I have sharp pain in my right leg ( and weakness In the knee) upon standing after I have been sitting for a while sometimes as little as10 min. I am ok after about a min.or 2 and can go about my activities just fine. I had an MRI ( after a few dif. Types of Drs. ,in June) where it was discovered I had a completely unrelated ovarian cyst on the other side--removed, benign,no problem). I am 76. In good health and just had no problem shoveling snow for a full hour. What s with this leg? Hopefully this is my free 1 st consult... N