500
Test for large amounts of fluid/use left hand to compress suprapetellar pouch to move any fluid into knee joint/with right hand, push patella sharply against femur;if no fluid is present, patella is already snug against femor stroke up on medial aspect of knee two or three times to displace any fluid; tap lateral aspect and watch medial side in hollow for distinct bulge from a fluid wave; normally, none is present
What is Fir Ballottment of patella