Mr Samuel Rajaratnam

Consultant Orthopaedic Surgeon

Mr Sam Rajaratnam

Mr Samuel Rajaratnam

Medical qualifications

MB BS, BSc, FRCS(Tr & Orth)

Year of qualification

1997

Medical Secretary
Sharon Hanks
T: 01892 362678
M: 07399 535752
E: sharon.hanks@horder.co.uk
Private Patient Services
T: 01892 317572

Professional profile

Mr Sam Rajaratnam is a leading consultant orthopaedic surgeon specialising exclusively in knee surgery at The Horder Centre and The Cleveland Clinic, London. Mr Rajaratnam trained at Guy’s and St Thomas’s Hospital in London and qualified with a First-Class degree in Anatomy and an MBBS in 1997.

He then received further higher surgical training with the Royal College of Surgeons of England at numerous centres of excellence in the UK and fellowship training in knee injury treatment in Sydney, Australia. 

Knee Replacement 

Mr Rajaratnam is an internationally recognised knee replacement surgeon. He is passionate about improving outcomes for patients following surgery and achieving a faster and less painful recovery.  

The NJR (National Joint Registry) regularly publishes data on joint replacement surgery, closely monitoring hospital performance and consultant specific outcomes. Mr Rajaratnam has exceptionally high outcomes in the UK and amongst the lowest revision rate (failure rate) for knee replacement surgery as evidenced by the NJR over the last 15 years.

View Mr Rajaratnam’s NJR profile here 

Rapid recovery and innovation 

Mr Rajaratnam has championed the concept of ‘rapid recovery and enhanced pain relief’ following knee replacement surgery and lectures internationally on the subject. His latest innovations in this field have been carefully developed over his extensive career and include a shorter operating time, advanced surgical techniques, multimodal anaesthesia, the use of local anaesthetic infusions to make knee replacement surgery less painful, elite rehabilitation with leading physiotherapists around the country and ROSA Robotic assisted knee surgery. 

He has assembled a team of intensive care consultants, anaesthetists, specialist nurse practitioners, sports and exercise medicine consultants and physiotherapists to work together as a team throughout a patient’s recovery, to reduce pain and discomfort after knee surgery. 

The latest joint replacement techniques he performs also include both partial and full replacements and the use of patient-specific 3D customised alignment methods for accurate fitting of knee implants when necessary. 

Robotic knee replacement surgery

He is also an international authority on robotic knee replacement surgery and the ROSA® Knee System (from Zimmer Biomet). Having successfully implemented the first commercially active ROSA® Knee System for robotically assisted knee replacement surgery in the UK in December 2020, he then introduced the ROSA system to The Horder Centre in August 2022 with great success.

Mr Rajaratnam regularly trains other surgeons from around the world on this technique, including at The Horder Centre and The Schoen Clinic which are visitation centres. 

Treatment of soft tissue knee injury 

Mr Rajaratnam is a fellowship-trained soft tissue knee surgeon and treats numerous professional and amateur sportsmen and women with soft tissue knee injuries. He has an interest in day case ACL reconstructions and has performed over 1500 ACL reconstructions in his career, where patients are able to comfortably walk out of hospital within six hours of their operation. He is one of the chosen surgeons for the Professional Football Association (PFA) and is on the Isokinetic FIFA Football Medicine Conference faculty each year.

He is excited about the advances in stem cell and biological solutions for treating appropriate cartilage defects in the knee but is very careful in selecting the appropriate patient for each new technique, to practice proven and transparent evidence-based medicine.

Current memberships

Fellow of the Royal College of Surgeons of England
Member of the British Orthopaedic Association

Mr Sam Rajaratnam

Mr Samuel Rajaratnam

Medical qualifications

MB BS, BSc, FRCS(Tr & Orth)

Year of qualification

1997

Contact Us

Medical Secretary
Sharon Hanks
T: 01892 362678
M: 07399 535752
E: sharon.hanks@horder.co.uk
Private Patient Services
T: 01892 317572

Additional information

Awards

Sam trained at Guy’s and St Thomas’s Hospital in London and qualified with a First Class degree in anatomy and an MBBS in 1997.
Further training via the Royal College of Surgeons, England at numerous centres of excellence in the U.K. and Australia.
In 2006 Sam was awarded the Walter Mercer Gold Medal for the best performance throughout Great Britain and Ireland in the final FRCS orthopaedics examination.
British Orthopaedic Association Ambassador to Hong Kong in 2007 working in Sydney, Australia, at some of the world’s best knee injury units.
Appointed as a Consultant Surgeon in the U.K. in 2008, and now enjoys an excellent national reputation as a leading knee surgeon.
He was previously the Director of Orthopaedics at the Schoen Clinic London and is now based between The Horder Centre, in Crowborough, and the Cleveland Clinic London.
Sam lectures internationally on advances in knee replacement surgery, robotics and innovations in pain relief and rapid recovery following knee surgery.

Patient stories: Glen Noot

In this video Consultant Orthopaedic Surgeon Mr Sam Rajaratnam follows up with a patient 6 weeks after his second knee replacement. Mr Glen Noot had suffered from constant pain for the past two years. Following joint replacement surgery on both knees, Mr Noot is now able to go back to work, play golf and enjoy life pain-free.


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