“You all did so much to relieve my anxiety and concerns with my knee replacement. I shall remember you with gratitude every time I walk the dog in the future. Thank you”

“To speak to medical professionals who specialise in sports injury was a breath of fresh air. The experience for me was the best it could be, especially as an athlete with a potentially career-ending injury. Everyone was caring and I was given the hope I so badly needed. It was now possible that... Read More

“Everything was wonderful. I am now completely pain free and absolutely thrilled.”

“Thank you for the excellent operation you did on my knee. It has healed up really well with only a very small scar left. Most of the acute pain is now gone and each week it pains a little less. I am looking forward to the long (pain free) walks I used to do before. So many thanks, you are the... Read More

“Thank you so much for seeing me and treating me so quickly after my skiing accident! I was amazed and impressed that you managed to arrange my surgery so quickly. Mum and I have a nickname for you - GOD!”

“'Thank you' seems inadequate words for the debt of gratitude I owe you all. Your expertise and skills heal body and soul. Your care and kindness humble me.”

“I felt fully engaged from the start and actually found the whole process quite enjoyable! I felt informed without being patronised, well prepared, both by the consultation with Neil, the paperwork and booklets. The outcome has exceeded my expectations and the care was tremendous, as was the pain... Read More

“Neil performed a PCL replacement in my right knee back in 2000. At the time, it was a procedure that few knee surgeons had the skills to perform. He fully informed me of the risks attached to the procedure, the likelihood of success and allowed me to take my time to decide on how I wished to... Read More

“You fitted me with a completely new knee on 20th June. It is absolutely amazing and I'm getting on and off, riding and jumping with ease. It has brought back all the possibilities in retirement that had come to an end with a bad knee. It's not yet four months since the operation.....lets hope the... Read More

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.