A bone fissure is actually a type of fracture, referring to a fracture where there is a crack in the cortical bone, but the stability of the bone is maintained. When a bone fissure occurs, it's important to immobilize and rest, avoiding excessive movement to prevent aggravating the cortical crack. Therefore, after a bone fissure occurs, common symptoms of a fracture such as pain, swelling, and limited mobility may also appear. Hence, if pain is severe after a bone fissure, it might be appropriate to choose some pain-relieving medications to alleviate the symptoms. (Medication should be used under the guidance of a doctor.)