Doc says to avoid draining knee effusion due to all my surgeries/osteoarthritis, but effusion won't go away (i've tried everything). Shld it b avoided?

See a rheumatologist. You are 23 years old and while it is possible that the continued inflammation is due to osteoarthritis, it is also very possible that there is another cause. This is an issue in which a rheumatologist can be very helpful.