Osgood-Schlatter Disease:This condition involves inflammation and sometimes tearing of the ligaments within the knee. Treatment typically involves rest, casting if necessary, and in some cases, surgery. Osgood-Schlatter disease arises from repetitive strain or tension on a growth area of the upper tibia known as the apophysis. It is marked by inflammation of the patellar tendon and surrounding soft tissues where the tendon attaches to the tibia. The condition can also result in an avulsion injury, where the tendon is pulled so strongly that it tears away from the tibia, often taking a piece of bone with it. This disease primarily affects active young individuals, especially boys aged 10 to 15, who participate in sports or activities involving frequent running and jumping.Individuals with this disease experience pain just below the knee joint, which typically worsens with activity and eases with rest. A noticeable bony bump, which is particularly tender when pressed, may develop on the upper edge of the tibia beneath the kneecap. Generally, knee movement is not restricted. The pain may persist for several months and can recur until the child's growth is complete.Osgood-Schlatter disease is usually diagnosed based on symptoms. An X-ray might appear normal, reveal an avulsion injury, or more commonly, show fragmentation of the apophysis. The condition often resolves without treatment. Applying ice when pain begins helps reduce inflammation and is sometimes paired with stretching and strengthening exercises. Doctors might advise limiting participation in intense sports activities. Children who want to continue playing moderate or less stressful sports may need knee pads for protection and should apply ice after activities. If significant pain occurs during sports, participation should be reduced until the discomfort is manageable.