MRI Evidence Mounts for PRP in Knee Osteoarthritis – Highlighting the 2025 Double-Blind Trial and How We Deliver this at Dynamic Degenerative Medicine
- Adam Whatley
- Oct 27, 2025
- 4 min read
Updated: 3 days ago
MRI Findings after Injection of Single and Double Centrifuged Platelet-Rich Plasma (PRP) and Placebo (Saline) in Patients with Knee Osteoarthritis: A Randomised Double-Blind Clinical Trial with Six-Month Follow-Up
If you are exploring non-surgical, regenerative options for knee osteoarthritis (OA), the latest research delivers encouraging news. A newly published randomised, double-blind clinical trial titled above (Ghadamzadeh et al., 2025) provides fresh MRI-based evidence. It shows that intra-articular platelet-rich plasma (PRP) injections can improve not only symptoms but also joint structure compared to placebo.
At our clinics in Birmingham & Warwickshire, Dynamic Degenerative Medicine has a long-standing, specialised background in advanced regenerative therapies for degenerative joints. This study reinforces why PRP is an integral part of what we offer, especially for knee OA. Below, I summarise the trial, discuss its implications, and explain how we apply this in practice.
Key Insights from the Trial
The study enrolled patients with grade 2-3 knee OA based on radiographic criteria. They were randomised into three groups:
Single-centrifuged PRP
Double-centrifuged PRP
Placebo (normal saline)
Key MRI and clinical endpoints at the six-month follow-up included:
Cartilage thickness of the medial tibia and patella
Severity of subchondral bone sclerosis
WORMS (whole-organ MRI score) for osteophytes and subchondral cysts
Clinical measures: pain, function, range of motion, and functional tests.
Main Findings
Both PRP groups (single and double centrifuged) showed significantly better improvements than the placebo group in pain, range of motion (ROM), functional tests, WOMAC scores, cartilage thickness (medial tibial and patellar), and severity of subchondral bone sclerosis.
There was no significant difference between single-spin and double-spin PRP groups in those improvements.
To emphasise, PRP improved symptoms, cartilage thickness, and sclerosis.
Why This Matters for Knee OA Treatment
Objective Imaging Improvements
Most PRP trials focus on symptom relief, but this study adds MRI endpoints like cartilage thickness and sclerosis. The fact that cartilage thickness and sclerosis improved is very encouraging.
Placebo-Controlled, Double-Blind Design
This strengthens confidence in the results, especially compared to purely open-label studies.
Pragmatic Relevance
It addresses grade 2-3 OA, which is exactly the patient population we often see.
PRP Versus Saline (Placebo)
It confirms that the benefit is not just a placebo effect: PRP outperformed saline in multiple domains.
No Major Difference Between Single vs Double Centrifugation
While some prior studies theorised that double-spin may be superior, this trial suggests both methods delivered benefits, which gives flexibility in treatment protocols.
How We Translate These Findings at Dynamic Degenerative Medicine
Given the above evidence, we apply the following in our practice:
Careful Patient Selection
We focus on patients with knee OA (typically grade 2-3) who have symptoms like pain and functional loss. We seek those who are motivated for regenerative intervention.
High-Quality PRP Preparation
We use robust centrifugation systems to ensure platelet concentration and preparation quality, whether single or double spin, while avoiding contamination.
Image-Guided Intra-Articular Injections
To maximise accuracy, we minimise risk and optimise joint delivery.
Baseline MRI and Six-Month Follow-Up
We believe imaging is valuable for monitoring structural change, not just symptoms.
Comprehensive Rehabilitation Programme
We combine PRP with physiotherapy and manual therapy/osteopathy. This includes strengthening, alignment optimisation, and weight/biomechanics. Regenerative therapies work best when paired with smart rehabilitation.
Clear Expectation-Setting
We inform patients that while PRP can significantly improve pain, ROM, and function, not all structural changes will reverse rapidly.
Monitoring and Tailored Follow-Up
We review outcomes at 3-6 months, consistent with the trial, and then decide whether further injections or adjunctive therapies are indicated.
Safety & Effectiveness — What the Study Confirms
Safety: The study reported no major adverse events linked to PRP or saline injection. This aligns with broader literature showing PRP is a very safe option when protocols are followed.
Effectiveness: The trial confirms clinically meaningful improvements in pain, function, and ROM, along with measurable improvements in cartilage thickness and sclerosis. This strengthens the case for PRP as a serious option for knee OA rather than just an experimental therapy.
Why Choose Us in Birmingham & Warwickshire for PRP?
At Dynamic Degenerative Medicine, we believe the evidence from this trial and many others positions PRP as one of the best non-surgical regenerative options for moderate knee OA. When you choose us, you get:
✅ Specialists exclusively focused on degenerative joint conditions and regenerative medicine.
✅ Experienced application of PRP protocols aligned with the latest research, including MRI-tracked approaches.
✅ Convenient regional access from Birmingham & Warwickshire.
✅ Integrated care: assessment, PRP injection, image monitoring, physiotherapy, and rehabilitation — all under one roof.
✅ Transparent communication: we will assess your suitability, outline realistic expectations, and review evidence with you before proceeding.
If you are experiencing knee osteoarthritis and have tried conservative management with sub-optimal relief, we invite you to explore a regenerative option backed by emerging MRI evidence. We will review your knee, imaging, symptoms, and goals to assess whether PRP is a suitable path for you.
The trial by Ghadamzadeh et al. (2025) demonstrates that PRP can deliver symptomatic relief and measurable structural improvement in cartilage thickness and sclerosis over six months. At our clinics, we bring that evidence into our practice every day.
Start Your Joint Health Journey Today
If you’re suffering from knee pain, joint stiffness, or early signs of cartilage wear, don’t wait for it to worsen. At Dynamic Regenerative Medicine, we offer cutting-edge regenerative treatments to help protect your joints and preserve your active lifestyle.
📞 Contact us today to book a consultation at our Birmingham or Warwickshire clinic.
01564 330773
📍 Conveniently located in Edgbaston (Birmingham) and Henley-in-Arden (Warwickshire)
Final Thoughts
PRP and Hyaluronic acid (Gel) combination therapy is a powerful, natural, and clinically effective option for those seeking long-term relief from joint pain and early degeneration. When combined with expert care and functional rehabilitation, it provides a safe, proactive strategy to protect joint cartilage and delay the progression of osteoarthritis.
With over a decade of proven success, Dynamic Regenerative Medicine is your trusted partner in joint health and regenerative musculoskeletal care.
Birmingham & Warwickshire
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