Knee osteoarthritis (OA) is one of the most common causes of knee pain, stiffness and reduced mobility. For many people, symptoms can significantly impact exercise, work, sport and everyday activities.
As a result, patients often ask the same question:
“What is the best injection for knee osteoarthritis?”
The answer is that there is no single injection that is right for everyone.
The most appropriate treatment depends on several factors, including the severity of arthritis, the level of pain and disability, your activity goals, and whether you are looking for short-term symptom relief or a longer-lasting solution.
At Pro Sports Medicine in Cardiff, our Sports Medicine and Physiotherapy team provide a comprehensive assessment to help determine the most appropriate treatment pathway. We offer a range of evidence-based injection therapies, from corticosteroid injections through to advanced regenerative and implant technologies.
Before considering any injection, it is important to understand the cause of your symptoms.
Not all knee pain is caused by osteoarthritis. Meniscal injuries, tendon disorders, bursitis and inflammatory conditions can often mimic arthritis symptoms.
Our assessment process may include:
Comprehensive clinical examination
Diagnostic ultrasound imaging
Review of previous MRI or X-ray investigations
Functional assessment and rehabilitation planning
This ensures patients receive the right treatment for the right diagnosis.
Acute pain flare-ups
Significant inflammation
Swollen arthritic joints
Short-term symptom relief
Corticosteroid injections remain one of the most effective options for reducing inflammation and rapidly improving symptoms.
Many patients experience significant pain relief within days, allowing them to engage more effectively in physiotherapy and rehabilitation.
However, corticosteroid injections are generally considered a short to medium-term solution and may not provide long-lasting symptom control in more advanced osteoarthritis.
Hyaluronic acid acts as a natural lubricant and shock absorber within healthy joints.
As osteoarthritis progresses, the quality and quantity of natural hyaluronic acid within the knee can diminish.
At Pro Sports Medicine we offer two specialist hyaluronic acid products depending on the severity of arthritis.
Mild to moderate knee osteoarthritis
Active individuals
Early degenerative joint changes
Synovial® is designed to improve joint lubrication, reduce pain and improve function. It is often an excellent option for patients looking to remain active and potentially delay progression of symptoms.
Moderate to severe osteoarthritis
More advanced cartilage degeneration
Patients requiring greater joint support
Sinogel® combines high molecular weight hyaluronic acid with advanced viscoelastic properties designed to improve shock absorption and joint function in more advanced cases.
Many patients report improvements in pain, walking tolerance and overall mobility following treatment.
Mild to moderate osteoarthritis
Active patients
Patients seeking a biological treatment approach
PRP involves using a concentrated sample of your own blood platelets which contain growth factors believed to support healing and tissue repair.
PRP is commonly used in sports medicine and has growing evidence supporting its use in selected patients with knee osteoarthritis.
Unlike steroid injections, PRP aims to influence the biological environment within the joint rather than simply reducing inflammation.
Moderate to severe knee osteoarthritis
Long-term symptom management
Patients looking to delay knee replacement surgery
Arthrosamid® is an innovative non-biodegradable hydrogel injection delivered at Pro Sports Medicine by Consultant Orthopaedic Surgeon Mr Andrew Miller.
The hydrogel integrates within the synovial lining of the knee and has demonstrated sustained symptom improvement for many patients.
It has become an increasingly popular option for patients seeking a longer-lasting alternative to traditional injections.
Severe knee osteoarthritis
Patients awaiting knee replacement surgery
Patients unable or unwilling to undergo surgery
KioMedine® is one of the newest developments in osteoarthritis treatment.
Unlike traditional injections, KioMedine acts as a medical implant within the joint. It is specifically designed for patients with advanced arthritis and aims to improve pain, mobility and quality of life.
For many patients facing long orthopaedic waiting lists, KioMedine may provide an important non-surgical treatment option.
The best injection depends on your individual circumstances.
| Treatment | Mild OA | Moderate OA | Severe OA | Duration Potential |
|---|---|---|---|---|
| Steroid | Excellent | Good | Moderate | Short to Medium |
| Synovial® | Excellent | Good | Limited | Medium |
| Sinogel® | Good | Excellent | Moderate | Medium |
| PRP | Excellent | Good | Limited | Medium to Long |
| Arthrosamid® | Limited | Excellent | Excellent | Long |
| KioMedine® | Limited | Good | Excellent | Long |
No single treatment is appropriate for every patient.
The most successful outcomes occur when injection therapy is combined with expert rehabilitation, strength training, weight management and activity modification where required.
Our clinicians work within professional and elite sport and bring the same diagnostic and treatment standards used with professional athletes to every patient.
Patients have access to:
As the Official Sports Medicine Partner to Cardiff Rugby, we provide a complete pathway from diagnosis through to treatment and rehabilitation.
If you are struggling with knee pain or have been told you have osteoarthritis, our team can help determine which treatment option may be most appropriate for you.
Book an assessment at Pro Sports Medicine Cardiff and explore the full range of evidence-based injection therapies available for knee osteoarthritis.
