If your knee is severely damaged by arthritis or injury, it may be hard for you to perform simple activities, such as walking or climbing stairs. You may even begin to feel pain while you are sitting or lying down.
If nonsurgical treatments like medications and using walking supports are no longer helpful, you may want to consider total knee replacement surgery. Joint replacement surgery is a safe and effective procedure to relieve pain, correct leg deformity, and help you resume normal activities.
The most common cause of chronic knee pain and disability is arthritis. Although there are many types of arthritis, most knee pain is caused by just three types: osteoarthritis, rheumatoid arthritis, and post-traumatic arthritis.
A knee replacement (also called knee arthroplasty) might be more accurately termed a knee "resurfacing" because only the surface of the bones is actually replaced.
People who benefit from total knee replacement often have:
- Severe knee pain or stiffness that limits your everyday activities, including walking, climbing stairs, and getting in and out of chairs. You may find it hard to walk more than a few blocks without significant pain and you may need to use a cane or walker
- Moderate or severe knee pain while resting, either day or night
- Chronic knee inflammation and swelling that does not improve with rest or medications
- Knee deformity a bowing in or out of your knee
- Failure to substantially improve with other treatments such as anti-inflammatory medications, cortisone injections, lubricating injections, physical therapy, or other surgeries
IS THIS YOUR CASE ?
All of us tend to ignore our knees while they are working smoothly. We don´t think about them until something goes wrong. But when a problem knee causes discomfort and interferes with normal activities, we suddenly realize how important our knees truly are. The following symptoms may be the first warning of knee problems:
Pain is the most common complaint. It can vary from recurring vague discomfort to sudden, severe pain following an injury. Swelling immediately following an injury is usually due to bleeding inside the joint. Swelling with clear fluid can come on more slowly and is a sign of some internal knee irritation.
Locking or giving way can be due to a variety of causes, but is most often associated with mechanical problem or a loose body in the knee.
Limited movement or stiffness may be noted at certain times of the day or may occur soon after injury.
Grinding or cracking may be noticed in the knee. This may indicate a roughening of the bone or articular cartilage.
The Surgical Procedure
When the surgical team is ready, you´ll be taken to the operating room. There you´ll be given anesthesia. The anesthesia will help you sleep through surgery, or it will make you numb from the waist down. Then an incision is made on the front or side your knee. Any damaged bone is cleaned away, and the new joint is put into place. The incision is closed with staples or stitches.
The incision is about 8 to 10 inches long, and is often on the front of the knee.
Preparing the bone all of the bone surfaces of the joint are shaped to hold the prosthesis. Then the parts of the prosthesis are put in place. At this point, your surgeon tests the fit and alignment ot the prosthesis.
Joining the new parts If the prosthesis fits correctly, its parts are secured to the thighbone, kneecap and shinbone. Then these parts are joined. Together they form the new joint.