200. Some clinics may ask for a deposit or payment upfront to secure your appointment. Having a professional assessment first is essential—not only to meet legal requirements but also to ensure your safety, as online purchases or self-injections are unsafe and not permitted.

Assessing Suitability

During your consultation, the clinician will take a detailed look at your knee symptoms and medical history. They’ll examine your knee and review any prior scans such as MRIs or X-rays. You should expect questions about your pain levels, how the knee affects your daily life, and any treatments you’ve tried so far.

Arthrosamid is usually recommended for people with moderate knee osteoarthritis. Some patients may not be suitable if their condition is too mild, too advanced, or if there are other factors involved.

You might be asked to have additional scans before a final decision is made. Your practitioner will then explain your options clearly, including the benefits and risks of Arthrosamid compared to other treatments.

Rest assured, this treatment has a strong safety record: “Injection of PAAG hydrogel into the knee has been shown to be safe with no long-lasting adverse effects” (Cole et al., 2022).

What Happens on the Day of Treatment

On treatment day, you’ll be advised on simple preparations—usually wear loose, comfortable clothing so the knee can be easily accessed. It’s also sensible to arrange for someone to drive you home, just in case.

At the clinic, you’ll undergo checks to confirm you are fit for the injection. The skin around your knee will be cleaned, and a local anaesthetic used to numb the area.

The injection itself is guided by ultrasound to place the gel accurately inside your knee joint. One large study described the process as an “ultrasound-guided, intra-articular injection of 6 ml iPAAG” (Bliddal et al., 2024). The whole procedure takes just a few minutes.

You may feel some pressure or mild discomfort during and shortly after the injection. Most appointments last between 30 to 60 minutes including preparation and aftercare. Before leaving, you’ll receive clear advice on caring for your knee in the hours and days following treatment.

Aftercare and Follow-Up

It’s normal to experience some soreness or swelling around the injection site for a few days. Keep an eye on your symptoms, and contact the clinic if you experience severe pain, swelling, fever, or anything unusual.

You might be asked to limit strenuous activity for a short time, but most people can return to their normal daily routines within one to two weeks.

Follow-up visits will be scheduled to check your progress, sometimes in person and sometimes remotely. Occasionally, you may need repeat scans to assess how well the treatment is working. This ongoing clinical oversight is vital for your safety.

The benefits can last well over a year. A recent study found a “significant reduction in WOMAC pain scores at 52 weeks with similar improvements in stiffness, function, and patient global assessment” (Bliddal et al., 2024). Even more impressive, “62.2% of patients were responders after 52 weeks” (Bliddal et al., 2024).

Looking further ahead, three-year results show that “single injections of 6 ml iPAAG remain well tolerated with clear, statistically significant improvements” (Bliddal et al., 2023). Early studies also confirm effectiveness at one and two years (Cole et al., 2022).

Remember, Arthrosamid must always be administered and supervised by qualified healthcare professionals. DIY use is unsafe and unlawful.

Choosing a Reputable Clinic and Practitioner

Choosing a trustworthy clinic is key. Ensure the clinic is registered with the Care Quality Commission (CQC) and that experienced, qualified practitioners administer the treatment.

When you make initial contact, ask about their experience with Arthrosamid, what outcomes patients typically achieve, and the kind of aftercare and support they offer.

Beware of any offers to buy Arthrosamid products online for home use—it’s illegal and unsafe.

Conclusion

The Arthrosamid treatment pathway is clear and carefully designed to keep you safe and maximise results. It centres on expert assessment, thorough suitability checks, skilled injection techniques, and thoughtful follow-up care.

To sum up, this hydrogel treatment “seems to be an efficacious and safe option providing positive results for at least two years” (Cole et al., 2022). Another study confirms “persistent benefits and safety at 52 weeks” (Bliddal et al., 2024), with further evidence showing effective and safe symptom relief after three years (Bliddal et al., 2023).

By following this process and choosing reputable providers, you can confidently access this innovative treatment in the UK. Expert care will give you the best chance of easing your knee pain and improving your quality of life.

References

• Cole, A., Maulana, R. K., Whitehead, J. P., & Lee, P. Y. F. (2022). A systematic review of the novel compound Arthrosamid polyacrylamide (PAAG) hydrogel for treatment of knee osteoarthritis. Medical Research Archives, 10(8). https://doi.org/10.18103/mra.v10i8.2950
• Bliddal, H., Beier, J., Hartkopp, A., Conaghan, P. G., & Henriksen, M. (2024). Effectiveness and safety of polyacrylamide hydrogel injection for knee osteoarthritis: results from a 12-month follow up of an open-label study. Journal of Orthopaedic Surgery and Research, 19(1). https://doi.org/10.1186/s13018-024-04756-2
• Bliddal, H., Beier, J., Hartkopp, A., Conaghan, P. G., & Henriksen, M. (2023). Polyacrylamide hydrogel for the treatment of knee osteoarthritis: 3-year follow up results of a prospective clinical study (AB1185). Annals of the Rheumatic Diseases. https://doi.org/10.1136/annrheumdis-2023-eular.6038