Osteoarthritis (OA) is a degenerative joint disease characterized by the breakdown of cartilage, leading to pain, stiffness, and decreased mobility. It commonly affects the knees, hips, hands, and spine. The condition is primarily associated with aging, but other risk factors include joint injuries, obesity, genetics, and overuse of joints. Symptoms often include joint pain during or after movement, tenderness, loss of flexibility, and a grating sensation. While OA is a chronic condition, its progression can be managed through lifestyle changes, physical therapy, medications, and in severe cases, surgical interventions. Early diagnosis and treatment are crucial for maintaining joint function and improving quality of life.