FOR A NUMBER OF WEEKS NOW, I VE BEEN HAVING PAIN IN MY LEFT KNEE. IT STARTED AFTER i BEGAN WALKING WITH MY WIFE - TRYING TO GET 10,000 STEPS. IT IS BELOW MY KNEE CAP AND ON THE INSIDE OF THE KNEE. IT DOES NOT HURT ALL THE TIME BUT SITTING AT WORK, AND THEN GETTING UP, MAKES IT WORSE. IT IS ESPECIALLY BAD WHEN i HAVE PLACED MY FOOT AND TURN MY BODY OR WHEN MY BODY IS IN PLACE AND MY FOOT IT TURNED TO EITHER SIDE. THEN, IT IS A SHARP BURNING PAIN, LIKE A TORN MUSCLE. I AM 61 YEARS OLD. THERE ARE ALOS TIME WHEN I AM IN BED SLEEPING ON MY SIDE THAT LIFTING THAT LEG (CREATING LATERAL TENSION ON THE KNEE JOINT) CAUSE THE SAME PAIN AND BURNING SENSATION.