Prolotherapy vs. PRP vs. Stem Cell Therapy: Which Regenerative Treatment Is Right for You?
If you’ve spent any time researching options for chronic knee, shoulder, hip, or tendon pain, you’ve probably run into a wall of unfamiliar terms — prolotherapy, PRP, MFAT, BMAC, shockwave — all lumped together under “regenerative medicine” like they’re interchangeable. They’re not.
Each one works through a different mechanism, targets a different stage of tissue damage, and is backed by a different body of research. Picking the wrong one — or picking based on whichever your friend happened to get — is how people end up disappointed with a treatment that was never a good match for their injury in the first place.
This guide breaks down what each regenerative treatment actually is, what the research says it’s good for, and how we decide which one (or which combination) fits your specific diagnosis. We’ll also walk through the details that don’t show up in a Google search but make a real difference in outcomes: how concentrated the injection actually is, whether it’s placed with real-time imaging or by feel, and why the physical therapy that follows matters as much as the injection itself.
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Regenerative Medicine Is Not One Treatment - It's A Spectrum
The core idea behind every regenerative treatment in this guide is the same: instead of masking pain (cortisone) or cutting and repairing tissue (surgery), regenerative injections deliver growth factors, cellular material, or a controlled healing stimulus directly to damaged tissue to promote actual repair.
Where they differ is intensity and target. Prolotherapy and shockwave sit at the more accessible end of the spectrum — lower cost, less involved to perform, well-suited to ligament laxity, mild-to-moderate tendinopathy, and early joint changes. PRP sits in the middle, concentrating your own blood’s growth factors for targeted tendon and cartilage support. MFAT and bone marrow aspirate concentrate (BMAC) are the most advanced tools — cell-based therapies reserved for moderate-to-severe osteoarthritis and structural damage that PRP alone won’t resolve.
This isn’t a hierarchy of “better” to “worse.” It’s a matter of matching the right tool to the tissue in front of us — which is exactly why the evaluation before any injection matters as much as the injection itself.
The 5 Regenerative Treatments We Use In St. Petersburg
1. Prolotherapy
Prolotherapy (short for “proliferative therapy”) is the injection of a hypertonic dextrose solution — typically 12.5–25% dextrose in saline — directly into a damaged ligament, tendon, or joint. The concentrated sugar solution creates a mild, controlled irritation that signals the body’s own repair cells to migrate to the area and lay down new collagen. As a regenerative treatment, this particular procedure is often overlooked, but it does exceptionally well for many injuries while also limiting downtime. Dr. John Broussard, DO travels across the world teaching this particular treatment to other physicians on how to properly do this procedure.
Most patients go through 3–6 sessions spaced 2–4 weeks apart. It’s the most accessible entry point on the spectrum and works especially well for joint instability, ligament laxity, and early-to-moderate tendinopathy.
What the research shows: A 2024 systematic review and meta-analysis of dextrose prolotherapy for knee osteoarthritis found significant reductions in pain and stiffness compared with other treatments and placebo (Khateri et al., 2024). A 2025 mechanistic review in Frontiers in Endocrinology further outlined how the dextrose-driven inflammatory cascade stimulates collagen synthesis and chondrocyte activity — the biological basis for prolotherapy’s effect on both joint and tendon tissue (Huang & Cai, 2025).
2. PRP (Platelet Rich Plasma)
PRP is one of the most widely known regenerative treatments. PRP starts with a small blood draw — your own blood — spun in a centrifuge to concentrate the platelets, which carry hundreds of growth factors involved in tissue repair (PDGF, TGF-beta, VEGF, IGF-1, among others). That concentrated plasma is then injected directly into the damaged tissue.
Because it’s autologous (it comes from you), there’s essentially no rejection risk. The variable that actually determines whether PRP works is preparation and dose — more on that below.
What the research shows: A 2025 network meta-analysis found that higher-dose, multi-injection PRP protocols produced significantly better pain and function outcomes for knee osteoarthritis than single, lower-dose injections. For tendinopathy specifically, a landmark randomized, double-blind trial found that a single PRP injection produced significantly better outcomes than a corticosteroid injection for chronic gluteal tendinopathy — and a 2-year follow-up of the same patients confirmed the PRP group’s improvement was sustained, while the corticosteroid group’s benefit had faded by 24 weeks (Fitzpatrick et al., 2018; Fitzpatrick et al., 2019).
3. MFAT (Micro-Fragmented Adipose Tissue)
MFAT is harvested from your own fat — usually the abdomen or flank — through a minimally invasive mini-liposuction, then mechanically processed (not enzymatically digested) to preserve its natural scaffold structure along with the mesenchymal stem cells, pericytes, and bioactive proteins inside it. That processed tissue is injected directly into the target joint.
MFAT delivers two things PRP can’t: a physical scaffold and a much richer regenerative signal — which is why it’s typically reserved for moderate-to-severe osteoarthritis where there’s real structural cartilage loss, not just tendon irritation.
What the research shows: A 2025 study following 335 patients who received a single MFAT injection for knee osteoarthritis found sustained improvement in pain and function scores across the full three-year follow-up period, and found that how a patient responded at 3 months reliably predicted their long-term outcome (Stanciu et al., 2025).
4. Bone Marrow Aspirate
Bone Marrow Aspirate is harvested from the iliac crest of your pelvis through a needle aspiration under local anesthesia, then centrifuged to concentrate mesenchymal stem cells, hematopoietic stem cells, and growth factors like TGF-beta, BMP-2, and VEGF. It’s the most cell-rich autologous therapy we offer, and we reserve it for the most advanced or complex cases — typically Grade 2+ osteoarthritis, bone marrow lesions, or patients who’ve been told surgery is their only remaining option and want to exhaust every conservative avenue first.
What the research shows: A 15-year matched cohort study of hip osteoarthritis patients found that only about 16% of patients who received targeted bone marrow concentrate injected into the affected bone eventually required joint replacement, compared with roughly 40% of matched patients who received standard conservative care (Hernigou et al., 2026). A separate 2026 study using BMAC injected specifically into the subchondral bone (the layer just beneath cartilage) found meaningful improvements in both pain scores and MRI-confirmed bone marrow lesions at 12 months — the exact structural changes that predict who’s headed toward knee replacement (Subchondral BMAC Study, Journal of Orthopaedic Surgery and Research, 2026).
5. Shockwave Therapy
Extracorporeal Shockwave Therapy (ESWT) is the one non-injection tool in the regenerative treatment lineup. A handheld device delivers high-energy acoustic pulses through the skin, which stimulates cellular repair, breaks down calcium deposits in tendons, increases local blood flow, and triggers growth factor release — no needle required. Sessions take about 10–15 minutes and are done in-office.
Shockwave shines for calcific tendinitis, plantar fasciitis, and Achilles or patellar tendinopathy, and it’s frequently paired with an injection: shockwave breaks down calcification and preps the tissue environment first, then the injection delivers the growth factors to build new tissue.
What the research shows: A 2024 systematic review and meta-analysis found extracorporeal shockwave outperformed corticosteroid injections for plantar fasciitis at both 3 and 6 months — reducing pain, reducing plantar fascia thickness on imaging, and improving foot function more than the steroid injection did (Shockwave vs. Corticosteroid Meta-Analysis, 2024).
Why The Same Regenerative Treatment Can Get Completely Different Results
Two clinics can offer “the same” PRP injection and produce very different results, because the regenerative treatment name on the intake form doesn’t tell you the two things that actually drive outcomes: how concentrated the injection is, how precisely it’s placed, and what is done after the procedure.
Concentration and dosing. A 2025 network meta-analysis of PRP for knee osteoarthritis found that higher platelet doses and multi-injection protocols outperformed single, low-dose injections. A separate systematic review reached the same conclusion, identifying an optimal threshold above roughly 10 billion total platelets delivered for the strongest functional outcomes (Hooper et al., 2026). In practice, that means a PRP or MFAT injection prepared casually — without attention to platelet count or processing method — can under-deliver on the exact mechanism that makes the treatment work.
This is one of the most common reasons we hear about a “failed” PRP injection from somewhere else. When a patient comes to us after PRP didn’t work and we walk back through what was actually done, the pattern is often the same: not enough blood was drawn to begin with, which means there simply weren’t enough platelets in the syringe to trigger a real healing response — no matter how well the injection itself was placed. We standardize our draw volume and preparation protocol and track concentration on every single patient for this reason; it’s not a detail we treat as optional.
Diagnostic and injection-guiding ultrasound. The other question we ask patients with a failed regenerative treatment elsewhere is whether ultrasound was used to guide the needle — and often, it wasn’t. That means the provider was injecting by feel and anatomical landmarks, with no real-time confirmation the material actually reached the damaged tissue rather than the fat or muscle around it.
Every regenerative injection we perform is done under real-time ultrasound guidance — not landmark-based, “feel for it” injection technique. Before we ever pick up a needle, we use in-office diagnostic ultrasound as part of your initial evaluation, which means you leave your first visit with an actual picture of what’s damaged, not a referral slip and a guess. That same ultrasound guides the injection itself, confirming the needle tip is exactly where the damaged tissue is — not approximately near it. For a joint or tendon injection, the difference between “close” and “exact” is often the difference between a treatment that works and one that doesn’t.
The Part Most People Underestimate: Physical Therapy After The Procedure
Regenerative injections aren’t a passive fix. Prolotherapy, PRP, MFAT, and Bone Marrow Aspirate all work by triggering a biological healing window — new collagen forming, tissue remodeling, cells migrating into damaged structures — and that healing window responds directly to how the tissue is loaded during it. Under-load it and you waste the biological stimulus. Overload it too soon and you can disrupt the repair before it’s structurally sound.
This is why every regenerative treatment plan at Alliance is built alongside our physical therapy team, not handed off after the fact. Your PT program is timed to your injection schedule — light, protected movement early in the healing window, then progressively heavier loading as the tissue matures — so the exercise itself becomes part of the treatment instead of something layered on top of it. It’s a meaningful reason our patients see the results they do: the injection starts the repair process, and progressive loading through PT is what actually builds durable, load-tolerant tissue.
How We Decide Which Treatment is Right For You
Every patient starts with a full evaluation: a movement screen, strength assessment, and in-office diagnostic ultrasound — not a five-minute consult followed by a pre-packaged injection. From there, the decision typically comes down to a few questions:
- How much structural damage is there? Mild tendinopathy or joint laxity generally responds well to prolotherapy or PRP. Moderate-to-severe osteoarthritis with real cartilage loss is where MFAT or BMAC becomes appropriate.
- What has already been tried? If cortisone or PT alone has plateaued, that’s often a sign the tissue needs the proliferative stimulus prolotherapy or PRP provides — not another round of anti-inflammatories.
- Is calcification or scar tissue part of the picture? Calcific tendinitis and chronic plantar fasciitis respond especially well to shockwave, often paired with an injection.
- Is surgery on the table? If a surgeon has recommended a procedure and you want to exhaust every conservative option first, MFAT or BMAC are the treatments with the strongest evidence for delaying or avoiding that outcome.
If we don’t think a regenerative approach is the right fit for your case, we’ll tell you directly. We’re not trying to sell a procedure — we’re trying to match the right treatment to your diagnosis.
Our Approach to Treating Pain Regenerative Medicine at Alliance Regen & Rehab
At Alliance Regen & Rehab, we don’t start with a pre-packaged injection protocol. Our team of sports medicine physicians and Doctors of Physical Therapy works from in-house diagnostic ultrasound to see exactly what’s happening in the tissue — not guess based on symptoms alone. Every patient starts with a full evaluation: a movement screen, strength assessment, and in-office diagnostic ultrasound, so you leave your first visit with an actual picture of what’s damaged and a plan built around it — not a referral slip.
From there, treatment is built around your specific diagnosis, often blending physical therapy with the regenerative option that matches your tissue damage — whether that’s PRP, prolotherapy, MFAT, bone marrow aspirate concentrate, or shockwave. If we don’t think a regenerative approach is the right fit for your case, we’ll tell you directly. We’re not trying to sell a procedure — we’re trying to match the right treatment to your diagnosis.
Frequently Asked Questions
What's the difference between PRP and stem cell therapy?
PRP concentrates growth factors from your own blood plasma — it doesn't contain stem cells. MFAT and bone marrow aspirate concentrate (BMAC) are the true stem cell-based options, delivering mesenchymal stem cells from fat or bone marrow. PRP is generally used for tendon and mild-moderate joint issues; MFAT/BMAC are reserved for more advanced structural damage.
Is prolotherapy the same as PRP?
No. Prolotherapy uses a dextrose (sugar) solution to trigger a healing response, while PRP uses concentrated platelets from your own blood. Prolotherapy is often the more accessible starting point for ligament and joint instability; PRP is typically used for tendon tears and more targeted tissue repair.
How do I know if I need MFAT or BMAC instead of PRP?
Generally, if imaging shows Grade 2 or higher osteoarthritis, or you've had a partial response to PRP or prolotherapy but not full relief, MFAT or BMAC become appropriate next steps. We make this determination based on your diagnostic ultrasound findings and imaging, not guesswork.
Do regenerative treatments hurt, and is there downtime?
Most patients describe a pressure or mild burning sensation during the injection itself, and some soreness for a day or two afterward — similar to a tough workout. There's little to no significant downtime for prolotherapy, PRP, or shockwave; MFAT and BMAC involve a short recovery from the harvesting procedure (typically a few days). with continued progress over the following months.
How many sessions will I need?
It depends on the treatment and your diagnosis. Prolotherapy and shockwave typically involve multiple sessions spaced weeks apart. PRP is often 1–3 sessions. MFAT and BMAC are typically a single injection, occasionally repeated based on your response.
Will insurance cover regenerative medicine treatments?
Most regenerative treatments, including PRP, prolotherapy, MFAT, and BMAC, are not currently covered by commercial insurance or Medicare, as they remain a rapidly evolving field. We'll walk you through cost and options during your evaluation.
Ready to Get Back to a Pain-Free Life?
You don’t have to accept pain as part of your life. If it’s been showing up day after day and in the activities you love, let’s find out why. Schedule a consultation with our sports medicine physician at Alliance Regen & Rehab in St. Petersburg and find out what’s really driving your pain — and how to fix it.
Contact Alliance Regen and Rehab
Locations: St. Petersburg and Tampa
Phone: (727) 258-7224
Email: info@thealliancerx.com
Website: thealliancerx.com
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Citations
- Fitzpatrick, J., Bulsara, M. K., O’Donnell, J., McCrory, P. R., & Zheng, M. H. (2018). The effectiveness of platelet-rich plasma injections in gluteal tendinopathy: A randomized, double-blind controlled trial comparing a single platelet-rich plasma injection with a single corticosteroid injection. American Journal of Sports Medicine, 46(4), 933–939. https://asipp.org/wp-content/uploads/The-Effectiveness-of-Platelet-Rich-Plasma-Injections-in-Gluteal-Tendinopathy-Double-Blind-Study-2018-The-American-J-of-Sports-Medicine.pdf
- Fitzpatrick, J., Bulsara, M. K., O’Donnell, J., & Zheng, M. H. (2019). Leucocyte-rich platelet-rich plasma treatment of gluteus medius and minimus tendinopathy: A double-blind randomized controlled trial with 2-year follow-up. American Journal of Sports Medicine, 47(5), 1130–1137. https://asipp.org/wp-content/uploads/Leucocyte-Rich-Platelet-Rich-PRP-Treatment-of-Glueus-Medius-and-Minimus-Tendinopathy-2-year-Follow-up-2019-The-American-J-of-Sports-Medicine.pdf
- Hernigou, P., Centeno, C. J., Berger, D. R., Dodson, E., & Murphy, M. B. (2026). Intraosseous bone marrow concentrate delays total hip arthroplasty in osteoarthritis: A fifteen-year matched cohort study with dose–response analysis. International Orthopaedics. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13408129/
- Hooper, et al. (2026). Platelet-rich plasma outcomes in knee osteoarthritis are associated with the amount of total deliverable platelets: A systematic review and meta-analysis. PM&R. https://onlinelibrary.wiley.com/doi/10.1002/pmrj.13455
- Huang, K., & Cai, H. (2025). Hypertonic dextrose prolotherapy in osteoarthritis: Mechanisms, efficacy, and future research directions. Frontiers in Endocrinology, 16, 1602727. https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2025.1602727/full
- Khateri, S., Behbahani Nejad, F., Kazemi, F., Alaei, B., Azami, M., Moradkhani, A., Majidi, L., & Moradi, Y. (2024). The effect of dextrose prolotherapy on patients diagnosed with knee osteoarthritis: A comprehensive systematic review and meta-analysis of interventional studies. Health Science Reports, 7, e2145. https://pmc.ncbi.nlm.nih.gov/articles/PMC11194473/
- Comparative efficacy of different doses of platelet-rich plasma injection in the treatment of knee osteoarthritis: A systematic review and network meta-analysis. (2025). Journal of Orthopaedic Surgery and Research. https://pubmed.ncbi.nlm.nih.gov/40022138/
- Stanciu, N., Heidari, N., Slevin, M., Ujlaki-Nagi, A. A., Trâmbițaș, C., Arbănași, E. M., Russu, O. M., Melinte, R. M., Azamfirei, L., & Brînzaniuc, K. (2025). Predicting long-term benefits of micro-fragmented adipose tissue therapy in knee osteoarthritis: Three-year follow-up on pain relief and mobility. Journal of Clinical Medicine, 14(13), 4549. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12249884/
- Subchondral bone marrow aspirate concentrate injection improves clinical outcomes and reduces bone marrow lesions in knee osteoarthritis: 12-month retrospective analysis. (2026). Journal of Orthopaedic Surgery and Research. https://pubmed.ncbi.nlm.nih.gov/42135786/
- Efficacy of extracorporeal shockwave therapy, compared to corticosteroid injections, on pain, plantar fascia thickness and foot function in patients with plantar fasciitis: A systematic review and meta-analysis. (2024). https://pubmed.ncbi.nlm.nih.gov/38738305/