what is djd knee
Degenerative Joint Disease - Hip (Osteoarthritis) Osteoarthritis or Degenerative Joint Disease is the most common type of arthritis that occurs most commonly in hips, knees, ankles, and foot joints. Osteoarthritis is also known as wear and tear arthritis since the cartilage simply wears out. When cartilage wears away, bone rubs on bone causing severe pain and disability.