Arthrosamid® Injections for Knee Osteoarthritis in Cardiff

At Pro Sports Medicine, we offer Arthrosamid® Hydrogel Injections as part of our specialist Regenerative Medicine Clinic for patients suffering with knee osteoarthritis.

Delivered in partnership with Consultant Orthopaedic Surgeon Mr Andrew Miller, Arthrosamid® is an advanced injectable hydrogel treatment designed to reduce knee pain, improve mobility and help patients stay active for longer without surgery.

For individuals struggling with ongoing knee pain, stiffness and reduced function, Arthrosamid® offers an innovative alternative to repeated steroid injections or early knee replacement surgery.

What is Arthrosamid®?

Arthrosamid® is an innovative injectable hydrogel implant developed specifically for the treatment of knee osteoarthritis (OA).

Unlike traditional injections that are gradually broken down and absorbed by the body, Arthrosamid® is a non-biodegradable hydrogel consisting of 97.5% water and 2.5% cross-linked polyacrylamide. Once injected into the knee joint, it integrates within the synovial lining of the joint capsule, creating a cushioning effect that can reduce pain and improve knee function for several years.

The treatment is designed to provide long-lasting symptom relief from mild to moderate knee osteoarthritis and may help delay the need for surgical intervention.

How Does Arthrosamid® Work?

Knee osteoarthritis causes degeneration of joint cartilage alongside irritation and inflammation within the joint lining (synovium).

Arthrosamid® works differently from steroid or hyaluronic acid injections.

Following injection, the hydrogel becomes integrated into the synovial membrane, helping to:

• Cushion the knee joint
• Improve lubrication
• Reduce friction within the joint
• Decrease inflammation
• Improve mobility and function
• Reduce pain during daily activities

Because the hydrogel remains within the joint tissue, symptom relief can be significantly longer lasting than many conventional injection therapies.

Clinical studies have demonstrated sustained improvements in pain and function beyond two years, with emerging evidence showing benefits extending up to five years in selected patients.

Who is Arthrosamid® Suitable For?

Arthrosamid® may be appropriate for patients who:

• Have mild to moderate knee osteoarthritis
• Experience ongoing knee pain and stiffness
• Wish to remain active and delay surgery
• Have not achieved adequate relief from physiotherapy, exercise or medication
• Have previously had steroid or hyaluronic acid injections with limited long-term benefit
• Are not currently ready for knee replacement surgery

Every patient attending our Regenerative Medicine Clinic undergoes a comprehensive assessment to determine whether Arthrosamid® is the most appropriate treatment option.

What Happens During the Procedure?

At Pro Sports Medicine, Arthrosamid® injections are performed by Consultant Orthopaedic Surgeon Mr Andrew Miller.

The procedure is carried out as a simple outpatient treatment and typically takes around 15–30 minutes.

Your treatment will include:

1. Clinical assessment and suitability review
2. Local anaesthetic to improve comfort
3. Ultrasound-guided injection into the knee joint
4. Short observation period before discharge

Patients are usually able to return home shortly after treatment and can resume light activities within the following days.

Meet Our Arthrosamid® Specialist

Mr Andrew Miller – Consultant Orthopaedic Surgeon

We are proud to work alongside Mr Andrew Miller, Consultant Orthopaedic Surgeon, who delivers Arthrosamid® Hydrogel Injections at Pro Sports Medicine.

Mr Miller specialises in the management of knee conditions and osteoarthritis and has extensive experience in advanced injection therapies designed to help patients reduce pain, improve function and maintain an active lifestyle.

By combining specialist orthopaedic expertise with Pro Sports Medicine’s advanced rehabilitation and sports medicine services, patients benefit from a comprehensive, evidence-based approach to managing knee osteoarthritis.

Why Choose Pro Sports Medicine for Arthrosamid® Injections?

At Pro Sports Medicine, we provide specialist musculoskeletal and regenerative medicine services trusted by professional athletes and active individuals across Wales and the South West.

Our integrated approach combines:

• Consultant-led care
• Advanced diagnostic ultrasound
• Sports medicine expertise
• Physiotherapy-led rehabilitation
• Strength and conditioning support
• Evidence-based regenerative medicine treatments

As the Official Sports Medicine Partner to Cardiff Rugby, our clinicians operate within elite performance environments and bring the same standards of assessment, diagnosis and treatment to every patient.

Frequently Asked Questions

How long does Arthrosamid® last?

Clinical evidence has demonstrated significant improvements in pain and function for multiple years following a single injection, with studies reporting benefits beyond two years and up to five years in some patients.

Is Arthrosamid® painful?

The procedure is performed using local anaesthetic and is generally very well tolerated.

When will I notice improvement?

Many patients begin to experience symptom improvement within the first few weeks following treatment, although individual responses vary.

Can Arthrosamid® prevent knee replacement surgery?

While Arthrosamid® does not reverse osteoarthritis, it may help reduce symptoms and delay the need for knee replacement surgery in appropriately selected patients.

Is Arthrosamid® suitable for severe arthritis?

The treatment is generally most effective in patients with mild to moderate knee osteoarthritis. A specialist consultation is required to determine suitability.

Book an Arthrosamid® Consultation in Cardiff

If knee osteoarthritis is limiting your activity levels, exercise or quality of life, our team can help determine whether Arthrosamid® Hydrogel Injection therapy is the right option for you.

Book a consultation with our Regenerative Medicine Clinic today and explore advanced, non-surgical solutions for long-lasting knee pain relief.

Pro Sports Medicine
Cardiff’s Specialist Sports Medicine & Regenerative Medicine Clinic.