PRP vs. Cortisone: Why One Heals and One Doesn’t

PRP vs. Cortisone: Why One Heals and One Doesn’t

When you’re dealing with joint pain, tendon injury, or chronic orthopedic pain, two injection-based options come up most often: cortisone and PRP. They’re both delivered by needle into the affected area, and they can both reduce pain — but that’s roughly where the similarity ends. Understanding the difference matters, because one of these treatments works against your body’s healing process.

What Cortisone Actually Does

Cortisone (corticosteroid) injections are synthetic drugs designed to mimic cortisol and suppress inflammation. Injected into a joint or soft tissue, they can produce rapid, significant pain relief — sometimes within days.

The problem is what’s happening underneath that relief.

Inflammation, as counterintuitive as it sounds, is your body’s primary healing mechanism. When you suppress it aggressively with cortisone, you’re not resolving the underlying injury — you’re blocking the biological process your body uses to repair it. Research has confirmed that repeated cortisone injections cause progressive cartilage degradation, tendon weakening, and accelerated tissue breakdown at the injection site. The more injections, the more damage.

This is why most physicians limit cortisone to three or four injections per site per year — not because of arbitrary policy, but because the cumulative tissue damage becomes clinically significant. And it’s why many patients find the relief window shortening with each successive injection: the underlying tissue is getting worse, not better.

What PRP Does Instead

PRP (platelet-rich plasma) works with your body’s healing biology rather than against it. A small blood draw is processed in a centrifuge to concentrate your platelets to four to five times their normal level, then injected precisely into the injured area under ultrasound guidance.

Platelets release growth factors that signal the body to increase blood flow, recruit repair cells, and begin rebuilding damaged tissue. This amplifies the same acute inflammatory response that cortisone suppresses — which is exactly the point.

The clinical data on outcomes is meaningful. Studies comparing PRP to cortisone for knee osteoarthritis have shown that at six months, cortisone patients had plateaued or regressed, while PRP patients continued to improve. Some studies show sustained pain reduction in PRP patients at two years with no regression. Unlike cortisone, PRP isn’t masking symptoms — it’s supporting structural repair.

The Practical Decision

Cortisone has a role in medicine. For short-term symptom management before a major event, or in cases where rapid inflammation control is medically necessary, it’s a reasonable tool. But as a long-term treatment strategy for orthopedic injuries and degenerative joint conditions, it’s working against the outcome you want.

PRP costs more upfront and isn’t covered by most insurance plans. But when you factor in the trajectory — repeated cortisone injections leading to progressive tissue damage, eventually requiring surgery — the calculus often shifts.

If you’re currently managing an orthopedic condition with cortisone and wondering why you keep needing more injections, that’s a conversation worth having with a regenerative medicine specialist.