MB BS, BSc, FRCS(Tr & Orth)
29 years of experience
Belgravia, SW1X 7HY
(+2 more)
52 connections in healthcare
Skill endorsed
by Mr Andrew Skyrme, Mr Barry Rose and 9 other professionals
29 years of experience
Belgravia, SW1X 7HY
(+2 more)
52 connections in healthcare
Skill endorsed
by Mr Andrew Skyrme, Mr Barry Rose and 9 other professionals
Areas of expertise
Contact
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Mr. Sam Rajaratnam FRCS (Tr. & Orth.) is an internationally renowned Consultant Orthopaedic Surgeon particularly specialising in knee replacement surgery and sporting injuries of the knee.
Mr Rajaratnam practices exclusively at the Cleveland Clinic, London - the leading and award winning private hospital in Belgravia .
Sam has personally performed over 9000 knee replacements (approximately 600 Partial, Total, Robotic and Revision Knee Replacements each year) with excellent outcomes and has pioneered rapid recovery and lower post operative pain following knee surgery.
He has developed an expert multidisciplinary team with Anaesthetist Dr. Barry Phillips to deliver excellent care and the latest pain-relieving techniques after Joint Replacement Surgery.
He also has one of the Lowest Revision (failure) rates and best outcomes after knee replacements on the U.K. National Joint Registry and is a huge advocate for transparent outcome measure-driven healthcare.
He is an expert on Robotic assisted Knee replacement and was the first to implement ROSA robotic technology in the U.K. within the private sector.
Sam also regularly treats numerous Professional and Amateur sportsmen with soft tissue injuries to their knee and has performed over 3000 ACL reconstructions and performs many other soft tissue knee procedures each year as Day case procedures.
He regularly treats high profile individuals and elite professional sportsmen and sportswomen including footballers, rugby players and boxers and is on the faculty of the FIFA Football Medicine conference each year.
Mr Rajaratnam originally 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 trained via the Royal College of Surgeons, England at numerous centres of excellence in the U.K. and then Australia.
Sam was awarded the “Walter Mercer Gold Medal” for his best performance throughout Great Britain and Ireland in the final FRCS Orthopaedics examination in 2006.
He was the British Orthopaedic Association Ambassador to Hong Kong in 2007 and worked in Sydney Australia at some of the world’s best knee injury units before being appointed Consultant Surgeon in the U.K. in 2008 and now enjoys an excellent international reputation as a leading knee surgeon and a key opinion leader in his field.
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General Medical Council
No. 4438098
University of London
Medicine
Graduated 1997
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 trained via the Royal College of Surgeons, England at numerous centres of excellence in the U.K. and then Australia.
Sam was awarded the "Walter Mercer Gold Medal" for the best performance throughout Great Britain and Ireland in the final FRCS Orthopaedics examination in 2006.
He was the British Orthopaedic Association Ambassador to Hong Kong in 2007 and worked in Sydney Australia at some of the world's best knee injury units before being appointed Consultant Surgeon in the U.K. in 2008, and now enjoys an excellent international reputation as a leading knee surgeon and a key opinion leader in his field.
New appointment
£395Follow-up appointment
£36533 Grosvenor Place, Belgravia, United Kingdom, SW1X 7HY
24 Portland Pl, London, United Kingdom, W1B 1LU
Cleveland Clinic Moorgate Outpatient Centre, 55 Moorgate, London, United Kingdom, EC2R 6BH
Areas of expertise
Contact
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This summary was created by AI based on recent reviews
Mr Samuel Rajaratnam is excellent and professional, putting patients at ease with his reassuring and clear explanations. Patients report highly successful outcomes for procedures like knee replacement and arthroscopy, often experiencing minimal pain and rapid recovery. He leads an outstanding team, with anaesthetist Barry Phillips and nurse Christine Howis providing attentive pre-operative and post-operative care. The practice aims to restore patient mobility and alleviate persistent knee discomfort.
Mr Rajaratnam, is friendly, professional and extremely knowledgeable in his field. Would highly recommend.
The temperature on July 30th was high and made for a very stressful journey to the Cleveland Clinic in Grosvenor Place. There had been a direct admission of a patient from Clinic to Hospital prior to my allocated time which made for a longer wait than expected a whole hour in fact. But when I saw Mr. Rajaratnam I was not hurried at all and I felt I had a very thorough Consultation. He is a very experienced knee specialist and I feel sure that if I go through with more replacement knee surgery then I am confident that in the hands of this Surgeon I will be safe.
A review and consultation on a knee injury sustained in 1979 as well as the affect (caused by a change in gait) on the other knee..
An excellent surgeon. Really knows his field. Pain management and recovery were excellent. Liked the holistic approach and the fact that the team have worked together a long time making the experience seamless.
I am, today, ten weeks post L total L knee replacement. I am recovering very well and I’m delighted that when I was looking for a surgeon to perform my operation that I discovered Sam. Sam is very experienced and has excellent results. He also uses the latest evidence based techniques and equipment. When I met him in his clinic to review my X-rays and MRI scan he was extremely patient and reassuring; giving detailed explanation as to the options and answering my questions. He informed me that he could perform the operation in May and I was booked in. The team perform all necessary blood tests for the pre-op assessment at that consultation which means you don’t have to travel to London again until the operation. The other reason that I chose Sam was because of his team based approach. This really became evident from the beginning as he introduced me to an excellent physio in my local area (Lucy Rix) who has worked with Sam before. She saw me for pre-op physio and post op (initially at home, then in her clinic). His team in hospital consists of Drs Barry Phillips (anaesthetist) and Ari Johar (medical consultant). They ensure the most fantastic up to date management of pain, nausea, sleep etc so that I had well controlled pain post op. Nursing care is overseen by nurses Christine. Andrea and Magdalena. In hospital. They also provide support post discharge by ‘phone which is so helpful following discharge home for any queries or reassurance. I used this support a couple of times which was invaluable. My experience of the actual operation and post op care in hospital ...
Read moreI’ve had previous knee replacement with Mr Rajaratnam, complete confidence in him and his team, returning for the other knee.
He was very easy to talk to and gave excellent advice and happy to answer all our questions.
A jolly man who certainly knew his job. I had waited so long that I was somewhat stunned by the time I saw him. I got what I assume was very good advice
I was explained everything in great detail and was able to book my operation and have my swabs and bloods taken that day to save me coming back . The staff who took my ECG and bloods were fantastic and all was very well organized.
BEST KNEE SURGEON IN LONDON
07 Oct 2025
Mr Andrew Skyrme
Orthopaedic SurgeonExcellent knee surgeon
20 Apr 2025
Mr Barry Rose
Orthopaedic SurgeonTop of his field
31 Mar 2025
Professor Alister Hart
Orthopaedic Surgeon
Mr David Cumming
Orthopaedic Surgeon
Read articles from Mr Samuel Rajaratnam explaining process of procedures and other important things you should know before choosing your provider.

Common causes, symptoms and when to seek medical advice for back of knee pain
24 February 2026
samrajaratnam.com

Knee pain is a common problem. In the UK today about one-third of over 50-year-olds suffer from it from time to time. However, only about one-third of these people visit their GP for a consultation about their knee pain, the vast majority preferring to self-medicate or ignore the situation. In the case of minor knee problems, of a temporary nature, this may be a reasonable reaction, but with persistent pain on a long term basis, there is the danger of a serious underlying problem which may get worse if treatment is delayed.
24 February 2026
samrajaratnam.com

Hearing a clicking or clunking noise after knee replacement surgery can be worrying. Many patients fear that something is loose or that their artificial knee is failing. The good news is that, in most cases, a clicking knee replacement is entirely normal and not a cause for concern. This article explains why knee replacements click, when it is normal, when it may indicate a problem, and what to do if you are concerned — particularly if you have had knee replacement surgery for knee osteoarthritis.
24 February 2026
samrajaratnam.com
What are Mr Samuel Rajaratnam's reviews like?
Mr Samuel Rajaratnam's overall patient rating is 4.97 out of 5 stars on Doctify. This is based on 337 reviews.
What languages does Mr Samuel Rajaratnam speak?
Mr Samuel Rajaratnam speaks English
Where is Mr Samuel Rajaratnam located?
Mr Samuel Rajaratnam primarily practices at Cleveland Clinic London, located at 33 Grosvenor Place, Belgravia, United Kingdom, SW1X 7HY
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Does Mr Samuel Rajaratnam accept new patients?
Mr Samuel Rajaratnam generally accepts new patients.
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