“Amazing result. I had surgery in the afternoon and walked out without pain late afternoon. Two weeks later the stitches are out, swelling reduced and normal knee function restored. A master craftsman and highly recommended.”

“Excellent service - always on time for the appointment. Problem well explained and treatment excellent during the operation and time spent in the hospital. Follow up treatment with consultant and physiotherapists also excellent.”

“Having your knee replaced is a very painful procedure but I've worked hard at getting back to normal and I do feel that the fabulous surgery was an integral part of my speedy recovery. Mr. Bradbury is a super surgeon! He does an amazing job.”

“Mr. Bradbury is an excellent surgeon. He has now fixed both of my knees. The whole hospital experience is amazing and will always be my first choice for any future surgical procedures.”

“Just thought I would let you know that I had a very successful weeks skiing in Verbier and got back last weekend. Weather fantastic and knee held up very well. Many, many thanks.”

“I couldn't ask for a better surgeon than Neil, he has honestly changed my life in 1 year and I can't thank him enough.”

“I would sincerely like to thank you and your team for the work you did on my knee after the x-ray revealed a 'nasty' break. Your expertise has given me back the use of this leg and I can now walk unaided for half a mile or more. The previous knee operation has also been a complete success.”

“The process from start to finish was smooth and efficient. I always knew where I was in the process, what to expect and when. A thoroughly professional service with a smile.”

“Pre-op information first class. Post-op conditions also first class. Very successful operation.”

Knee replacement (partial) surgery

Knee replacement (partial) surgery


The knee joint includes the patella, the lower end of the femur and the upper tibia, all are enclosed within the same sleeve of synovial membrane and supported by the surrounding ligaments and muscles. Functionally there are three separate compartments: the patellofemoral joint between the deep surface of the patella and the front of the femur; the medial compartment between the medial femoral condyle and the medial tibial plateau on the inner aspect of the knee; and the lateral compartment between the lateral femoral condyle and the lateral tibial plateau on the outer aspect of the knee.

Osteoarthritis can affect one, two or all three of these joint compartments to a greater or lesser degree. As a result of this we can choose to replace just the affected part of the joint in about 50% of cases of osteoarthritis rather than the whole joint. The big advantage of this is that it is a smaller operation than a total knee replacement, with less blood loss and a shorter stay in hospital. It also results in a more normal feel to the knee and better overall function.

Partial replacements of just one compartment are called uni-compartmental knee replacements; two compartments – bi-compartmental knee replacements and three compartments – total knee replacements.

Resurfacing rather than replacement

The procedure of uni-compartmental or bi-compartmental knee replacement is more of a resurfacing procedure rather than a replacement, although the word replacement is still most commonly used. In effect a relatively thin layer of bone and cartilage is removed no thicker than 9 mm in most cases from the affected surfaces and replaced with a ceramic on metal surface with a plastic or high density polyethylene bearing. It is important to realise that during a UKR there is always the potential for the surgeon to have to switch to a total knee replacement for technical reasons if the knee is just not suitable for a partial knee procedure. Your surgeon will discuss this with you during consultation. Generally speaking partial knee replacements are not suitable for patients with inflammatory conditions arthritis such as rheumatoid arthritis.