Total knee replacement

A total prosthetic replacement of the knee joint is a surgical procedure during which the knee is replaced with a prosthetic, or artificial, joint made from metal or plastic. Also called a knee arthroplasty, this surgical procedure is used to replace damaged, diseased or diminished knee joints.

What is knee replacement surgery?

A total knee replacement is a surgical procedure in which the worn or damaged surfaces of your knee joint are removed and replaced with smooth, artificial components. These components are carefully shaped to fit your knee and designed to move like a natural joint.

The aim is to relieve persistent pain, restore mobility and help you return to the activities that matter to you. 
Knee replacement is usually recommended for people whose symptoms have not improved with treatments such as physiotherapy, medication or injections, and whose daily life is affected by knee stiffness or reduced mobility.

When is a knee replacement needed?

Knee replacement surgery is considered when pain, stiffness or reduced knee function make daily activities difficult, and other treatments have not brought relief. 

It can be helpful for people with:

• Osteoarthritis – the most common cause, where the protective cartilage (flexible connective tissue) in the knee wears down
• Rheumatoid arthritis – inflammation that damages the knee joint
• Previous injury or fracture – which may lead to long-term instability or arthritis of the knee
• Reduced mobility – difficulty walking, climbing stairs or standing for extended periods
• Chronic knee pain – affecting sleep, work or leisure activities

Your consultant will carefully assess your symptoms, examine your knee and arrange any necessary investigative imaging scans to determine whether knee replacement surgery is the right option for you.

The benefits of knee replacement surgery

A total knee replacement can bring a range of improvements to your daily life, including:

• Reduced or eliminated pain – easing the constant discomfort caused by arthritis or injury
• Improved mobility – allowing you to walk, climb stairs and move with greater ease
• Better joint stability – making your knee feel more secure and less likely to give way
• Greater independence – enabling you to carry out everyday activities without relying on others
• Enhanced quality of life – helping you return to hobbies, social activities and exercise

At King Edward VII’s Hospital, these benefits are supported by advanced surgical techniques, expert orthopaedic care and a tailored physiotherapy plan designed to help you achieve the best possible outcome.
Our specialist knee unit is led by a dedicated team of orthopaedic surgeons with over 120 years of combined experience in treating a wide range of knee problems. 

Your knee replacement journey: what to expect

We understand that deciding to have knee replacement surgery is a significant step. At King Edward VII’s Hospital, we guide you through every stage with clear information, expert care and support tailored to you.

Initial consultation and diagnosis

You’ll meet one of our orthopaedic consultants who specialises in knee surgery. They will listen to your concerns, review your medical history, examine your knee and arrange any necessary imaging scans. Together, you’ll discuss whether surgery is the right option for you and develop a plan that suits your lifestyle and goals.

Pre-operative assessments

Before your operation, you’ll have a patient pre-assessment and a thorough health check to ensure you’re ready for surgery. This may include blood tests, heart checks and guidance on any medicines you take. Our team will explain how to prepare, including exercises to strengthen your knee ahead of surgery.

We’ll also invite you to take part in our Joint School, a specialist programme offering pre- and post-operative support at no additional charge.

The surgical procedure

Under anaesthetic, your surgeon will carefully remove the damaged surfaces of your knee joint and fit the new components with precision.

Surgery usually takes one to two hours.

Recovery timeline and aftercare

You can expect to stay in the hospital for one to three nights. During this time, our physiotherapists will help you walk safely, practise stairs and start your home exercise plan. To support smooth recovery, we encourage gentle movement within 12–24 hours of surgery using crutches or a walking frame.

You’ll receive clear guidance on when and how to return to your usual activities. Most people need some support with walking for around six weeks, and it can take up to three months for pain and swelling to settle fully. Follow-up appointments ensure you have the right support throughout your recovery.

Why choose King Edward VII’s Hospital for your knee replacement surgery?

Choosing where to have your knee replacement is an important decision. At King Edward VII’s Hospital, every aspect of your care is designed to give you the best possible outcome.

• Highly experienced orthopaedic surgeons – our consultants are leaders in their field, performing many successful knee replacements each year. You’ll see the same specialist throughout your journey, ensuring continuity of care
• World-class theatres and facilities – our surgical suites are equipped with the latest technology to support precision surgery and advanced infection prevention
• Personalised care before, during and after surgery – from your first consultation to your final physiotherapy session, your care plan is tailored to your needs, lifestyle and goals
• Outstanding patient satisfaction – patients consistently rate their experience with us highly, recognising our combination of clinical expertise, attentive nursing and seamless service

Our team works together to make your experience as smooth and reassuring as possible, so you can focus on getting back to the activities and life you enjoy.

Enquire for more information on knee replacement surgery

If knee pain is holding you back, we are here to help. Our orthopaedic specialists can provide clear answers, a personalised treatment plan and the reassurance you need to take the next step.

Speak to our team today to arrange a consultation or to find out more about knee replacement surgery at King Edward VII’s Hospital.

Frequently asked questions (FAQs) about knee replacements

How long does recovery take after a knee replacement?

Most people need some help with walking for about six weeks. During this time, you can usually resume light daily activities, but it may take up to three months for pain and swelling to settle completely. Strength, flexibility and confidence in your new knee will continue to improve over several months, with full recovery often taking up to a year.

Will I need physiotherapy?

Yes. Physiotherapy is essential for a successful outcome. You’ll start gentle exercises in the hospital and continue with a structured plan at home or in outpatient sessions with our physiotherapy team. 

Are there alternatives to total knee replacement surgery?

In some cases, knee pain can be managed with painkillers, physiotherapy and/or steroid injections. Using a walking aid, such as a stick, may also help. Less extensive surgical options, such as osteotomy or partial knee replacement, can sometimes be considered depending on your condition.

Is it possible to have both knees done?

Some people benefit from replacing both knees, either in a single operation or in two separate procedures spaced several months apart. Your surgeon will recommend the safest and most effective option for you.

How long will my knee replacement last?

Modern implants are designed to be durable, with many lasting 15 to 20 years or more. Longevity depends on factors such as your activity level, weight and bone health.

When can I drive or return to work?

You can usually drive once you can perform an emergency stop safely, which for most people is around six weeks after surgery. Returning to work depends on your role – desk-based work may be possible within four to six weeks, while more physically demanding jobs may take longer.