Why does degenerative joint disease cause knee pain?

Arthritis pain: Degenerative joint disease (DJD) is a descriptive phrase for arthritis. DJD involves wear and tear to the articular cartilage of the knee. This process can cause pain and inflammation, which can range from mild to severe, depending on the severity of the arthritis. For help with treatment of your djd, consult an orthopaedic surgeon.