A bone fissure is actually a type of fracture, characterized by a crack in the cortical bone, yet the overall stability of the bone remains intact. Even with a fissure, treatment similar to that for fractures should be implemented: immobilization and appropriate cold therapy in the early stages to aid in healing. After immobilization, it is crucial to limit excessive movement to prevent the stable fracture from becoming unstable. During immobilization, attention must be paid to the circulation around the fracture site and the mobility of joints in adjacent areas of the limb. If severe swelling occurs, along with restricted movement of neighboring limbs, symptoms of compartment syndrome may be present. Therefore, it is essential to be vigilant about circulation and sensory changes in the affected area.