The main symptom of<unk>  is pain; this is due to the grinding of the bones against each other because of the lack of cartilage. Pain usually occurs in the front of the<unk>  and is worse with motion. People with<unk>  will also experience moderate to severe weakness, stiffness developing over many years, and the inability to sleep on the affected<unk> .
Shoulder arthritis
Knee arthritis
Facet joint arthrosis
Facet syndrome
Osteochondritis
Back strain
Medial knee injuries
Knee dislocation