Why PRP Doesn’t Always Work: What Patients Need to Know Before Treatment

*By Nikhil Verma, MD | Essential Sports and Spine Solutions | Columbus, Ohio*

Platelet-rich plasma (PRP) therapy has become one of the most talked-about treatments in regenerative medicine — and for good reason. When done correctly, PRP has strong biological rationale and growing clinical evidence for a range of musculoskeletal conditions including back pain, knee osteoarthritis, tendon injuries, and joint dysfunction.

But here’s what most patients don’t hear before they pay out of pocket: not all PRP is the same, and a significant number of failed PRP outcomes have nothing to do with whether the treatment works. They have to do with how it was performed.

If you’ve had PRP and didn’t get results, or if you’re considering PRP and want to make sure you’re giving it the best possible chance of working, this article is for you.

What is PRP therapy?

PRP therapy uses your own blood as the treatment. A small amount is drawn, placed in a centrifuge to separate and concentrate the platelet layer, and then injected into the area of injury or degeneration. Platelets carry growth factors — including PDGF, TGF-beta, VEGF, and IGF-1 — that play a direct role in tissue repair signaling. By concentrating these growth factors and delivering them precisely to damaged tissue, PRP is designed to amplify the body’s own healing response.

You are not introducing anything foreign. The treatment works with your own biology.

Does PRP actually work for musculoskeletal pain?

The evidence for PRP varies by condition, and it is important to be honest about that. Here is where the data is strongest:

**Knee osteoarthritis:** Multiple randomized controlled trials and systematic reviews support PRP for mild to moderate knee OA, with several studies showing superiority over hyaluronic acid injections and comparable or better outcomes than corticosteroids at six and twelve months.

**Lateral epicondylalgia (tennis elbow):** PRP has some of the strongest evidence in this indication. Studies consistently show better long-term outcomes compared to corticosteroid injection, particularly at the 12-month mark.

**Patellar tendinopathy:** PRP shows meaningful benefit for chronic patellar tendon pain that has not responded to conservative care.

**Facet-mediated and discogenic back pain:** The evidence here is earlier-stage but biologically compelling. For appropriately selected patients with identifiable spinal pain generators, PRP is a reasonable option within a comprehensive treatment protocol.

**Rotator cuff and shoulder pathology:** Growing evidence supports PRP for partial-thickness rotator cuff tears and chronic shoulder tendinopathy.

The treatment works. The question is whether it was done right.

Why does PRP fail? The four most common reasons

1. The platelet concentration was not therapeutic

This is the most common and least discussed reason PRP fails.

Not all PRP systems produce the same concentration. Research generally supports a platelet concentration of approximately 5 to 7 times a patient’s baseline as the threshold for meaningful biological activity. Below that level, there may not be enough growth factor signaling to overcome the inflammatory environment of a chronic injury.

Many practices that offer PRP have never verified what concentration their system actually produces. They perform the spin, draw up the concentrate, and inject — without confirming that the platelet yield is in a therapeutic range. In some cases, particularly with low-cost or commodity PRP systems, the concentration may be sub-therapeutic for the severity of the condition being treated.

Before receiving PRP, it is reasonable to ask your provider what system they use, what platelet concentration they typically achieve, and whether they verify yield against your baseline bloodwork.

2. The injection was not placed accurately

Getting PRP to the right structure matters as much as the product itself.

The musculoskeletal system is complex. Back pain alone can originate from the disc, facet joints, sacroiliac joint, posterior ligamentous complex, or surrounding musculature. Knee pain can involve the joint itself, the surrounding tendons, bursae, or ligamentous structures. Injecting into the wrong tissue — even with a high-quality product — will not produce meaningful results.

Fellowship-trained interventional physicians use imaging guidance — fluoroscopy or ultrasound — to confirm needle placement in real time before injecting. This is particularly important for spine injections, where anatomy is complex and the margin for error is narrow.

Providers who perform regenerative injections without imaging guidance are working from feel and surface anatomy alone. For some superficial structures this may be adequate. For spine and deep joint injections, imaging guidance is a meaningful quality differentiator.

3. PRP was used for the wrong diagnosis

PRP has evidence for specific indications. It does not have evidence for everything.

When PRP is offered without a thorough diagnostic workup — without imaging review, physical examination, and identification of the actual pain-generating structure — the likelihood of a good outcome drops significantly. A patient with severe spinal stenosis causing neurogenic claudication is not the same candidate as a patient with isolated facet joint arthropathy. A patient with a complete tendon rupture is not the same as one with chronic tendinopathy.

Good regenerative medicine starts with getting the diagnosis right. That means reviewing imaging directly, not just reading the radiology report. It means doing a physical examination that connects to the pathology. It means being willing to tell a patient when PRP is not the right tool for their specific situation.

4. There was no post-injection protocol

A single injection is rarely the complete answer for chronic musculoskeletal pathology, and the environment after the injection matters.

The growth factors delivered by PRP need appropriate conditions to drive tissue repair. Anti-inflammatory medications taken in the post-injection window can blunt the PRP response. Returning immediately to the loading pattern that caused the injury, without a structured rehabilitation component, can limit outcomes. Sleep quality, nutritional status, and systemic inflammation all play a role in how tissue responds to regenerative stimuli.

Practices that inject and discharge without a post-injection protocol are leaving meaningful outcome variables unmanaged.

What should a PRP evaluation look like?

If you are considering PRP for back pain, knee pain, or any other musculoskeletal condition, here is what a thorough evaluation should include:

– A detailed review of your imaging — not just the report, but the actual MRI or X-ray
– A physical examination that correlates with your imaging findings
– A clear explanation of which structure is being targeted and why
– Information about the PRP system being used and the expected platelet concentration
– A discussion of how many treatments are likely needed and what the post-injection protocol looks like
– An honest conversation about whether PRP is the right tool for your specific condition

If a provider cannot answer those questions, that is important information.

PRP vs. cortisone for musculoskeletal pain

Cortisone injections remain one of the most commonly performed procedures in musculoskeletal medicine, and they have a legitimate place in the treatment toolkit. For acute flares, short-term relief before a procedure, or specific inflammatory conditions, cortisone can be the right call.

The problem is that cortisone has been overused as a default treatment for chronic musculoskeletal conditions where the evidence does not support it long-term. For lateral epicondylalgia, studies consistently show cortisone is superior at six weeks and significantly inferior at twelve months compared to PRP. For knee osteoarthritis, repeated cortisone injections are associated with accelerated cartilage loss over time. For spine pain, cortisone addresses inflammation but does not address the underlying structural degeneration driving the pain.

Cortisone masks. Regenerative medicine is designed to repair. That distinction matters for patients making long-term decisions about their care.

Is PRP covered by insurance?

PRP is generally not covered by insurance for musculoskeletal indications, and it is worth understanding why that matters for quality.

Insurance reimbursement models create strong pressure to reduce cost, which in regenerative medicine can mean reducing platelet volume, using lower-quality systems, or shortening procedural time. At Essential Sports and Spine Solutions, we operate as a cash-pay practice specifically because it allows us to control the quality of what we deliver — the system we use, the concentration we achieve, the time we take. That is a real cost to patients, and we do not minimize it. But it is also a meaningful difference in what the treatment actually is.

PRP for back pain in Columbus, Ohio

Dr. Nikhil Verma is a fellowship-trained Interventional Spine and Sports Medicine physician at Essential Sports and Spine Solutions in Columbus, Ohio. He specializes in non-surgical musculoskeletal care and regenerative medicine, including PRP, BMAC, Prolotherapy, and Micronized Lipoaspirate.

Every regenerative medicine consultation at Essential Sports and Spine Solutions includes direct imaging review, a thorough physical examination, and a protocol built around the patient’s specific anatomy and history — not a template.

If you are in Central Ohio and want to find out whether PRP is right for your situation, you can request a consultation at essentialsportsspine.com/request-appointment

Frequently asked questions about PRP therapy

**Q: How do I know if I am a good candidate for PRP?**
Good candidates for PRP generally have an identifiable musculoskeletal pain generator confirmed on imaging, have had limited or temporary response to conservative treatments, are not candidates for or want to avoid surgery, and are in reasonable overall health. The best way to find out is a proper consultation with a physician who reviews your imaging and takes a complete history.

**Q: How many PRP injections will I need?**
This depends on the condition, its severity, and how you respond to the first treatment. For most musculoskeletal indications, a series of two to three injections spaced appropriately produces better outcomes than a single injection. Some patients respond well to one treatment. We discuss this honestly at the time of consultation.

**Q: How long does it take to feel results from PRP?**
PRP works through a biological repair process, not an anti-inflammatory mechanism. Most patients begin to notice improvement between four and eight weeks after treatment as tissue remodeling progresses. Unlike cortisone, which can provide relief within days, PRP results build over time.

**Q: Can PRP be combined with other regenerative treatments?**
Yes. In some cases, combining PRP with other orthobiologic treatments such as BMAC or Prolotherapy produces better outcomes than any single treatment alone. This depends on the condition and is determined on a case-by-case basis.

**Q: Is PRP safe?**
PRP uses your own blood, which eliminates the risk of allergic reaction or rejection. Risks are primarily procedural — infection, bleeding, or temporary pain at the injection site — and are generally low when performed by a trained physician using sterile technique. There are no systemic side effects associated with PRP because nothing foreign is introduced.

**Q: Why did my PRP not work at another practice?**
The most common reasons are sub-therapeutic platelet concentration, inaccurate needle placement, incorrect diagnosis or patient selection, or absence of a post-injection protocol. A failed PRP experience at one practice does not necessarily mean PRP is not right for your condition — it may mean the execution was the variable.

**Q: How is PRP at Essential Sports and Spine Solutions different?**
Dr. Verma is fellowship-trained in interventional spine, reviews all imaging directly, uses imaging guidance for spine injections, verifies platelet concentration, and builds individualized protocols for every patient. If PRP is not the right tool for your situation, he will tell you that at the consultation.

*This article is for educational purposes only and does not constitute medical advice. Please consult a qualified physician to determine whether PRP therapy is appropriate for your specific condition.*

*Nikhil Verma, MD | Essential Sports and Spine Solutions | Columbus, Ohio | essentialsportsspine.com*

If you want to go deeper on this — the specific protocols I use, how I
think about system selection, and what I tell every patient after an
injection — I cover all of that in my paid newsletter, Essentials of Healing