Im just wondering if anyone has experienced something similar to this and if so what is it?....

Everytime i squat with or without weight, there is a loud grissley tearing noise from the inside of my right knee. It does not cause me any pain as such but it sounds awful. I havent experienced any loss of strength but i cannot run long distance as it gets very painful. As I said it hasnt been sore during heavy weight training so im not losing sleep over it.

Any advice suggestions much appreciated.