Prolotherapy vs Steroid Injections for Knee Pain – Which Produces Better Results?
If you have been dealing with chronic knee pain you have almost certainly been offered a steroid injection at some point – either on the NHS or privately. Cortisone injections are one of the most commonly performed procedures in musculoskeletal medicine and for many years they were considered the gold standard for knee pain management. But the picture is more complicated than it first appears – and a growing body of evidence suggests that for many patients steroid injections are not only less effective than alternatives but may actually be making the underlying problem worse.
In this post we compare Prolotherapy with steroid injections for knee pain – looking at how each works, what the evidence says and which approach produces better long term outcomes for the most common knee pain presentations.
How Steroid Injections Work for Knee Pain
Corticosteroid injections – commonly cortisone or methylprednisolone – work by suppressing the inflammatory response in the knee joint. The steroid blocks the production of inflammatory prostaglandins and cytokines, reducing swelling, heat and pain in the short term. For many patients this produces meaningful relief within a few days of injection.
The problem is that the relief is temporary. The steroid does not repair the underlying tissue damage that is generating the inflammation – it simply switches off the body’s response to it. When the steroid wears off – typically after six to twelve weeks – the inflammation returns because its cause has not been addressed. Most patients find themselves returning for repeat injections at progressively shorter intervals.
The Problem with Repeated Steroid Injections
Beyond the diminishing returns of repeated steroid injections there is a more serious concern – the evidence that repeated corticosteroid injections cause direct tissue damage.
Multiple published studies have demonstrated that repeated cortisone injections into joints accelerate cartilage breakdown – the very tissue loss that leads to bone on bone arthritis and ultimately knee replacement. A landmark study published in JAMA demonstrated significantly greater cartilage volume loss in patients receiving repeated corticosteroid injections compared to placebo over two years. Another study showed that patients who received more than three corticosteroid injections before knee replacement surgery had worse surgical outcomes than those who had not.
For tendon related knee pain the picture is similarly concerning – repeated steroid injections are associated with tendon weakening and increased risk of rupture. This is now reflected in clinical guidelines which recommend limiting corticosteroid injections for tendinopathy.
How Prolotherapy Works for Knee Pain
Prolotherapy uses a completely different mechanism. Rather than suppressing inflammation it uses the inflammatory healing cascade to stimulate repair. A small volume of natural dextrose solution is injected precisely into the damaged ligaments, tendons and soft tissue structures of the knee under ultrasound guidance.
The dextrose triggers a localised controlled inflammatory response – the body recognises the injection and responds by laying down new collagen fibres, strengthening the damaged structures from within.
As the damaged tissue is repaired and the structural integrity of the knee is restored the pain reduces – not because the signal has been suppressed but because the underlying cause has been addressed. This is why Prolotherapy for knee pain results tend to last rather than wearing off like steroid injections.
What Does the Evidence Show?
The published evidence for Prolotherapy for knee pain has grown significantly over the past two decades. Key studies include:
- Rabago et al – Annals of Family Medicine 2013 – a randomised controlled trial demonstrating significant and sustained improvement in knee osteoarthritis pain and function with dextrose Prolotherapy compared to saline and exercise controls at 52 weeks.
- Reeves and Hassanein – Alternative Therapies in Health and Medicine 2000 – a double blind randomised controlled trial showing significant improvements in knee pain, swelling and range of movement with dextrose Prolotherapy for knee osteoarthritis.
- A double blind RCT comparing 5% dextrose against corticosteroid injection demonstrated significantly better outcomes for dextrose at six months and beyond – with corticosteroid producing superior short term relief but dextrose producing more durable structural improvement.
All of these papers are searchable on PubMed.
Prolotherapy vs Steroid Injections – A Direct Comparison
- Mechanism: Steroid – suppresses inflammation. Prolotherapy – stimulates repair.
- Duration of relief: Steroid – typically 6 to 12 weeks, diminishing with repetition. Prolotherapy – progressive structural improvement lasting months to years.
- Effect on tissue: Steroid – accelerates cartilage and tendon breakdown with repeated use. Prolotherapy – stimulates new collagen and tissue repair.
- Number of injections: Steroid – typically unlimited repetition, each less effective than the last. Prolotherapy – typically three to six sessions producing cumulative structural improvement.
- Surgical outcomes: Steroid – repeated injections associated with worse surgical outcomes. Prolotherapy – no negative impact on surgical outcomes if surgery is subsequently required.
When Is Prolotherapy the Better Choice?
Prolotherapy is particularly well suited for:
- Knee osteoarthritis – where repeated steroid injections have provided diminishing relief
- Ligament laxity and knee instability – where the underlying structural problem is ligamentous rather than purely inflammatory
- Meniscal tears and ligament damage – where tissue repair rather than symptom suppression is needed
- Patients wanting to avoid or delay knee replacement surgery
- Patients for whom steroid injections are contraindicated or have been ineffective
We Combine Prolotherapy with Prolozone for the Best Outcomes
At Proback we rarely use Prolotherapy in isolation for knee pain. We combine it with Prolozone – which adds medical grade ozone to the injection, dramatically improving oxygenation and circulation within the joint and stimulating the body’s regenerative process at a cellular level.
For arthritic and degenerative knee presentations this combination consistently produces better outcomes than either treatment alone.
Pricing and Next Steps
Our initial consultation is currently on special offer at £110 – reduced from £270 – and includes a full clinical examination, standing X-rays where required and a dedicated results appointment where your findings and a personalised treatment plan are explained in full before you commit to anything further.
Both knees treated together in one session – £360. First area £275, each additional area £85. 15% discount when prepaying for a full course upfront.
Give us a call on 0207 976 6648 or email victoria@proback.co.uk.
Proback Clinic, 4 Evelyn Mansions, Carlisle Place, Victoria, London SW1P 1NH. Five minutes from Victoria station.
