After a fracture of the heel bone, swelling gradually appears at the fracture site, with symptoms peaking in 2-3 days, and the swelling slowly subsides in about 7-10 days after rest or appropriate treatment. However, due to the specificity of the location of the heel bone, mild swelling at the heel bone can last as long as six months. Because the limb is in a braked state for a long time after the fracture, the activity is often restricted, while the patient is in a standing or sitting position for a long time during functional rehabilitation, with the foot in a drooping state, below the horizontal position of the heart. In addition, long periods of limb immobility may present a risk of deep vein thrombosis.