Women and girls have a higher risk of developing arthritis. Nearly two thirds of all Americans with some form of arthritis are female. Women represent 74% of all cases of osteoarthritis alone. Osteoarthritis may run in families. A certain gene mutation may cause joints to produce defective collagen, a protein in cartilage, which may weaken cartilage and cause it to break down in the joints. Osteoarthritis is more common in older people than younger people. However, old age DOES NOT... Read More