BACK TO KNEE TREATMENTS + CONDITIONS

Hydrogel Injections for Knee Osteoarthritis

Knee Pain

When a patient presents with knee pain, a thorough assessment is required to obtain an accurate diagnosis.  If someone’s knee pain is due to osteoarthritis, then one potential option may be an injection of hydrogel (Arthrosamid®).

Arthrosamid® is a non-surgical treatment used to provide long-lasting pain relief and improved mobility for patients with knee osteoarthritis.

What is Arthrosamid®?

Arthrosamid® is a hydrogel injection that acts within the knee joint, reducing pain and stiffness caused by osteoarthritis. Unlike traditional treatments, this non-degradable hydrogel integrates with the synovial membrane,  decreasing joint stiffness and providing extended relief.

For more information, visit the official Arthrosamid® website.

Potential Benefits of Arthrosamid® Injections

  • Long-lasting pain relief – Helps reduce discomfort caused by osteoarthritis.
  • Improved joint function – Enhances mobility by improving pain.
  • Minimally invasive – A simple outpatient procedure with minimal downtime.
  • Alternative to surgery – May delay the need for surgical intervention.

Is Arthrosamid® Right for You?

Arthrosamid® is suitable for patients with knee osteoarthritis who are experiencing pain, stiffness, or reduced mobility. It may be an option if:

  • You want long-term pain relief without surgery.
  • You have not found sufficient relief from pain medications, physiotherapy, or other injections.
  • You are looking for a low-risk, minimally invasive treatment option.

A consultation with one of our orthopaedic specialists will help determine if Arthrosamid® is the right treatment for you.

It is important to bear in mind that there is no cure for osteoarthritis but successful treatment with Arthrosamid® may reduce or relieve your knee pain. You should also bear in mind that your knee osteoarthritis may not improve and, in some cases, may get worse.

What to Expect – Before, During, and After Treatment

Before the Injection

Your consultant will assess your knee condition, review your medical history and up-to-date imaging, and ensure that Arthrosamid® is suitable for you. Other treatment options will be discussed to allow you to weigh up the risks and benefits so that you can make an informed choice.

Arthrosamid® does not degrade over time and remains in the synovial tissue. It is therefore classified as an implant and antibiotics are prescribed for you to take approximately one hour prior to the injection to reduce the theoretical risk of infection.

During the Procedure

  • The injection is performed in a sterile clinical setting under ultrasound guidance.
  • A local anaesthetic is used to ensure comfort.
  • The Arthrosamid® hydrogel is injected directly into the knee joint.
  • The procedure typically takes less than 30 minutes.

After the Procedure

  • It is recommended that for the first 48 hours you allow time to recover and rest with normal day to day activities.
  • You should avoid any strenuous weight-bearing activities (e.g. running, tennis or long walks) during the first 2 weeks after your injection.
  • We recommend guided physiotherapy as part of your Arthrosamid® recovery — click here find out more about the rehab programme.
  • You may experience mild swelling or discomfort for a few days/week.
  • The full benefits of Arthrosamid® may take a few weeks or in some cases a few months to develop as the hydrogel integrates with the joint.

Why Choose Grosvenor Orthopaedic Partners LLP?

Leading orthopaedic specialists – Our expert team provides the latest non-surgical and surgical treatments for osteoarthritis.

Personalised care – We assess every patient individually and discuss all options to ensure the best treatment plan.

Advanced treatment options – We offer innovative solutions to help you regain mobility and improve your quality of life.

USEFUL DOCUMENTS

Click to download these useful documents

Arthrosamid Patient Brochure 5-year Data
Arthrosamid Patient Rehab booklet

Our Specialists

LEADING KNEE CARE

Our team have broad experience in the successful treatment of a range of knee problems, addressing both young and sports related injuries as well as those relating to trauma, disease process and genetics.

We are well placed to manage and treat a diverse range of knee problems utilising cutting edge diagnostic technology and treatment approaches, both surgical and conservative.

MR MARK WEBB

MR MARK WEBB

CONSULTANT ORTHOPAEDIC HIP + KNEE SURGEON

MR CHETHAN JAYADEV

MR CHETHAN JAYADEV

CONSULTANT ORTHOPAEDIC KNEE SURGEON

MR SIMON HISLOP

MR SIMON HISLOP

CONSULTANT ORTHOPAEDIC HIP + KNEE SURGEON

MR RAN WEI

MR RAN WEI

CONSULTANT ORTHOPAEDIC KNEE SURGEON

DR RAJAT CHOWDHURY

DR RAJAT CHOWDHURY

Consultant Musculoskeletal and Interventional Sports Radiologist

MR LUKE JONES

CONSULTANT ORTHOPAEDIC KNEE SURGEON

DPhil(Oxon), FRCS(Tr&Orth), MB BS, BSc(hons)

Luke is a Consultant Knee Surgeon practising at King Edward VIIs Hospital, Marylebone and Chelsea and Westminster Hospital NHS Foundation Trust. He runs a high volume bespoke specialist knee practice that deals with all aspects of knee surgery from minor sports injuries to complex joint reconstructions. His patient centred, data-driven approach means treatment plans are focused on each patient’s individual needs.

READ MORE

Dr Rajat Chowdhury

Consultant Musculoskeletal and Interventional Sports Radiologist

MA(Oxon) BMBCh(Oxon) MRCS FRCR FBIR

Rajat is a Consultant Musculoskeletal and Interventional Radiologist at Grosvenor Orthopaedics and has an NHS practice at Oxford University Hospitals, where he is Lead of MSK Radiology. He holds an academic position as an Honorary Senior Clinical Lecturer at Oxford University; is Director of Anatomy at The Queen’s College, Oxford; and is also the Radiology Lead for the Musculoskeletal Sciences MSc. at Oxford University. He was expert advisor to the NICE Guideline Committee for Osteoarthritis, was elected to the Council of the British Society of Skeletal Radiologists, and previously sat on the Professional Support and Standards Board at The Royal College of Radiologists.

Rajat specialises in all areas of diagnostic and interventional musculoskeletal radiology. He has a particular interest in sporting injuries and works collaboratively with celebrated opinion-leading clinicians to deliver first-class bespoke care to all his patients, including elite athletes and high-profile individuals.

READ MORE

MR CHETHAN JAYADEV

CONSULTANT ORTHOPAEDIC KNEE SURGEON

MA(Oxon) BMBCh DPhil(PhD) FRCS(Tr&Orth)

Chethan is a Consultant Knee Surgeon practising at the world-renowned Royal National Orthopaedic Hospital Stanmore, Spire Bushey Hospital and King Edward VII’s Hospital. His practice encompasses all aspects of knee surgery, from sports injuries and knee preservation to complex and redo joint replacements. He has a reputation as a thorough, meticulous surgeon offering patients a bespoke and personalised service. He is dedicated to providing the most up-to-date and evidence-based care. Chethan is a strong advocate of patient choice and always puts patients first.

READ MORE

MR MARK WEBB

CONSULTANT ORTHOPAEDIC HIP + KNEE SURGEON

MBBS MSc FRCS (Tr & Orth)

Mr. Mark Webb is a highly skilled Consultant Orthopaedic Surgeon specialising in the management of hip and knee conditions, lower limb trauma, and sports-related injuries. He is dedicated to helping patients achieve their recovery goals, whether through innovative surgical techniques or non-operative treatments. Mr. Webb has extensive training in the latest advancements in orthopaedics, ensuring exceptional care for his patients. 

Mr. Webb believes in a collaborative approach to patient care. He works closely with his patients to fully understand their needs and expectations, empowering them to make informed decisions about their treatment.  

His focus is on delivering tailored care to help patients regain mobility, reduce pain, and return to their active lifestyle.

READ MORE

Mr Ran Wei

Consultant Orthopaedic Knee Surgeon

BSc(Hons), MBChB, MRCS(Eng), FRCS(Tr&Orth)

Ran is a Consultant Knee Surgeon practising at New Victoria Hospital and Kingston & Richmond NHS Foundation Trust. He is focused on delivering outstanding Orthopaedic care that is tailored to each patient’s unique needs. His practice encompasses all aspects of knee surgery, including sports knee injuries (meniscal tears and ligament ruptures), knee joint preservation (including cartilage regeneration), partial knee replacement, total knee replacement and patella stabilisation procedures. He provides compassionate and bespoke care to help patients maintain knee function, restore mobility and improve quality of life.

READ MORE

MR SIMON HISLOP

CONSULTANT ORTHOPAEDIC HIP + KNEE SURGEON

MBBS MSc (Oxon) FRCS (Tr&Orth)

Simon is a Consultant Hip and Knee Surgeon practising at Chelsea and Westminster NHS Foundation Trust, King Edward VII Hospital, the Lister Hospital, and New Victoria Hospital in Kingston. His high volume specialist practice encompasses primary and revision hip and knee replacement surgery, arthroscopic/sports knee surgery, and lower limb trauma. He has a reputation as a thorough, meticulous, and skilled surgeon who always puts patients first, providing tailored treatment plans for a high quality patient journey. 

READ MORE