Crepitus: You may recognize a grinding or crackling feeling that will come about when moving the knee, a result of the roughened bone surfaces rubbing in opposition to each other. Crepitus also can take place with movement pain. Pre-current ailments: Joint conditions including rheumatoid arthritis or gout, or maybe diabetes https://www.theorthopaedicandpainpractice.com/what-is-knee-arthritis/