PRP vs. Cortisone Injections: What the Long-Term Evidence Actually Shows

If you’ve had a cortisone injection, you probably know the feeling: real relief, sometimes dramatic relief, that lasts six weeks and then fades. And if you’ve been told to come back for another one, you might have started wondering whether something better exists.

The short answer is: sometimes, yes. But the longer answer matters more.

This article is the honest version of the cortisone vs. PRP conversation, including where cortisone is appropriate, what the research shows at 52 weeks, and how platelet-rich plasma (PRP) works as a biologically different approach to the same problem.

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What Cortisone Injections Do (and Don’t Do)

Cortisone is a corticosteroid, a powerful anti-inflammatory agent. When injected into a joint, bursa, or tendon, it suppresses the local inflammatory process. That suppression reduces pain and swelling, often quickly.

What cortisone does not do is repair damaged tissue. It does not rebuild cartilage, restore tendon integrity, or address the underlying structural problem. When the anti-inflammatory effect wears off, the pain returns, because the tissue issue was never addressed.

In the right clinical context, managing inflammation is exactly the right first move. Acute bursitis, a patient who needs to get through physical therapy, or a situation where insurance limits other first-line options, these are all scenarios where cortisone can be a legitimate and useful tool.

The problem is when it becomes the only tool, repeated without a longer-term plan or an honest conversation about what it can realistically accomplish.

What the 52-Week Data Shows

One of the most frequently referenced studies in musculoskeletal medicine compared cortisone injections, physical therapy, and a wait-and-see approach for lateral epicondylalgia (tennis elbow). At six weeks, the cortisone group showed the best outcomes. At 52 weeks, the cortisone group showed the worst.

Similar patterns have been observed in studies on rotator cuff tendinopathy, plantar fasciitis, and patellar tendinopathy. The short-term relief is real. The longer-term trajectory in certain conditions is where the evidence becomes more concerning.

This is not a clean verdict against cortisone. Condition type, injection frequency, and patient-specific factors all influence outcomes. But this data should be part of any honest pre-injection conversation, and in many practices, it isn’t.

What Is PRP and How Is It Different?

Platelet-rich plasma (PRP) is derived from your own blood. A small sample is drawn, placed in a centrifuge, and spun down to concentrate the platelets, the blood components that carry growth factors your body uses to repair tissue.

That concentrated platelet solution is then injected precisely into the damaged area, typically under ultrasound guidance to ensure accurate placement.

The key difference from cortisone is mechanistic. Cortisone suppresses a biological process (inflammation). PRP attempts to accelerate a different one (tissue repair). Rather than quieting the area down, PRP tries to deliver the biological signals that prompt healing.

For this reason, PRP is considered a regenerative treatment, one that works with the body’s repair mechanisms rather than against them.

When Does PRP Make Sense?

PRP has the strongest evidence base in the following conditions:

Knee osteoarthritis: Multiple randomized controlled trials show PRP outperforming both saline and hyaluronic acid for pain and function at 6 to 12 months.

Lateral epicondylalgia (tennis elbow): Studies show PRP producing superior long-term outcomes compared to cortisone in chronic cases.

Patellar tendinopathy: Emerging evidence supports PRP for partial tears and chronic tendinopathy not responding to conservative care.

Plantar fasciitis: Growing evidence for PRP in chronic cases, particularly where cortisone has provided only temporary relief.

Rotator cuff tendinopathy: Evidence is developing, with positive signals for partial tears and chronic tendinosis.

PRP is not appropriate for every patient or every condition. It is not a cure for advanced arthritis, and it does not replace surgery when surgery is indicated. What it offers is a biologically rational option for patients who are failing conservative care and not yet at a surgical threshold.

The MRI Question

One thing that distinguishes regenerative medicine practice at the fellowship-trained level is the emphasis on reviewing imaging personally before any procedure.

Radiology reports are summaries. They are written by radiologists who have not examined the patient and do not have the clinical context a treating physician does. A report that says “mild degenerative changes” can represent a wide range of actual clinical situations, some of which change the treatment decision entirely.

At Essential Sports and Spine Solutions, Dr. Verma reviews every patient’s MRI personally before any injection procedure. The goal is to make sure the treatment matches what is actually happening in the tissue, not just what the summary says.

What to Expect at a Regenerative Medicine Consultation

A consultation at Essential Sports and Spine Solutions includes a full clinical evaluation, personal MRI review, and a clear explanation of all relevant options, including whether PRP, BMAC (bone marrow aspirate concentrate), prolotherapy, or continued conservative care is most appropriate for your specific situation.

There is no one-size-fits-all answer. The goal is to give you the honest version of your options so you can make an informed decision.

FAQ

Q: Is cortisone bad for you? A: Not inherently. It’s a tool with appropriate uses. The concern is overuse or repeated injections without a plan, particularly for tendinopathies where the long-term data shows worse outcomes compared to other approaches.

Q: How many cortisone shots can you get? A: Most guidelines recommend caution after two to three injections in the same location. After that, a conversation about tissue health and alternative options is appropriate.

Q: How long does PRP last? A: Results vary by condition and individual. For knee osteoarthritis, studies show benefits extending 12 months or longer in many patients. Most patients with tendinopathies require a series of injections and see continued improvement over 3 to 6 months following treatment.

Q: Is PRP covered by insurance? A: Most insurance plans do not currently cover PRP. Essential Sports and Spine Solutions is a cash-pay practice. This structure allows for longer appointments, personalized care, and treatment decisions based on clinical need rather than insurance authorization.

Q: Where can I get PRP injections in Columbus, Ohio? A: Dr. Nikhil Verma offers PRP, BMAC, and other regenerative procedures at Essential Sports and Spine Solutions in Columbus. Request an appointment at essentialsportsspine.com.

Q: What is the difference between PRP and stem cell injections? A: PRP uses concentrated growth factors from your own blood. Many clinics marketing “stem cell” injections are actually injecting amniotic or umbilical cord-derived products that contain no living stem cells, a marketing claim not supported by the evidence. PRP derived from your own blood has an established mechanism and a growing evidence base.

Dr. Nikhil Verma is a fellowship-trained Interventional Spine and MSK physician at Essential Sports and Spine Solutions in Columbus, Ohio.

This article is for educational purposes only and does not constitute medical advice.

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