Mr Gwithyen Silk is a Consultant Orthopaedic Surgeon specialising in knee surgery and lower limb arthroplasty. He provides expert diagnosis and treatment for a wide range of knee conditions, including knee pain, injuries, and arthritis. His approach combines modern surgical techniques, including robotic knee surgery with personalised, patient-centred care.

He was appointed as a Consultant Orthopaedic Surgeon in 2025. Alongside his private practice, he works at Northampton General Hospital, where he specialises in knee replacement surgery, lower limb arthroplasty, and soft tissue knee surgery. He sees NHS, private, and insured patients at Three Shires Hospital in Northamptonshire.

Training and experience

Mr Silk trained at the University of Cambridge and the University of Edinburgh. He completed his orthopaedic training in the South-West of England before undertaking advanced fellowship training in knee surgery and sports knee injuries.

His fellowship training included:

• Fortius Sports Injury and Arthroplasty Clinic, London
• Royal Orthopaedic Hospital, Birmingham

During this time, he trained with world famous and internationally recognised specialists in knee replacement, ligament reconstruction, and joint preservation surgery.

In 2023, he was awarded the Dutch Travelling Knee Fellowship, gaining experience from leading knee surgeons in the Netherlands. He also spent time at the KNVB campus (the Dutch National Football training centre), developing expertise in sports injury management, injury prevention, and rehabilitation for athletes.

Clinical expertise

Mr Silk specialises in diagnosing and treating a wide range of knee conditions and injuries, including:

• Knee arthritis and degenerative knee conditions
• Meniscal injuries (cartilage tears)
• Sports-related knee injuries
• Ligament injuries, including ACL tears
• Patellofemoral (anterior knee) pain
• Complex knee pain

He providesboth non-surgical andsurgical treatment options, ensuring care is tailored to each patient’s needs.

Surgical expertise

Mr Silk has specialist expertise in advanced knee surgery, including:

• Knee arthroscopy (keyhole knee surgery)
• Ligament reconstruction, including ACL surgery
• Cartilage repair procedures
• Partial knee replacement
• Total knee replacement surgery

He is trained in robotic-assisted knee replacement surgery and holds certification in VELYS™, MAKO, and ROSA systems.

At Three Shires Hospital, VELYS™ robotic-assisted technology is available to support knee replacement procedures. This system is used to improve surgical precision and help optimise outcomes for patients undergoing joint replacement surgery.

Recovery and rehabilitation

Mr Silk focuses on helping patients recover quickly and safely following treatment. His approach aims to:

• Reduce pain
• Restore movement and joint function
• Support return to normal daily activities and sport

He uses enhanced recovery pathways and physiotherapy-led rehabilitation programmes to improve recovery after knee surgery.

Research, teaching and professional development

Mr Silk is actively involved in orthopaedic research and training. His work has been published in peer-reviewed journals, and he regularly presents at national and international orthopaedic meetings.

He is committed to delivering evidence-based orthopaedic care and staying up to date with the latest developments in knee surgery and joint replacement.

Understanding sports injuries

As a lifelong sportsman, Mr Silk has competed in rowing, rugby, swimming, and endurance running. This gives him a strong understanding of sports injuries, rehabilitation, and return to performance, which helps him support active patients effectively.

Patient care

Mr Silk is committed to delivering high-quality, patient-centred care. He focuses on clear communication, ensuring that patients understand their diagnosis, treatment options, and recovery process.
His aim is to provide effective treatment for knee pain and injuries, helping patients regain mobility and return to the activities they enjoy.

Areas of interest

• Knee pain and knee injuries
• Meniscal (cartilage) damage
• Sports knee injuries
• Anterior knee pain
• Cartilage repair
• Knee arthroscopy (keyhole surgery)
• Degenerative knee disease and arthritis
• Knee replacement surgery
• Lower limb arthroplasty
• Ligament reconstruction (ACL surgery)
• Robotic-assisted knee replacement
• Partial knee replacement

Clinical Interests 

Robotic-assisted knee replacement

Robotic-assisted knee replacement combines advanced imaging, computer planning, and precision-guided technology to support accurate implant positioning and soft tissue balancing during surgery.

Mr Gwithyen Silk is certified in VELYS™, MAKO, and ROSA robotic systems and offers robotic-assisted total and partial knee replacement for suitable patients with knee arthritis.

At Three Shires Hospital, VELYS™ robotic-assisted technology is available to support knee replacement procedures.

Potential benefits of robotic-assisted surgery may include:

• Greater surgical precision
• Improved implant positioning
• Enhanced soft tissue balancing
• Faster early recovery for some patients
• Improved patient satisfaction
• Personalised surgical planning

All patients undergo a comprehensive assessment to determine whether robotic-assisted surgery is the most appropriate treatment.

Total knee replacement

Total knee replacement is a well-established procedure used to relieve pain and improve function in patients with knee arthritis.

Mr Silk performs total knee replacement using modern surgical techniques, with a focus on:

• Reducing pain
• Improving mobility
• Restoring joint function
• Surgery may be considered when:
• Knee pain limits everyday activities
• Conservative treatments are no longer effective
• Sleep is disrupted by pain
• Walking distance becomes restricted
• Quality of life is significantly affected

He provides comprehensive pre-operative assessment, clear patient education, and structured rehabilitation to support recovery and long-term outcomes.

Partial knee replacement

For patients with arthritis affecting only one part of the knee, partial knee replacement may be an appropriate alternative to total knee replacement.

Potential advantages include:

• Smaller surgical procedure
• Preservation of healthy bone and ligaments
• More natural knee movement
• Faster recovery
• Less post-operative discomfort

Mr Silk has extensive training in this technique and carefully assesses whether it is suitable for each individual patient.

ACL reconstruction and sports knee injuries

Anterior cruciate ligament (ACL) injuries commonly occur during activities involving twisting, pivoting, or sudden changes in direction.

Mr Silk provides specialist assessment and treatment for:

• ACL injuries
• Meniscal tears
• Cartilage injuries
• Patellar instability
• Multi-ligament knee injuries
• Sports-related knee pain

Treatment is tailored to each patient’s age, activity level, and goals. Where surgery is required, modern reconstruction techniques are combined with structured rehabilitation programmes to support a safe return to activity.

Meniscal surgery

The meniscus acts as a shock absorber within the knee and can be damaged through injury or age-related degeneration.

Common symptoms include:

• Pain
• Swelling
• Locking or catching
• Instability
• Reduced activity levels

Mr Silk offers expert assessment and management of meniscal injuries. Where possible, meniscal preservation and repair are prioritised to support long-term knee health. If repair is not suitable, minimally invasive arthroscopic (keyhole) surgery may be used to relieve symptoms and restore function.

• GMC: 6120427
• Fellow of the Royal College of Surgeons
• British Association for Surgery of the Knee