Knee Replacement FAQs

Do you have questions about knee replacement surgery? Find knee replacement information and answers below.

FAQs

Find the answers to your knee replacement surgery questions here.

What is a knee replacement?

Knee replacement, also known as knee arthroplasty, is a surgical procedure that involves removing damaged bone and cartilage from the knee joint and replacing them with artificial parts made of metal and plastic. This helps restore movement and relieve pain caused by injury or conditions like osteoarthritis.¹

Who is a candidate for knee replacement surgery?

Knee replacement surgery is typically recommended for patients who suffer from severe knee pain or stiffness that limits their ability to perform everyday activities such as walking, climbing stairs, or getting in and out of chairs.

If nonsurgical treatments like medications, physical therapy, or the use of walking aids no longer provide relief, surgery might be recommended. This procedure is especially helpful for people with advanced arthritis or serious joint damage. It can relieve pain, correct leg deformities like bowlegs, and improve mobility. A surgeon will evaluate symptoms, physical function, and imaging results to determine if knee replacement is the right option.¹

What is partial knee replacement?

Partial knee replacement is a less invasive surgery that replaces only the damaged portion of the knee joint. This option is suitable for patients whose arthritis is limited to one area of the knee. A partial knee replacement may allow for quicker recovery and more natural knee movement.²

What is a total knee replacement?

Total knee replacement is a procedure to replace all three compartments of the knee joint with artificial parts. This procedure is typically recommended when arthritis or damage affects the entire knee, and the goal is to relieve pain and improve function.³

How long does it take to recover from a partial knee replacement?

Patients usually recover from partial knee replacement surgery much faster than those who receive a total knee replacement. Most patients begin walking with assistance shortly after surgery, often on the same day. While individual recovery times can vary, most people can expect to return to normal activities within approximately 6 weeks. During this time, physical therapy plays a key role in regaining strength and mobility.²

How long does knee replacement surgery take?

Knee replacement surgery usually takes between 1 and 2 hours. The amount of time can vary depending on whether it is a total or partial replacement and the complexity of the patient’s condition.⁴

How long does it take to recover from a total knee replacement?

Recovery from knee replacement surgery typically begins within a day or two, with patients starting physical therapy and walking with assistance.

Most patients who receive a total knee replacement return to normal activities within 6 to 12 weeks, although full recovery may take several months.⁵

How long do knee replacements last?

Based on long-term data, up to 90% or more of knee replacements are expected to last at least 10 to 15 years. Many modern implants may last even longer, especially when patients follow recommended guidelines for activity and joint care.^6,7

^‍While some patients who received a partial knee replacement will require a total knee replacement due to progression of osteoarthritis, most patients who received a partial knee replacement will not require another surgery within 10 years.⁸‍

The longevity of any knee replacement depends on factors such as the patient’s age, activity level, and weight.^6,7

How do you know if you need a knee replacement?

Knee replacement surgery, also called knee arthroplasty, may be recommended for people who have ongoing knee pain, stiffness, or difficulty moving that doesn’t improve with nonsurgical treatments like medications, physical therapy, or injections.

If the damage is limited to just one part of the knee, a partial knee replacement is a good option to relieve pain and improve mobility.² When more than one area of the knee is affected, a total knee replacement may be the most effective treatment.¹

How should you prepare for knee replacement surgery?

Preparing for knee replacement involves discussing the procedure with your doctor; gathering personal and medical information, including your emergency contact, insurance information, and doctors you see; a list of your medical conditions, medications, and allergies; and strengthening your body through light exercise.

It’s also important to prepare your home for a safe recovery by removing tripping hazards and arranging for help during the first few weeks.⁹

Is knee replacement surgery outpatient?

Some patients may qualify for outpatient knee replacement surgery, which allows them to return home the same day. This depends on the patient’s overall health, support system, and the type of procedure being performed. Your surgeon will determine if this is a safe option for you.¹⁰

What should you expect following knee replacement surgery?

After surgery, you’ll be moved to a recovery room where your care team will monitor you closely as you wake up from anesthesia. They’ll check your vital signs, manage your pain, and ensure there are no immediate complications.¹¹Your surgeon will decide when you can go home after surgery. Most patients who receive a partial knee replacement can go home on the day of surgery,² while those who undergo a total knee replacement may have to stay in the hospital overnight.¹¹

Knee Replacement FAQs

FAQs

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