PRP vs. BMAC vs. Lipoaspirate for Knee Arthritis: A Columbus Patient’s Complete Comparison Guide

By Nikhil Verma, MD | Board-Certified PM&R, Fellowship-Trained Interventional Spine & Sports Medicine

Essential Sports and Spine Solutions | Columbus, Ohio

If you’ve been living with knee pain for months or years, you’ve probably been through the usual sequence: anti-inflammatories, physical therapy, cortisone shots. Maybe you’ve been told your X-ray or MRI shows “bone-on-bone” arthritis and that your only real option is knee replacement surgery.

Here’s what that conversation often leaves out: for a large number of patients, regenerative medicine offers a legitimate, evidence-supported path that doesn’t involve going under the knife. And in Columbus, Ohio, more patients are exploring that path every year.

But regenerative medicine isn’t one thing. The three most common options I use in my practice — Platelet-Rich Plasma (PRP), Bone Marrow Aspirate Concentrate (BMAC), and Lipoaspirate (adipose-derived therapy) — each work differently, are suited to different patients, and carry different levels of evidence. Choosing between them isn’t about picking the most expensive or the most hyped. It’s about matching the right biological tool to the right clinical picture.

This guide walks you through exactly that.

Educational purposes only. This article is intended to provide general information about regenerative medicine options for knee osteoarthritis. It is not a substitute for individualized medical advice, diagnosis, or treatment. Always consult a qualified physician before making any treatment decisions.

Why “Which Treatment Is Right for Me?” Is the Right Question

One of the biggest frustrations patients bring into my office is that they’ve researched regenerative medicine online and gotten completely different answers depending on what they read. One source says PRP is the gold standard. Another says BMAC (often marketed as “stem cell therapy”) is superior. A third says fat injections are the new frontier.

The truth is that all three have legitimate roles — and the distinction isn’t about which one is “best.” It’s about which one is best for you, given your degree of arthritis, your anatomy, your goals, and the specific biology of your joint.

A few things I look at before recommending any regenerative treatment for the knee:

• The grade and pattern of cartilage loss on MRI (I review imaging personally before any procedure)
• Whether the primary problem is structural deterioration, chronic inflammation, or both
• The patient’s activity level and functional goals
• Prior treatment history — what has and hasn’t worked
• Patient anatomy and availability of source tissue (important for BMAC and lipoaspirate)

Platelet-Rich Plasma (PRP): The Best-Evidenced Starting Point

What it is

PRP is made from your own blood. We draw a small amount, spin it in a centrifuge to concentrate the platelets, and inject the resulting plasma directly into the knee joint. Those concentrated platelets release growth factors — PDGF, TGF-β, VEGF, and others — that signal the body’s repair processes and help modulate inflammation in the joint environment.

Who it’s best for

PRP has the strongest evidence base of the three options for knee osteoarthritis. Multiple randomized controlled trials have shown it can meaningfully reduce pain and improve function in patients with mild-to-moderate knee OA. It’s typically the first-line regenerative option I reach for, particularly for:

• Patients with early to moderate arthritis (Kellgren-Lawrence Grade 1–3)
• Active patients who want to delay or avoid surgery
• Patients who want to start with the least invasive option
• Younger patients with cartilage injuries alongside early OA changes

What to expect

PRP is an in-office procedure that takes roughly one hour from blood draw to injection. There is typically some soreness in the joint for two to five days after the injection as the inflammatory cascade activates. Most patients can return to light activity within a week. I typically recommend a series of one to three injections depending on the severity of the condition and how the patient responds. Most patients begin noticing improvement at four to six weeks, with the full effect developing over three to six months.

BMAC (Bone Marrow Aspirate Concentrate): The More Robust Option for Advanced Disease

What it is

BMAC is derived from a small sample of bone marrow, typically aspirated from the posterior iliac crest (the back of your hip) under local anesthesia. This aspirate contains a mix of mesenchymal stem cell precursors, growth factors, anti-inflammatory cytokines, and naturally occurring scaffolding proteins. It’s often referred to as “stem cell therapy” in marketing materials, but I want to be precise here: BMAC is a bone marrow concentrate, not an isolated or expanded stem cell product. The distinction matters both clinically and from a regulatory standpoint.

Who it’s best for

BMAC is better suited for patients who need a more robust regenerative stimulus. I consider it for:

• Moderate-to-severe knee OA (Kellgren-Lawrence Grade 3–4)
• Patients who have tried PRP without achieving adequate relief
• Cases where there is significant cartilage loss and a richer biologic environment may be beneficial
• Patients who are not yet surgical candidates but have exhausted other conservative options

What to expect

Because BMAC requires the bone marrow aspiration step, it is a more involved procedure than PRP, though it is still performed in-office under local anesthesia. Patients typically experience soreness at both the aspiration site and the knee for three to seven days. Activity modification for one to two weeks is usually recommended. The timeline for clinical improvement is similar to PRP — most patients notice meaningful change at four to eight weeks, with continued improvement over several months.

Lipoaspirate (Adipose-Derived Therapy): The Anti-Inflammatory Powerhouse

What it is

Adipose-derived therapy — what I sometimes call lipoaspirate or microfragmented fat — uses a small amount of fat tissue, typically harvested from the abdomen or flank via a mini-lipoaspiration procedure. The fat is then processed (either mechanically microfragmented or processed into a stromal vascular fraction) and injected into the joint. Adipose tissue is remarkably rich in regenerative cells and anti-inflammatory mediators, including a high concentration of stromal vascular fraction (SVF).

Who it’s best for

Lipoaspirate is particularly well-suited when the inflammatory component of knee OA is prominent. It’s a strong option for:

• Patients with significant synovitis (joint lining inflammation) alongside structural OA changes
• Patients who have adequate fat tissue available for harvest
• Cases where both structural support and inflammation control are needed simultaneously
• Patients seeking an alternative to BMAC who prefer not to undergo bone marrow aspiration

What to expect

This procedure is more similar to BMAC in terms of complexity — the addition of the lipoaspiration step means it takes longer and requires local anesthesia at both the harvest and injection sites. Soreness at both sites is typical for three to seven days. The evidence base for adipose-derived therapy is growing, and early results for knee OA are promising, though there is less head-to-head comparative data with PRP at this stage.

Side-by-Side Comparison

How I Approach Treatment Selection at Essential Sports and Spine Solutions

Every patient who comes to me for a regenerative medicine consultation gets a thorough evaluation before I make any recommendation. That means reviewing your imaging personally — not just reading a radiology report — so I can see exactly what’s happening in the joint. It means taking a detailed history of what you’ve already tried, how it responded, and what your functional goals are.

For most patients with mild-to-moderate knee OA who haven’t tried regenerative medicine before, PRP is a logical first step: strong evidence, minimally invasive, in-office, with a well-established safety profile. For patients with more advanced disease, or those who’ve had an inadequate response to PRP, BMAC or lipoaspirate may offer a more appropriate biologic stimulus.

In some cases, I combine approaches — for example, a lipoaspirate injection at the same visit as PRP — when the clinical picture suggests benefit from both pathways. That kind of individualized treatment planning is what separates regenerative medicine done well from the one-size-fits-all approach you’ll encounter in some settings.

Regenerative medicine is not a miracle cure and it doesn’t work for everyone. But for the right patient, it can meaningfully reduce pain, improve function, and delay or in some cases avoid surgery. That’s a conversation worth having before you schedule a joint replacement.

Frequently Asked Questions

Is PRP or BMAC better for knee osteoarthritis?

Neither is universally better — the right choice depends on the severity of your arthritis and your clinical picture. PRP has stronger published evidence for mild-to-moderate OA and is a logical first-line option. BMAC may be more appropriate for patients with more advanced disease or those who haven’t responded adequately to PRP. Both are viable options, and the best choice is the one made after a thorough evaluation by a physician who reviews your imaging and understands your history.

Does insurance cover regenerative medicine for knee arthritis in Ohio?

Most regenerative medicine procedures — including PRP, BMAC, and lipoaspirate — are not routinely covered by insurance as of 2026, as they are generally classified as investigational for osteoarthritis. Some insurance plans may cover PRP for specific indications. At Essential Sports and Spine Solutions, we offer transparent cash pricing and can walk you through what to expect before you commit to anything.

How many PRP injections do I need for knee arthritis?

This varies by patient. Most protocols for knee OA involve one to three PRP injections, often spaced four to six weeks apart. Your response to the first injection helps guide the decision about whether additional treatments are warranted. I don’t recommend a fixed number upfront — the goal is to use the minimum number of treatments that achieves meaningful clinical benefit.

What is the recovery time after BMAC for the knee?

Most patients experience soreness at both the bone marrow aspiration site (typically the back of the hip) and the knee for three to seven days. I typically recommend activity modification for one to two weeks — avoiding high-impact loading of the joint while the early inflammatory phase settles. Most patients can return to light activity and desk work within a few days.

Who is a good candidate for regenerative medicine for knee pain in Columbus?

Good candidates are generally adults with documented knee osteoarthritis (confirmed on imaging), who have not achieved adequate relief from physical therapy, anti-inflammatories, or cortisone injections, and who either want to avoid surgery or are not yet surgical candidates. The best way to know if you’re a candidate is to come in for a consultation. I’ll review your MRI, take a full history, and give you an honest assessment of whether I think regenerative medicine is likely to help you.

Is regenerative medicine for knee arthritis safe?

All three options — PRP, BMAC, and lipoaspirate — use your own biological tissue, which significantly reduces the risk of adverse reactions. The safety profile for these procedures is well established. The most common side effects are temporary soreness and swelling at the injection site. Serious complications are rare. That said, any injection carries a small risk of infection or bleeding, and these procedures should only be performed by trained physicians in an appropriate clinical setting.

Ready to Find Out If Regenerative Medicine Is Right for Your Knee?

Dr. Nikhil Verma sees patients at Essential Sports and Spine Solutions in Columbus, Ohio. Schedule a consultation to have your imaging reviewed and get a personalized treatment plan.

☎  614-626-8707   |   essentialsportsspine.com   |   6100 East Main Street, Suite 107, Columbus, OH 43213

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*For educational purposes only. This article does not constitute medical advice and is not a substitute for an individualized consultation with a qualified physician.*