Can PRP therapy help you avoid knee surgery?
Knee pain is a common issue often linked to injury, arthritis or the natural ageing process. Many patients are now exploring alternatives to surgery, especially when symptoms first begin. Platelet-rich plasma (PRP) therapy, which uses a patient’s own blood to support healing, is growing in popularity.
In this article, consultant orthopaedic surgeon Mr Gareth Stables explains how PRP works, when it may be effective, and how it fits into the wider treatment options for knee conditions.
What is PRP therapy and how does it work?
PRP therapy is a form of regenerative medicine. It involves taking a small sample of your own blood, spinning it in a centrifuge to concentrate the platelets, and then injecting the platelet-rich plasma directly into the affected knee joint.
Platelets contain growth factors that support tissue repair and reduce inflammation. When injected into a damaged joint or tendon, PRP may help relieve pain, improve mobility, and support the body’s natural healing process.
The procedure usually takes less than an hour, and most patients return to normal activities shortly afterwards. Results may take several weeks to become noticeable.
When is PRP most effective?
PRP therapy tends to be most effective in the early or moderate stages of certain knee conditions. These include:
- Mild to moderate osteoarthritis: PRP may reduce inflammation and slow progression, particularly in younger or middle-aged patients with early cartilage wear.
- Tendon or ligament injuries: such as patellar tendinopathy or partial ligament tears, where PRP may support tissue healing and pain relief.
- Meniscal injuries: particularly when surgery is not immediately required.
The number of injections required can vary but usually ranges from one to three, spaced over several weeks.
When might surgery still be needed?
While PRP therapy can be very helpful, it’s not suitable for everyone. In advanced stages of osteoarthritis, where there is significant cartilage loss and joint deformity, PRP is unlikely to provide long-term relief.
In these cases, knee replacement surgery may be the more effective long-term solution. PRP also won’t correct structural problems that require surgical repair, such as:
- Complete ligament tears
- Complex meniscal tears
- Severe bone-on-bone arthritis
A thorough clinical assessment and imaging (X-rays or MRI) are essential to determine the most appropriate treatment pathway.
How PRP fits into a broader knee treatment plan
PRP therapy is best viewed as part of a broader, personalised treatment strategy. It can complement other non-surgical options, such as:
- Physiotherapy to strengthen surrounding muscles and restore function
- Weight management to reduce load on the knee joint
- Pain relief and anti-inflammatory medication to manage symptoms
- Lifestyle and activity modifications to reduce strain on the knee
By combining PRP with these conservative measures, many patients can delay or potentially avoid surgery, especially in the earlier stages of disease.
While it’s not a replacement for surgery in more advanced cases, PRP therapy is a valuable tool in managing certain knee conditions, particularly when applied early and as part of a comprehensive treatment plan.
If you’re experiencing knee pain and are looking for alternatives to surgery, consult with Mr Stables via his Top Doctors profile to determine whether PRP therapy could be right for you.