It is usually at its worst when you stand on the affected leg and is often really bad at night. The pain can affect how far you can walk and may affect your ability to work. The main reason for needing a knee replacement operation is pain in the knee - a knee replacement operation is essentially a painkilling operation. This could be because it's really important to have strong muscles around the knee in order to make the best recovery and people who have the most advanced disease tend to have very weak leg muscles. Looking at all of the research on knee replacements (and it's good to know that there is lots), it would seem that the people who do best after a knee replacement are the ones with severe arthritis but not so bad that the joint is completely destroyed.
Most people who decide to have a knee replacement are already taking painkillers every day but are still not able to walk far and need to use a stick.
A doctor can tell you that you have arthritis in your knee and they can tell you that you could have a knee replacement but only you can decide if the time is right for you. You should always bear in mind that a knee replacement is a major operation and you should really only be considering it when you have run out of other options. The usual reason that someone has a knee replacement is because they have very painful arthritis in their knee. It is increasingly popular, as the outcomes have become better and better over the last decade or so. Surgery to replace a worn-out knee joint is very common.
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