Another Study Strengthens Case for PRP in Treating Knee Osteoarthritis

A multi-center randomized clinical trial adds to the evidence that PRP injections can help relieve knee osteoarthritis symptoms in selected patients, with signals that it may slow disease progression.

Knee osteoarthritis (KOA) affects millions globally, leading to pain and reduced mobility. A recent multi-center, randomized clinical trial adds to the evidence that platelet-rich plasma (PRP) injections can help reduce these symptoms in appropriately selected patients, with some indication that it may slow the progression of the disease.

What is PRP?

Platelet-rich plasma (PRP) is a treatment derived from a patient’s own blood. It is concentrated with platelets rich in growth factors, which can potentially accelerate the healing of injured or degenerated tissues, including knee joints affected by osteoarthritis.

Key Findings from the Study

• Pain and function: Patients receiving PRP showed significant improvements in knee function and pain reduction compared to sham saline injections, sustained for up to 60 months post-treatment.
• Slower cartilage decline: PRP treatment was associated with a slower decline in knee cartilage volume, suggesting it may help preserve the joint.
• Lower inflammation: PRP recipients had lower levels of inflammatory markers in their joints.
• Safety: PRP demonstrated a safety profile comparable to saline injections.

Why Consider PRP for Knee Osteoarthritis?

• Durable relief in some patients: In this trial, improvements in pain and joint function were sustained over long-term follow-up, though results vary from person to person.
• Non-surgical option: With minimal invasiveness and a good safety record, PRP may be worth weighing alongside other options before considering knee surgery.
• Uses your own blood: Because PRP is made from the patient’s own blood, the risk of allergic reaction or rejection is very low.

Conclusion

This study adds to a growing body of evidence supporting PRP as a reasonable non-surgical option for knee osteoarthritis pain, with the possibility of slowing progression in some patients. Its biggest contribution is relieving pain and improving function, and it tends to help most in earlier-to-moderate arthritis rather than advanced, bone-on-bone joints — so it is worth weighing where you are in that picture. If you’re exploring your options, the best next step is an initial visit to review your exam and imaging and discuss whether PRP is a sensible fit for your knee.