PRP vs Alternative Therapies
Platelet-rich plasma (PRP) differs from traditional injection therapies by targeting the underlying biology of joint degeneration rather than providing temporary symptom relief. While corticosteroid injections reduce inflammation and viscosupplementation improves joint lubrication, both are generally short-term solutions. PRP utilizes the body’s own growth factors to support tissue healing and may offer longer-lasting improvement in appropriately selected patients.
Hyaluronic acid injections improve joint lubrication but do not stimulate tissue healing. PRP injections provide growth factors that may influence cartilage biology and inflammation.
Clinical Evidence
Clinical trials comparing PRP and hyaluronic acid injections have shown superior pain and functional outcomes with PRP in many patients with knee osteoarthritis.
A systematic review of randomized trials involving 575 patients found that three PRP injections produced significantly better pain relief at 12 months compared with a single injection.
Insurance Coverage Update
As of January 1, many commercial insurance carriers have stopped approving hyaluronic acid injections for knee osteoarthritis, classifying viscosupplementation as a low‑value treatment. Patients are increasingly exploring orthobiologic therapies such as PRP as alternatives.
Corticosteroid injections reduce inflammation and pain but do not stimulate tissue healing. PRP injections deliver concentrated growth factors that may stimulate biologic repair processes.
Key Differences
Cortisone:
- Rapid short‑term pain relief
- Anti‑inflammatory medication
- Does not stimulate tissue repair
- Repeated injections may negatively affect cartilage
PRP:
- Orthobiologic therapy derived from a patient’s own blood
- Stimulates biologic repair pathways
- Potential longer‑lasting improvement in pain and function
- Supports joint preservation
Clinical Evidence
Randomized controlled trials comparing PRP and corticosteroids for knee osteoarthritis show that corticosteroids often provide faster early relief, while PRP demonstrates superior outcomes at longer follow‑up intervals (6–12 months).
