Whether a comminuted fracture of the heel bone can be moved on crutches 70 days after surgery needs to be determined according to the clinical manifestations as well as the imaging manifestations, and cannot be generalized. Generally speaking, fracture healing is divided into three phases: hematoma mechanization phase in about two weeks after surgery, scab formation phase in about 4 weeks, and scab remodeling phase in half a year to one year. Therefore, under normal circumstances, 70 days after surgery, there has been obvious scab formation, no obvious localized pressure pain, percussion pain, you can start crutches down to the ground activities. Postoperative imaging changes in the fracture: after internal fixation of the heel bone fracture, should be reviewed once a month heel bone lateral axis X-ray, to understand the fracture healing, whether there is a bone scab formation, generally 4 weeks after the new bone scab can be seen to gradually form, this time can be gradually weight-bearing, if two months later, the review has not yet seen the formation of bone scabs, then need to delay the weight-bearing time to be formed after the formation of bone scabs to be determined. Specific crutches on the ground time to be under the guidance of a professional physician, try not to choose your own, to avoid affecting the recovery of the fracture.