In the case of a calf fracture with postoperative foot swelling after internal fixation, it is possible that the fracture caused a vascular injury, such as a tibial or fibular fracture resulting in an injury to the popliteal artery, which can impair blood circulation to the plantar aspect of the foot and cause foot edema. It may be a complication of surgery, such as osteo-fascial compartment syndrome often occurs in the forearm and lower leg, especially after the fracture to form a severe edema and hematoma, resulting in an increase in its internal volume, coupled with the tight bandage after the fracture, the local pressure increases, so that the pressure in the compartment further increases, and when it reaches a certain level, it will lead to occlusion of blood circulation supplying local tissues and muscles, which will form Ischemic edema can lead to abnormal sensation in the foot and leg, and can be accompanied by severe pulling pain. If detected early, the wound needs to be removed and re-draped in a timely manner. If there are bleeding spots in the wound that are not fully ligated, it is important to look for them as much as possible to ensure that there are no bleeding spots before giving proper pressure, otherwise, if not corrected in time, it will easily cause complete ischemic necrosis, and in serious cases, amputation is required.