Robert L. Burke, MD discusses how to know if you need knee replacement surgery. People who have knee pain have to decide what is acceptable to them and what is not acceptable to them. The doctor has patients who love playing golfs and they cannot play because of their knee pain. The knee pain into them is such big of their life even though they can a lot of other things. So they decide to do the knee replacement surgery. Other people want to give up a lot more before having to do the surgery. But the thing that people need to understand is when your knee is consistently deciding for you when you can and you cannot do things that is the time you need to consider to have the surgery.