Knee Osteoarthritis Treatment Decision
Who Is Suitable
for Arthrosamid®?
Arthrosamid® is not right for every osteoarthritis patient. Use this page as a guide before booking; the final decision is made at consultation with Professor Paul YF Lee after imaging and clinical assessment.
Reviewed byProfessor Paul YF Lee MBBch, FRCS (Tr & Orth), PhDCartilage and joint preservation expertiseQuick Answer
Arthrosamid® may be suitable for adults with diagnosed knee osteoarthritis who have ongoing symptoms despite appropriate conservative treatment and who understand the limits of non-surgical symptom management. Active infection, product contraindications or a clinical picture better served by surgery may rule it out. A clinical assessment with imaging review is essential before any decision.
Assessment Considerations
Good candidates may include
Diagnosed knee osteoarthritis
A clinical diagnosis supported by recent imaging (X-ray or MRI). The diagnosis matters because Arthrosamid® is licensed and evidence-based specifically for osteoarthritis, not general knee pain.
Stage and pattern of wear
Stage is considered alongside symptoms, alignment, stability and function. The observational evidence does not turn a wear grade into an individual response prediction.
Symptoms despite conservative treatment
You have tried activity modification, physiotherapy and simple pain relief, and symptoms continue to limit daily activity. Arthrosamid® is generally not a first-line option.
Has considered surgical and non-surgical alternatives
Arthrosamid may be discussed as symptom management, but it has not been proved to delay knee replacement. Significant pain, deformity or loss of function may make surgical assessment more appropriate.
Realistic expectations
Understanding that Arthrosamid® is intended for symptom management, not as a cure or cartilage-regeneration treatment. The observational cohort reports group outcomes through 24 months, not a guaranteed response or duration.
Willing to accept the safety protocol
Comfortable with our conservative protocol including ultrasound-guidance, IV antibiotic cover and the six-week follow-up. Skipping safety steps to save cost is not an option we offer.
Where Caution Is Needed
Patients who may need caution
These are not absolute contraindications, but they warrant a careful conversation before treatment. In many of these situations we recommend an alternative pathway.
Advanced bone-on-bone arthritis
End-stage osteoarthritis where the joint surface has been substantially lost. Arthrosamid® may give some relief but the underlying disease may progress to needing knee replacement.
Active infection
Any active infection, in the joint or systemically, is a reason to defer Arthrosamid®. We treat the infection first.
Poorly controlled diabetes
Raised HbA1c increases infection risk for any joint injection. We may ask you to optimise control before scheduling.
Immunosuppression or high infection risk
Patients on immunosuppressive therapy or with conditions that raise systemic infection risk warrant a tailored discussion.
Unrealistic expectations
Patients who expect Arthrosamid® to cure their arthritis, regenerate cartilage or guarantee permanent relief are not good candidates — the treatment cannot deliver any of those things.
Unwillingness to accept the protocol
A clinic-specific safety protocol that includes IV antibiotics, sterile technique and six-week follow-up is non-negotiable at London Cartilage Clinic. Patients who decline these steps should consider a different provider.
Pre-Treatment Assessment
What we check before recommending Arthrosamid®
Imaging review
Recent X-ray and (where available) MRI of the affected joint. We are looking at the stage of disease, the pattern of wear and any features that change the recommendation.
Conservative-treatment history
What you have tried, what worked, what did not. Arthrosamid® is not a first-line treatment; it sits after physiotherapy, activity modification and simple analgesia.
Comorbidity and medication review
Diabetes control, immunosuppression, anticoagulation, recent infection. Any of these can change the safety profile.
Symptom pattern
What hurts, when, and what limits you. Some patterns of pain respond well to Arthrosamid®; others suggest a different treatment is the better answer.
Your goals and expectations
What you want from treatment, what would count as a good outcome, and over what timeframe. We will not offer Arthrosamid® where expectations cannot be matched to what the treatment can do.
Advanced Disease
Bone-on-bone arthritis and advanced osteoarthritis
Arthrosamid® is unlikely to help in end-stage, bone-on-bone disease. Where the joint surface has been substantially lost, a cushioning hydrogel cannot restore what is no longer there. Some patients still get partial relief, but the durability is shorter and the underlying disease may progress regardless.
In these cases, the better answer is often a knee replacement conversation. We will say so honestly. Read more on the forthcoming Arthrosamid® vs knee replacement comparison.
Where the disease is moderate but advancing, Arthrosamid® may still be appropriate as a symptom-management option. It is not proved to delay surgery. Imaging and clinical assessment help decide whether an injection or replacement opinion is the more appropriate discussion.
Eight Questions, Three Minutes
Take the Arthrosamid® suitability self-assessment
This short questionnaire organises relevant questions before assessment. It does not diagnose osteoarthritis, apply group evidence as an individual prediction or confirm suitability. Use it to prepare for a clinical conversation.
Suitability for Arthrosamid®
Frequently asked questions
Who is the ideal candidate for Arthrosamid®?
The ideal candidate is an adult with a clinical and imaging diagnosis of knee osteoarthritis, ongoing symptoms despite appropriate conservative treatment, realistic expectations and no contraindication. Current imaging, stage, alternatives and willingness to accept the product-specific safety protocol all form part of the decision.
Can I have Arthrosamid® if I have bone-on-bone arthritis?
That description does not predict whether Arthrosamid will work. Advanced disease, deformity, instability or major functional loss should prompt a balanced knee-replacement assessment. We review imaging and the clinical picture rather than using one label alone.
Can I have Arthrosamid® if I have diabetes?
Well-controlled diabetes is not a contraindication, but poorly controlled diabetes raises the infection risk for any joint injection. We will review HbA1c and recent control as part of the assessment, and may ask you to optimise control before scheduling treatment.
Can I have Arthrosamid® if I am on blood thinners?
Treatment may be possible, but the decision depends on the medicine, why it was prescribed and your bleeding and clotting risks. Do not stop it yourself. We review this at consultation and may ask the prescribing clinician to advise on peri-procedure management.
What if my suitability self-assessment score is borderline?
A borderline score on the Arthrosamid® suitability self-assessment is one of the reasons we offer a free discovery call before committing to a consultation. The questionnaire is a decision-support tool, not a final answer; the consultation is where the clinical decision is made.
Will you tell me honestly if I am not a good candidate?
Yes. We do not recommend Arthrosamid® where the indication is absent, a contraindication is present or another treatment is more appropriate. See the Arthrosamid® safety page for the broader picture.
Book an Arthrosamid® Assessment – London
Long-lasting relief starts with the right decision — not just an injection.