If your knee osteoarthritis has got to the point where painkillers are not cutting it and physiotherapy has taken you as far as it can, two options tend to come up in the conversation: an injection or surgery.
For many patients, surgery feels like the logical next step. It is familiar. GPs refer for it. The NHS funds it. But knee replacement is a significant operation with a real recovery period, real risks, and outcomes that are not guaranteed. For a growing number of patients — particularly those in their 50s and 60s — there is now a serious alternative worth understanding before committing to the operating table.
That alternative is the Arthrosamid injection.
This article explains what Arthrosamid is, who it is suitable for, how it compares to surgery, and when it makes more sense to choose one over the other.
What Is Knee Osteoarthritis and Why Does It Progress?
Knee osteoarthritis is a degenerative joint condition. The cartilage that cushions the ends of the bones inside the knee wears down over time. As it thins, the joint loses its shock-absorbing capacity. Bone begins to rub against bone. The synovial lining — the soft tissue that produces joint fluid — becomes inflamed. Pain, stiffness, and reduced mobility follow.
It is not a condition that gets better on its own. But the rate at which it progresses varies considerably between patients. Some people manage well with conservative treatment for years. Others deteriorate faster, particularly after a certain threshold of cartilage loss.
The challenge is deciding what to do and when to do it — especially when surgery is on the table but you are not ready for it, or not convinced it is the right call yet.
What Is the Arthrosamid Injection?
Arthrosamid is a non-biodegradable hydrogel. It is made of 97.5% water and 2.5% cross-linked polyacrylamide. A clinician injects it directly into the knee joint under ultrasound guidance. Once inside, it integrates gradually with the synovial tissue — the soft lining of the knee — over a period of four to six weeks.
Unlike steroid injections, which reduce inflammation temporarily, or hyaluronic acid injections, which supplement joint fluid, Arthrosamid works by physically integrating with the joint tissue. It is non-biodegradable, which means it does not break down. Clinical studies report sustained improvements in pain and function for up to five years from a single injection.
It does not reverse osteoarthritis. Nothing currently available does that. But for the right patient, it can meaningfully reduce pain, improve mobility, and restore quality of life — without surgery.
Who Is a Good Candidate for Arthrosamid Injection?
Arthrosamid tends to work best in patients with mild to moderate knee osteoarthritis. Not very early-stage disease that is barely causing symptoms. And not bone-on-bone, end-stage arthritis where the joint has essentially collapsed.
The patients who respond best typically have:
- Persistent knee pain that has not responded adequately to physiotherapy, weight management, and pain relief
- Some cartilage remaining in the joint — confirmed on X-ray or MRI
- Symptoms that are affecting daily life — sleep, walking, stairs, leisure activities
- A preference to avoid or delay surgery, whether for personal, medical, or practical reasons
- No active knee infection and no known allergy to polyacrylamide
Age is not a defining factor. Patients in their 40s through to their 80s have been treated successfully. What matters is the clinical picture — the degree of joint damage and how the patient is experiencing it day to day.
Who Is Surgery Better Suited For?
Knee replacement surgery — total or partial — is a well-established procedure with good long-term outcomes in the right patients. It is generally more appropriate when:
- Osteoarthritis has reached an advanced stage with significant joint space narrowing or bone-on-bone contact
- Conservative treatments including injections have been tried and have failed to provide adequate relief
- The patient’s quality of life is severely compromised and non-surgical options have been exhausted
- The patient is physically fit enough to undergo surgery and manage the recovery
The important word there is exhausted. Many patients are referred for knee replacement before they have genuinely tried every non-surgical option available to them. The Arthrosamid injection is one of those options — and it is still underused.
Arthrosamid vs Knee Replacement Surgery — A Direct Comparison
| Arthrosamid Injection | Knee Replacement Surgery | |
| Procedure type | Minimally invasive injection | Major surgical operation |
| Anaesthetic | Local anaesthetic only | General or spinal anaesthetic |
| Procedure time | 30 to 45 minutes | 1 to 2 hours |
| Recovery time | Return to light activity within days | 6 to 12 weeks minimum |
| Hospital stay | None — same-day treatment | Typically 2 to 5 days |
| Results timeline | Noticeable improvement at 8 to 12 weeks | Meaningful improvement at 3 to 6 months |
| Duration of benefit | Up to 5 years from a single injection | 15 to 20 years (implant lifespan) |
| Risk profile | Low — mild swelling, small infection risk | Surgical risks including clots, infection, implant failure |
| Repeat treatment | Possible if required | Revision surgery is significantly more complex |
| NHS availability | Private only | Available on NHS |
| Cost (private) | From £2,800 (single knee) | £8,000 to £15,000+ |
The comparison is not meant to suggest that one option is always better than the other. It is meant to show that they are genuinely different tools — and that the choice should depend on where you are clinically, not simply on what gets offered first.
The Case for Trying Arthrosamid Before Surgery
There is a compelling argument for using Arthrosamid as a step before committing to knee replacement — particularly for patients in their 50s and early 60s.
Knee replacements have a lifespan. The implant typically lasts 15 to 20 years. If you have a knee replacement at 58, there is a reasonable chance you will need a revision procedure in your 70s. Revision surgery is significantly more complex than the original operation. The outcomes are generally less predictable.
If Arthrosamid can give you five years of meaningful relief — or even two or three — that is time spent without the risks of surgery, without a lengthy recovery, and without burning through your implant’s lifespan earlier than necessary.
Published data and UK provider outcomes suggest that a proportion of Arthrosamid patients who were on the pathway to surgery have successfully avoided or significantly delayed that step. That is not a guarantee. But it is a genuinely meaningful possibility for the right patient.
What Does the Arthrosamid Injection Involve at Dr SNA Clinic?
At Dr SNA Clinic, Mr S N Abbas personally performs every Arthrosamid injection. He does not delegate this procedure.
The appointment takes 30 to 45 minutes in total. Local anaesthetic is applied before the injection. Using ultrasound guidance throughout, Mr Abbas places the hydrogel precisely within the synovial cavity of the knee. Accurate placement is not a minor detail — it directly affects how the hydrogel integrates and how well it works.
After the injection, most patients walk out of the clinic without assistance and travel home independently. There is no hospital admission, no general anaesthetic, and no surgical incision.
Mr Abbas trained in NHS Trauma and Orthopaedics for six years at hospitals including Cambridge and Oxford. When he assesses your knee, he reviews it the way a surgeon would — not simply to decide whether to inject, but to determine whether Arthrosamid is genuinely the right option for your specific situation. If it is not, he will tell you so.
Arthrosamid Injection Cost — What You Pay at Dr SNA Clinic
One of the most practical questions patients ask is what the Arthrosamid injection costs. Here is the transparent pricing:
| Treatment | Price | What Is Included |
| Single knee | £2,800 | Full consultation, ultrasound-guided injection, physio guidance, supplement advice, follow-up support |
| Both knees | £5,300 | Everything above for both knees, treated in one appointment |
| Initial consultation | £100 | Fully redeemable against treatment cost if you proceed |
0% finance is available to spread the cost across several months.
When you weigh the Arthrosamid injection cost against private knee replacement surgery — which typically runs from £8,000 to £15,000 or more — the difference is significant. More importantly, if Arthrosamid successfully delays or avoids surgery, the financial case becomes even clearer.
Arthrosamid Injection London — How to Access Treatment
If you are based in London or travelling from elsewhere in the UK, Dr SNA Clinic is located at:
Dr SNA Clinic 48 Wimpole Street, Marylebone, London W1G 8SF 📞 +44 7955 836986 Monday to Saturday, 10:00–18:00
The clinic sits within the Harley Street Medical Quarter, one of the most accessible areas in central London for transport. Bond Street station is a five-minute walk. Marylebone and Euston mainline stations are within easy reach by taxi or tube. Most patients travel independently and go home the same day.
Patients come to our clinic from across the UK — Manchester, Birmingham, Edinburgh, Leeds, Bristol — as well as internationally. Many have already tried other options closer to home. The consistent reason they travel is the combination of surgical expertise, formal Arthrosamid certification, and the standard of clinical care they find here.
When Should You Book a Consultation?
The right time to explore Arthrosamid is before you reach the point where surgery becomes your only realistic option.
If you are currently managing with pain relief and physiotherapy but finding that the relief is becoming less effective — or that your symptoms are beginning to affect your sleep, your mobility, and your daily life — that is the window when Arthrosamid is most likely to help.
A face-to-face consultation with Mr Abbas is the only way to confirm whether you are suitable. He will assess your symptoms, review your imaging, and give you a straight answer about whether Arthrosamid is the right step for your knee — or whether something else would serve you better.
There is no obligation to proceed at consultation. The £100 consultation fee is fully redeemable if you go ahead with treatment.
The Bottom Line
Knee replacement surgery saves lives and restores function in patients who genuinely need it. It is not the wrong choice — it is the wrong choice at the wrong time for some patients.
If you are living with mild to moderate knee osteoarthritis, have tried conservative management, and are not yet at the stage of bone-on-bone joint destruction, Arthrosamid injection deserves serious consideration before you commit to surgery.
It is minimally invasive. The recovery is measured in days, not months. The clinical evidence supports sustained benefit for up to five years. And for a growing number of patients, it has made surgery either unnecessary or something that can wait years longer than it would have otherwise.
That is worth knowing — and worth discussing with the right clinician before you make a decision you cannot reverse.
To book your consultation with Mr S N Abbas at Dr SNA Clinic, call +44 7955 836986 or visit us at 48 Wimpole Street, Marylebone, London W1G 8SF.
