Knee replacement resurfaces the worn ends of the thigh and shin bones with smooth metal and medical-grade plastic components, so the knee can bend and bear weight without bone rubbing on bone.
It is one of the most successful operations in orthopedics. Most patients return to walking, climbing stairs and sleeping without pain. Depending on how much of the joint is worn, the replacement can be total or partial.
When is it needed?
- Advanced knee arthritis clearly visible on X-ray
- Persistent pain that limits walking or wakes you at night
- Increasing bowing or stiffness of the knee
- No lasting improvement with medication, physiotherapy or injections
What to expect
- 01A full assessment with examination, X-rays and pre-operative tests
- 02Surgery usually takes one to two hours under spinal or general anaesthesia
- 03Walking with a frame from the day after surgery
- 04A hospital stay of around two to four days
Recovery
Most patients return to everyday activities within 6 to 12 weeks with regular physiotherapy, and strength and movement keep improving for several months. Modern implants typically last 15 to 20 years or more with follow-up.