Osteoarthritis, commonly known as 'kireçlenme' (calcification/limescale) in Turkish, is a degenerative disease that develops in the joints over time. Although typically associated with advanced age, it is characterized by the wear and thinning of cartilage tissue in the joints and a decrease in joint fluid. This condition leads to bones rubbing against each other, causing pain, swelling, and restricted movement. Osteoarthritis has different stages. While mild, age-related joint wear can be considered normal, advanced stages that significantly impact daily quality of life are regarded as a disease requiring medical intervention. Contrary to popular misconception, osteoarthritis is not the accumulation of calcium deposits in the joints; rather, it is the deterioration of the cartilage structure. This condition is often confused with limescale buildup in teapots or pans. Joints that bear the most weight, such as the knees, hips, and spine, are the most frequently affected by osteoarthritis.