PRP vs cortisone comes down to a trade-off: cortisone delivers fast but short-lived anti-inflammatory relief, while PRP (platelet-rich plasma) works more slowly and may support longer-term joint healing. Here is how to decide which is right for your joint pain.
The short answer: Cortisone injections work fast and cheaply to calm inflammation, but the relief is temporary and repeated shots may harm cartilage over time. PRP works more slowly and costs more out-of-pocket, but a growing body of evidence suggests it can offer longer-lasting relief for certain joint and tendon problems.
If you’ve been offered an injection for knee, shoulder, hip, or tendon pain, you’ve probably run into these two options. As a pain physician, I get this question almost every week, and the honest answer is that neither one is automatically “better.” They do different jobs. Let me walk you through what each actually does, what the research says, and how to think about the trade-offs, including the part most websites skip: cost.
How Each Injection Works
Cortisone (corticosteroid) is a potent anti-inflammatory medication. Injected into a joint or around a tendon, it suppresses the local inflammatory response that drives pain and swelling. It does not heal anything; it turns down the volume on inflammation, often within a few days.
PRP (platelet-rich plasma) is made from your own blood. We draw a small sample, spin it in a centrifuge to concentrate the platelets, and inject that concentrate into the injured area. Platelets release growth factors that are thought to stimulate the body’s natural repair and modulate inflammation. The goal is biological, not just symptomatic, so the effect builds gradually over weeks rather than days.
What the Evidence Actually Shows
This is where I want to be careful, because the marketing around PRP often runs ahead of the science. Here’s the balanced picture.
Knee osteoarthritis: Multiple randomized trials and recent meta-analyses suggest that both treatments help in the short term, but PRP tends to outperform cortisone at the 6-to-12-month mark for pain and function. The evidence here has grown substantially and is moderately strong, though results still vary by study and by how the PRP is prepared. Separately, a notable randomized trial found that repeated cortisone shots every three months over two years led to greater cartilage loss than placebo, with no lasting pain advantage. That doesn’t make a single cortisone shot dangerous, but it’s a real reason to avoid relying on frequent steroid injections in an arthritic knee.
Tendon problems (like tennis elbow): Here the pattern is consistent across randomized trials. Cortisone gives better relief in the first few weeks, but PRP tends to catch up and surpass it by 6 to 12 months. Some trials, however, show no meaningful benefit from PRP at all, so the evidence is genuinely mixed and depends on the specific tendon and protocol.
Bottom line: the evidence for PRP is strongest in knee osteoarthritis, moderate-to-mixed for tendinopathy, and weaker or still emerging for many other joints. Anyone promising guaranteed results is overselling it.
Side-by-Side Comparison
- Speed of relief: Cortisone, days. PRP, several weeks.
- Durability: Cortisone, often weeks to a few months. PRP, frequently 6 to 12 months or longer when it works.
- Best-supported uses: Cortisone for short-term flare control. PRP for knee osteoarthritis and select tendinopathies.
- Mechanism: Cortisone calms inflammation. PRP aims to stimulate repair.
- Risks: Cortisone can raise blood sugar temporarily, cause a brief pain flare, thin nearby tissue, and with repeated use may accelerate cartilage loss. PRP, because it’s your own blood, has a very low risk profile; the main downsides are a temporary post-injection ache and the chance it simply doesn’t help.
- Cost: Cortisone is usually covered by insurance. PRP is typically out-of-pocket.
The Cost and Insurance Reality
I won’t sugarcoat this. Most insurers still classify PRP as investigational, so the vast majority of patients pay out-of-pocket, commonly somewhere in the range of several hundred to a couple thousand dollars per injection depending on the joint and region. HSA and FSA funds can often be used, and your consultation and imaging may still be covered even when the injection isn’t. Cortisone, by contrast, is inexpensive and usually covered. For some patients, that difference alone decides the question, and that’s a perfectly reasonable way to choose.
So Which Is Right for You?
A reasonable framework: if you need quick relief for a flare, have a tight budget, or want to try the conservative covered option first, cortisone is sensible, just not on a frequent repeating schedule in an arthritic joint. If you have knee osteoarthritis or a stubborn tendon problem, you want to avoid the cartilage concerns of repeated steroids, and you can manage the out-of-pocket cost, PRP is a legitimate, evidence-supported option worth discussing. The right choice depends on your diagnosis, your goals, and your wallet, which is exactly the conversation to have with your physician.
Frequently Asked Questions
Is PRP better than cortisone?
Not universally. Cortisone usually relieves pain faster and is cheaper, while PRP tends to last longer for conditions like knee osteoarthritis and some tendon injuries. “Better” depends on your specific condition, how quickly you need relief, and whether you can afford an out-of-pocket treatment.
How long do PRP injections last?
When PRP works, relief often lasts 6 to 12 months or longer, and some patients get a durable benefit that delays or reduces the need for further treatment. Results build gradually over several weeks rather than immediately, and not everyone responds.
Are repeated cortisone shots bad for your joints?
An occasional cortisone injection is generally safe. The concern is frequent repeated injections in an arthritic joint: a randomized trial found that steroid shots every three months over two years caused more cartilage loss than placebo. Most physicians limit how often cortisone is used in the same joint.
Does insurance cover PRP injections?
Usually not. Most insurers still consider PRP investigational, so patients typically pay out-of-pocket. However, your consultation and imaging may be covered, and HSA or FSA funds can often be applied to the cost.
If you’re considering PRP for joint or tendon pain and want a straight, no-hype assessment of whether you’re a good candidate, I offer regenerative treatments at UPC Regenerative Medicine. You can start with a 20-minute telemedicine consult to review your diagnosis, your imaging, and your options before committing to anything.
This article is general education, not medical advice. It cannot account for your individual diagnosis, history, or imaging. Please consult your own physician before making decisions about injections or any treatment for your joint pain.
Frequently asked questions about PRP vs cortisone
Is PRP better than cortisone?
For some joints PRP vs cortisone studies show PRP gives longer-lasting relief in osteoarthritis, while cortisone acts faster. The best choice depends on your diagnosis, goals, and how often you have already had steroid injections.
How long does each injection last?
Cortisone relief often lasts weeks to a few months; PRP benefits build over weeks and may last longer, though results vary.
Is PRP covered by insurance?
PRP is usually considered elective and is often not covered, whereas cortisone injections are typically covered. Confirm with your provider.
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Sources & further reading
Medically reviewed by Rainier Guiang, MD — last reviewed June 2026. This article is educational and is not a substitute for individual medical advice.