Surgery·Surgery
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Knee replacement is a surgery where a damaged knee joint is removed and replaced with an artificial joint made of metal and plastic. It is done to relieve severe pain and improve movement when other treatments have not helped.
Key facts
Yes, knee replacement is one of the most common joint replacement surgeries. In the UK, over 100,000 knee replacements are performed each year.
It is most often done in people aged 60 and older, but younger adults with severe joint damage from injury or arthritis may also be candidates.
Your doctor will ask about your symptoms and examine your knee. They may order imaging tests to see the damage inside the joint.
Your doctor will discuss your pain level, activity goals, and whether non‑surgical treatments have been tried. They will explain the benefits and risks of knee replacement so you can make an informed choice.
Treatment for knee pain starts with non‑surgical options. If these do not help enough, knee replacement may be considered. The surgery has both benefits (pain relief, better movement) and risks (infection, blood clots, stiffness).
Non‑surgical treatments include pain relievers (such as acetaminophen or nonsteroidal anti‑inflammatory drugs), prescription creams, physical therapy, and joint injections with steroids or a lubricant. These treatments can help but do not fix the underlying damage.
After knee replacement, you will need to do physiotherapy exercises to regain strength and range of motion. Most people can walk without support within 6 to 12 weeks and return to normal activities in 3 to 6 months. Full recovery may take up to a year.
A balanced diet helps with healing and weight control. Include plenty of protein, fruits, and vegetables. Low‑impact exercises like swimming, cycling, and walking are good for long‑term joint health.
Recovery can be frustrating. It is normal to feel down or anxious. Talk to your doctor or a counsellor if you feel overwhelmed. Staying active and connecting with others can help.
Knee replacement itself cannot be prevented, but you may reduce your risk of needing an early replacement by maintaining a healthy weight, exercising regularly, protecting your knees from injury, and managing conditions like arthritis early.
For most people, knee replacement leads to significant pain relief and a better quality of life. The surgery has risks, but serious complications are uncommon. With proper care and follow‑up, the new knee can work well for many years.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 17, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Surgery is usually considered when knee pain is severe enough to affect sleep, work, or daily life, and when non‑surgical options have not worked. Your surgeon will explain the specific benefits (pain relief, improved mobility) and risks (infection, blood clots, nerve damage, implant failure) so you can decide together.