A broken bone, also known as a fracture, occurs when a bone is subjected to more force than it can withstand. This can happen due to accidents, falls, or sports injuries. Symptoms often include pain, swelling, and difficulty moving the affected area. There are different types of fractures, such as simple fractures, where the bone breaks cleanly, and compound fractures, where the bone pierces the skin. Treatment typically involves immobilization with a cast or splint, and in some cases, surgery may be necessary to realign the bone.