| Treatment | Type | Best For | Speed of Relief | Duration | Main Advantage | Main Limitation |
|---|---|---|---|---|---|---|
| Cortisone (Steroid) | Anti-inflammatory injection | Acute flare-ups, swollen/inflamed knee | Very fast (1–3 days) | 4–12 weeks | Strong, quick pain relief | Short-term; repeated use may affect cartilage |
| Hyaluronic Acid | Lubricating gel (viscosupplement) | Mild–moderate OA with stiffness | Medium | 6–9 months | Improves lubrication & mobility | Not effective in advanced OA |
| PRP (Platelet-Rich Plasma) | Biological (own blood) | Early–moderate OA, younger patients | Slower | 6–12 months | May help reduce pain and improve function | Variable results; higher cost |
| Arthrosamid | Synthetic hydrogel | Mild–moderate OA seeking longer relief | Medium | Up to 3 years* | Long-lasting, single injection | Higher upfront cost |
| Kiomedine | Bio-fermented chitosan derivative | Mild–moderate OA | Medium | 6–12 months | Protective + anti-inflammatory effect | Newer treatment; limited long-term data |
Knee osteoarthritis injections are selected based on the stage of cartilage degeneration, symptom severity, and the patient’s functional goals. While cortisone is often used for rapid relief during inflammatory flare-ups, other options such as hyaluronic acid, PRP, Arthrosamid, or chitosan-based injections may provide longer-lasting symptom improvement in suitable patients. Clinical practice patterns can vary between countries, and these treatments are increasingly discussed in orthopedic clinics internationally, including in Turkey, where patients may explore different non-surgical knee osteoarthritis management strategies. Proper evaluation by an orthopedic specialist is essential to determine which injection type is appropriate and whether it should be combined with physiotherapy, weight management, or other supportive treatments.
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