Bad Knees More Condition_symptoms What Can I Do About Bad Knees If I'm Not Exactly Sure What The Problem Is?

What can I do about bad knees if I'm not exactly sure what the problem is? - bad knees more condition_symptoms

My knees, it is difficult to walk a certain distance or walk for long periods. I have seen doctors, but not conclusive, what the real problem. Was that I have said, cartiledge small tears in the meniscus, or low / damaged. The only way to know for sure is through an MRI, which can not afford right now. What can I do to improve my lap in general, until you know exactly what is the problem?