Osteoarthritis, also called osteoarthrosis or degenerative joint disease, disorder of the joints characterized by progressive deterioration of the articular cartilage or of the entire joint, including the articular cartilage, the synovium (joint lining), the ligaments, and the subchondral bone (bone beneath the cartilage). Osteoarthritis is the most common joint disease, although estimates of incidence and prevalence vary across different regions of the world and among different populations. By some estimates nearly 10 percent of men and about 18 percent of women over age 60 are affected by the condition. Although its suffix indicates otherwise, osteoarthritis is not characterized by excessive joint inflammation as is the case with rheumatoid arthritis. The disease may be asymptomatic, especially in the early years of its onset. As it progresses, however, pain, stiffness, and a limitation in movement may develop. Common sites of discomfort are the vertebrae, knees, and hips—joints that bear much of the weight of the body.
Osteoarthritis, also called osteoarthrosis or degenerative joint disease, disorder of the joints characterized by progressive deterioration of the articular cartilage or of the entire joint, including the articular cartilage, the synovium (joint lining), the ligaments, and the subchondral bone (bone beneath the cartilage). Osteoarthritis is the most common joint disease, although estimates of incidence and prevalence vary across different regions of the world and among different populations. By some estimates nearly 10 percent of men and about 18 percent of women over age 60 are affected by the condition. Although its suffix indicates otherwise, osteoarthritis is not characterized by excessive joint inflammation as is the case with rheumatoid arthritis. The disease may be asymptomatic, especially in the early years of its onset. As it progresses, however, pain, stiffness, and a limitation in movement may develop. Common sites of discomfort are the vertebrae, knees, and hips—joints that bear much of the weight of the body.
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