Arthrosamid vs Hyaluronic Acid
Both are intra-articular injections for knee osteoarthritis, but they work in different ways and last very different lengths of time.
At a glance
| Criterion | Arthrosamid | Hyaluronic acid |
|---|---|---|
| Type | Polyacrylamide hydrogel — non-absorbable | Viscosupplement — absorbed over months |
| Number of injections | Single | 1–5 depending on product |
| Duration of effect | Sustained; 3-year data show continued benefit | 6–12 months typically |
| Best candidates | Moderate-to-severe knee OA, including those failing HA | Mild-to-moderate knee OA |
| Cost | Higher — one-off | Lower — may need repeats |
| Regulatory status | CE-marked, UK available | Long established |
When Arthrosamid is preferred
- You want a one-off long-lasting option
- Hyaluronic acid has given only short-lived benefit
- You are trying to defer knee replacement
When Hyaluronic acid is preferred
- Early osteoarthritis
- You prefer a more established, lower-cost first-line option
Bottom line
Hyaluronic acid remains a solid first-line viscosupplement. Arthrosamid is a single-injection alternative with longer durability, particularly valuable when HA has stopped working.
Frequently asked questions
Can I have Arthrosamid after hyaluronic acid?
Yes. Many patients move to Arthrosamid when hyaluronic acid no longer gives adequate relief.
Related treatments
Not sure which is right for you?
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