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Knee replacement

A knee replacement is a surgery that replaces damaged parts of the knee joint with artificial components (prostheses). It’s commonly used for severe arthritis (such as osteoarthritis or rheumatoid arthritis) or other joint damage that causes persistent pain, stiffness, and reduced function despite non-surgical treatmen

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  1. Knee replacement (total or partial)

    A knee replacement is a surgery that replaces damaged parts of the knee joint with artificial components (prostheses). It’s commonly used for severe arthritis (such as osteoarthritis or rheumatoid arthritis) or other joint damage that causes persistent pain, stiffness, and reduced function despite non-surgical treatments. There are two main types: total knee replacement (replacing both sides of the joint) and partial knee replacement (replacing only one compartment). The procedure typically involves removing worn cartilage and bone surfaces, then positioning the prosthesis components using cement or cementless fixation. Recovery usually includes physical therapy to restore range of motion, strength, and walking ability. Many people use assistive devices briefly (walker or cane) and gradually return to daily activities over weeks to months, depending on overall health and rehabilitation progress.

  2. What to expect and when to seek care

    Before surgery, clinicians may order imaging (X-ray, sometimes MRI) and review medical history, medications, and risk factors. After surgery, common short-term goals include pain control, preventing blood clots, wound care, and early mobility. Seek prompt medical attention for signs such as increasing redness or drainage from the incision, fever, worsening calf pain or swelling, sudden shortness of breath, or severe uncontrolled pain.

  3. Professional-care note

    This is general health information, not medical advice. A qualified orthopedic surgeon and care team can assess your specific condition, discuss risks and benefits, and tailor a plan for prehabilitation, surgery, and rehabilitation.

This content may relate to health. Use professional medical care for diagnosis and treatment decisions.

FAQ

How long does a knee replacement last?

Many modern knee replacements can last 15–20 years or more, but longevity varies by age, activity level, implant type, and overall health.

What is the typical recovery timeline?

Walking and basic activities often improve within weeks, while more complete recovery commonly takes several months with structured physical therapy.

What are common risks?

Risks include infection, blood clots, stiffness, implant loosening, nerve or blood vessel injury, and persistent pain—your surgeon can explain your personal risk profile.

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