I can move the lower part of my leg approx

Patient: I can move the lower part of my leg approx. 2Inches. Back and forth at the knee joint,also i can move my hip.in and out of place and my shoulder joint is always bothering me with pain.all of these problems are on the right side of my body.could this be some kind of disease ?? It never use to bother me but now i am starting to get a lot of pain in these joints.

Doctor: