Total Knee Replacement: What Patients Should Know

Total knee replacement, also called knee arthroplasty, is a surgery that replaces the damaged parts of the knee joint with artificial components made of metal and plastic. The main goal is to relieve pain, improve mobility, and help patients return to their normal activities. It is often recommended for people with severe arthritis or injury when medications, injections, and physical therapy no longer provide relief.

Who Is a Candidate?

You may be a candidate if knee pain and stiffness limit your daily activities, cause trouble walking, climbing stairs, or getting in and out of chairs, and do not improve with non-surgical treatments. Surgeons typically evaluate knee strength, motion, and stability with an exam and X-rays before recommending surgery.

Preparing for Surgery

Before surgery, patients may attend educational sessions to learn what to expect. These include information on the procedure itself, pain management, and the recovery process. It is also common to plan ahead for help at home during the first few weeks after surgery.

The Procedure

Surgery is usually performed under general anesthesia or a regional nerve block. The surgeon makes an incision in the knee, removes damaged bone and cartilage from the thigh bone, shin bone, and sometimes the kneecap, then resurfaces those areas with metal and plastic implants. Advanced techniques such as minimally invasive incisions or robotic assistance may be used in some cases.

Recovery in the Hospital

Some patients go home the same day, while others may stay in the hospital for one or two nights. Early movement is encouraged, often starting within hours of surgery. Patients may begin standing and walking with assistance right away to reduce the risk of blood clots and stiffness.

Rehabilitation and Recovery at Home

Physical therapy is a vital part of recovery and typically starts immediately. Exercises focus on restoring knee motion, improving strength, and supporting safe movement. Most people use a walker or crutches at first, then gradually progress to walking unassisted. Full recovery varies, but many patients return to normal activities in 6 to 12 weeks, with continued improvements for up to a year.

Long-Term Results

Total knee replacement offers long-lasting relief for most patients. Artificial knees are designed to last 15 to 25 years or more. Many people are able to return to low-impact activities such as walking, swimming, and cycling, though high-impact sports are discouraged.

Risks and Complications

As with any surgery, there are risks. Possible complications include infection, blood clots, stiffness, persistent pain, or implant loosening over time. These risks are low, and most patients experience excellent results when following their surgeon’s guidance.

Total knee replacement is a safe and effective procedure that can significantly improve quality of life for people suffering from severe knee pain. With careful preparation, skilled surgery, and dedication to rehabilitation, most patients regain mobility, reduce pain, and return to an active lifestyle.