PRP vs. Cortisone: Which Is Right for Your Joint Pain?

If you have joint pain, someone has probably offered you a cortisone shot. Maybe you have already had one. It worked, sort of, for a while. Then the pain came back, and now you are reading about PRP and trying to figure out which one makes sense for you.

I will be straight with you about where I land, because I do this every day. I rarely reach for cortisone. It quiets pain fast and then fades, and the research now suggests that repeated use can degrade the cartilage you are trying to protect, and may even nudge a joint toward replacement. PRP works slower and is designed to support healing, and for most people it is the better long-term choice for pain, for function, and for the health of the joint itself.

Cortisone still has a narrow, legitimate role, and I will show you exactly where. But for the majority of patients who walk into my office, it is not my first move, and by the end of this you will understand why.

The Quick Verdict

For most people, I recommend PRP. If your goal is lasting relief and protecting the joint over the coming years, PRP is built for that. The research supports it for pain, for function, and for cartilage quality, and it carries none of the cartilage concerns that come with repeated steroid shots.

Cortisone has one clear place in my practice. I reserve it for severe, end-stage joint pain that has not responded to anything else, in a patient who is already headed for a knee replacement and just needs short-term relief to bridge the gap to surgery. When the joint is already going under the knife, fast and temporary is exactly the right job, and the long-term cartilage concern no longer changes the plan.

For nearly everyone else, trading a few weeks of quick relief for potential harm to the cartilage is a poor deal. So let me walk you through what each injection does and what the research actually shows.

PRP vs. Cortisone at a Glance

Factor	Cortisone (Corticosteroid)	PRP (Platelet-Rich Plasma)
What it is	A synthetic anti-inflammatory steroid	Concentrated platelets from your own blood
Main goal	Suppress inflammation, quiet pain	Support your body’s tissue repair
How fast it works	Days	Weeks, building over about 6 to 12 weeks
How long it lasts	Weeks to about 3 months	6 to 12 months, sometimes longer
Effect on cartilage	Repeated use linked to greater cartilage loss and faster progression	Linked to improved cartilage quality versus cortisone
Long-term pain and function	Similar to PRP only at short term	Superior at mid- and long-term follow-up
Repeat injections	Each tends to help less; risk adds up	Evaluated case by case, no set package
Source	An off-the-shelf drug	Your own biology
Best fit	Short-term bridge before a planned joint replacement	Most patients wanting durable, joint-protective results
Insurance	Usually covered	Usually cash-pay

These describe general patterns, not a promise about your specific joint. Here is what sits underneath them.

Cortisone: Fast Relief, With a Cost to the Joint

Cortisone is a corticosteroid, a powerful anti-inflammatory that doctors have injected into joints for more than sixty years. Put it into an inflamed knee or shoulder and it calms the inflammation, and the pain drops, often within days. That part is real, and I never want to talk anyone out of relief that works.

Here is how I explain what it does. Picture a house fire. The inflammation is the fire, and the pain is the smoke alarm going off. A cortisone injection is like walking over and unplugging the alarm because the noise is driving you crazy. The alarm stops. You feel better. The fire is still burning. You have quieted the warning signal without addressing what set it off.

Two problems keep that from being a good long-term plan.

The first is what I call a series of diminishing returns. The first shot might give you three good months. The next gives you two. Then six weeks. Patients notice this pattern themselves, and they usually name it before I do.

The second is the part that too often goes unsaid, and it is the reason I rarely use cortisone at all. Repeated steroid injections may harm the very joint you are trying to save.

The best evidence here is a randomized trial, the strongest kind of study we have. In 2017, researchers at Tufts published a two-year trial in JAMA comparing a triamcinolone steroid injection every three months against a saline placebo in patients with knee osteoarthritis [2]. The steroid group lost significantly more cartilage on MRI, a moderate effect, and got no better pain relief than the saline group for the trouble. The authors’ conclusion was blunt: these findings do not support the treatment. To be fair about what that study shows, the researchers noted that a precise threshold for how much cartilage loss a patient would feel is not yet defined. What is not in doubt is the direction. The steroid thinned cartilage and did not pay for it in pain relief.

Newer data points the same way. A 2025 study in Radiology, drawing on the large Osteoarthritis Initiative database, found that steroid injections were associated with faster osteoarthritis progression on MRI than either hyaluronic acid injections or no injection at all, while hyaluronic acid was associated with slower progression [3]. I want to be honest about the limits of that one, because honest conversations are the whole point of my practice. It was an observational study, not a randomized trial, and the authors are careful to say it shows an association, not proof that steroids cause the damage. But it lines up with the randomized cartilage data, and two independent kinds of evidence pointing the same way is hard to ignore.

Then there is the question patients ask me most: could this send me toward a knee replacement? Faster cartilage loss tracks with higher rates of ending up in a joint replacement, and repeated steroids are tied to faster cartilage loss. I cannot tell you cortisone guarantees a replacement, and the research does not claim that. What I can tell you is that stacking steroid shots may be quietly working against the exact outcome you were hoping to avoid. You would be palliating pain while potentially speeding up the thing you feared.

So cortisone is a legitimate tool for a short window. As a standing strategy, it treats the alarm and lets the fire spread.

PRP: Slower to Start, Built to Protect the Joint

PRP stands for platelet-rich plasma. We draw a small amount of your own blood, spin it down to concentrate the platelets several times above their normal level, and inject that concentrate precisely into the area of damage.

Most people think of platelets as the cells that stop a cut from bleeding. They do that, but that is only part of the job. Platelets are packed with growth factors, the signaling proteins that tell your body to build new tissue, form new blood vessels, and manage inflammation on the way to repair. Think of them as little messengers that show up and shout that this area needs help healing. PRP takes that natural process, concentrates it, and delivers it exactly where you need it.

Back to the house fire. If cortisone unplugs the smoke alarm, PRP is closer to sending in a crew to repair what the fire damaged. It does not suppress the signal. It works on the source.

That is why PRP feels different from a steroid shot. It does not flip pain off in a few days. It often makes you a little more sore in the first week, because you are deliberately stirring up a healing response, and then it builds over the following weeks and months. You are trading speed for durability, and for the joint, that trade pays off.

The research on knee osteoarthritis backs this up, and I want to be precise rather than hand you a slogan. A 2024 systematic review and meta-analysis by Bensa and colleagues in EFORT Open Reviews pooled 35 randomized controlled trials covering 3,348 patients and compared cortisone head to head against PRP [1]. At very short-term follow-up, the two were roughly comparable. At mid- and long-term follow-up, PRP came out ahead on both pain and function. What matters most to me as a clinician is that the researchers did not stop at statistical significance. They measured against the threshold a real patient would notice, and PRP cleared that bar where cortisone did not. Past the three-month mark, the average patient felt a difference in favor of PRP.

The cartilage story favors PRP too, and this is the piece that seals it for me. In a 2024 randomized trial published in Investigative Radiology, researchers compared glucocorticoid, hyaluronic acid, PRP, and placebo, and tracked cartilage quality with a sensitive MRI technique called T2 mapping [4]. PRP showed better cartilage quality than the steroid in the medial part of the knee at twelve months. So the comparison is not only that PRP lasts longer for pain. It is that where cortisone was linked to thinning and degrading cartilage, PRP was linked to protecting and improving it.

I will tell you what none of this proves, because I would rather set honest expectations than oversell. PRP is not a guarantee, and it is not right for every joint or every person. PRP protocols vary, most of these trials followed patients for a year rather than a decade, and the cartilage-quality signal, while encouraging, is still early. What the evidence supports is a clear direction. For durable results and for the health of the joint itself, PRP tends to outlast and outperform cortisone.

Head to Head: How I Actually Choose

The comparison gets simpler once you stop asking which injection is better in the abstract and start asking what a specific patient in front of me needs.

The narrow case for cortisone. Severe, end-stage arthritis, in a patient whose pain has not budged with anything else, who is already scheduled for or clearly headed toward a joint replacement, and who needs a few weeks of relief to get there. In that specific situation the long-term cartilage worry is beside the point, because the joint is already going to surgery. Used once, with intention, as a bridge, cortisone earns its keep. That is where I use it, and mostly there alone.

The case for PRP, which is most cases. Early to moderate arthritis where the goal is to modify the progression rather than chase it with repeat shots. Tendon problems like tennis elbow or patellar tendinopathy, where steroids can weaken the tissue over time and a healing approach makes more sense. Any patient who wants to protect the joint and get off the injection treadmill. If you are not already on the doorstep of a replacement, PRP is almost always the smarter long-term play.

Two things shape the decision more than the injection itself, and they are the ones most comparisons skip.

The first is diagnosis. The most common reason a regenerative treatment fails is not the treatment. It is that it was aimed at the wrong target. Before I talk to anyone about PRP versus cortisone, I want a thorough intake to understand your pain experience and a physical exam that reproduces your pain, telling me what your true pain generators are. Getting the diagnosis right is the most critical part of the treatment process.

The second is how the injection is delivered. This is where I get particular, and I make no apology for it. Every injection I do is guided by ultrasound, so the concentrate lands in the structure I am aiming at rather than near it. And for PRP specifically, we measure the platelet concentration in the clinic with a hematology analyzer, because dose matters. Would you take half a dose of an antibiotic and expect the full result? Not a lot of practices verify what they are injecting. We do, because a precise, measured injection can be the difference between a successful treatment and a failed one.

What About Cost?

I raise this on purpose, because it belongs in an honest comparison and it is usually the real reason people hesitate.

Cortisone is typically covered by insurance. PRP is usually cash-pay, since it is still considered elective. So the sticker price on a steroid shot is lower, and that is a genuine point in its favor for a short-term bridge.

The math shifts when you zoom out. A cheaper injection you repeat three or four times, each one lasting less than the one before, and each one potentially costing you cartilage, is not actually cheaper than a larger upfront investment aimed at fewer, longer-lasting results and a healthier joint. I would rather you weigh the whole picture than the number on the first receipt. We do not use one global price, and we do not pre-sell packages. We treat one injection at a time and price it that way.

The Bottom Line

Cortisone and PRP do different jobs. Cortisone gives you fast, temporary relief by quieting inflammation, and repeated use may thin the cartilage and speed the arthritis you were trying to slow. PRP works slower, aims at the source, and the research shows it holding up better for pain and function past three months while supporting the cartilage rather than wearing it down.

That is why I rarely reach for cortisone. I save it for the narrow case of a patient already headed to a joint replacement who needs a short bridge. For most people, PRP is the better long-term choice, with the diagnosis pinned down first and every injection placed with precision.

If you are weighing this decision for your own knee, shoulder, hip, or tendon, that is exactly the kind of thing a short conversation can sort out. You can schedule a free 15-minute discovery call and we will talk through whether PRP, cortisone, or something else entirely is the right next step for you. No packages, no pressure, just an honest read on your options.

Protea Performance Center, Tempe, AZ 📞 (480) 557-9095 📍 850 W Elliot Rd, Suite 101, Tempe, AZ 85284

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Frequently Asked Questions

Is PRP better than cortisone?

For most people with joint pain, yes. Cortisone works faster in the first few weeks, but PRP produces better pain and function at six to twelve months, and it does so without the cartilage concerns tied to repeated steroids. The 2024 Bensa meta-analysis of 35 randomized trials found PRP outperformed cortisone for knee osteoarthritis at mid- and long-term follow-up by a margin the average patient could feel [1].

Does cortisone damage cartilage?

Repeated cortisone can. In a 2017 JAMA trial, patients who received a steroid injection every three months for two years lost significantly more knee cartilage than patients given saline, with no better pain relief [2]. A 2025 Radiology study using Osteoarthritis Initiative data found steroid injections were associated with faster osteoarthritis progression than hyaluronic acid or no injection [3]. A single, well-placed injection is a different situation from repeated use.

Can cortisone lead to a knee replacement?

It may raise the risk over time. Faster cartilage loss tracks with higher rates of ending up in a knee replacement, and repeated steroid injections are tied to faster cartilage loss. The evidence is about association rather than proven cause, but the pattern is enough that I rarely use cortisone as a long-term plan.

When is cortisone the right choice?

I reserve it for a narrow situation: severe, end-stage joint pain that has not responded to other treatment, in someone already headed for a joint replacement who needs short-term relief to bridge the gap. When the joint is already going to surgery, quick and temporary is exactly the job, and the long-term cartilage concern no longer changes the plan.

How long does a cortisone shot last compared to PRP?

Cortisone relief usually lasts a few weeks to about three months, and each repeat injection tends to last a little less. PRP builds more slowly but tends to last six to twelve months or longer, because it is designed to support tissue repair rather than mask a signal.

Is PRP more painful than a cortisone shot?

PRP often brings more soreness in the first few days, because it deliberately stirs up a healing response. That flare usually settles within a week and is a sign the process is doing its job.

Is PRP covered by insurance?

Usually not. Cortisone is typically covered, and PRP is usually cash-pay. Part of the comparison is honest math: a cheaper injection you repeat several times, each lasting less than the last, versus a larger upfront investment aimed at fewer, more durable results and a healthier joint.

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References

1. Bensa A, Sangiorgio A, Boffa A, et al. Corticosteroid injections for knee osteoarthritis offer clinical benefits similar to hyaluronic acid and lower than platelet-rich plasma: a systematic review and meta-analysis. EFORT Open Reviews. 2024;9(9):883–895.
2. McAlindon TE, LaValley MP, Harvey WF, et al. Effect of Intra-articular Triamcinolone vs Saline on Knee Cartilage Volume and Pain in Patients With Knee Osteoarthritis: A Randomized Clinical Trial. JAMA. 2017;317(19):1967–1975.
3. Bharadwaj UU, Lynch JA, Joseph GB, et al. Intra-articular Knee Injections and Progression of Knee Osteoarthritis: Data from the Osteoarthritis Initiative. Radiology. 2025;315(2):e233081.
4. Tschopp M, Pfirrmann CWA, Brunner F, et al. Morphological and Quantitative Parametric MRI Follow-up of Cartilage Changes Before and After Intra-articular Injection Therapy in Patients With Mild to Moderate Knee Osteoarthritis: A Randomized, Placebo-Controlled Trial. Investigative Radiology. 2024;59(9):646–655.

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This article is for education and does not replace individual medical advice. Regenerative treatments are not FDA-approved to treat or cure any disease; outcomes vary by patient.