Crepitus: You may notice a grinding or crackling sensation which can manifest when moving the knee, due to the roughened bone surfaces rubbing from one another. Crepitus can also come about with movement pain. Cartilage injury, generally known as chondral injury, chondral lesions or ulcers, refers to damage to your https://www.theorthopaedicandpainpractice.com/what-are-cartilage-lesions/