I understand. Endless tests, which may seem to solve nothing, seems like an exercise in futility; nothing wrong with taking other measures to help alleviate pain or help with mobility.
But if the doctors believe at some point at test may eventually supply an answer, and, thereby, bring a better result down the road......
I'm hoping that the recent battery of poking and prodding tells me something.
But it has been so far an exercise in not getting answers.
*sigh*
So far the answer has been, "We haven't sen a reason for your knees to hurt."