Is PRP better than cortisone or hyaluronic acid (gel) shots for knee arthritis?

An umbrella meta-analysis published in 2026 found that intra-articular PRP was consistently more effective than hyaluronic acid or placebo for pain in knee osteoarthritis, with a favorable safety profile. A separate 2026 randomized trial in late-stage knee osteoarthritis reported that PRP outperformed corticosteroids and NSAIDs, with more favorable inflammatory biomarker changes.

The evidence is not unanimous about who benefits most, which is why patient selection matters. Results appear strongest for certain stages of arthritis and certain preparation protocols, and outcomes vary person to person. The honest framing: PRP is a reasonable, well-studied option for many people, not a guarantee for everyone.

Cortisone is a fast-acting anti-inflammatory that can calm a flare quickly, but repeated steroid injections may weaken cartilage and tendons over time, and the relief often does not last long. Hyaluronic acid, sometimes called a gel shot, aims to improve joint lubrication, with mixed trial results. PRP uses growth factors from your own blood and is generally considered a longer-lasting regenerative option, though it works over weeks rather than hours.

• Cortisone: fast relief for flares, shorter duration, caution with repeated use
• Hyaluronic acid: lubrication approach with mixed evidence, few risks
• PRP: your own growth factors, results build over weeks, often compared favorably in 2026 reviews

There is no universal answer. A young athlete with an acutely inflamed knee may be a candidate for a different plan than someone with advanced arthritis weighing options before surgery. The useful first step is imaging and a careful history, then an honest conversation about what each injection can and cannot do for your specific knee. At Aloha Stem Cell, PRP is one of the most-studied treatments we offer, and we will tell you plainly whether it fits.