Fracture comminuted fracture 80 days after surgery, can crutches down to the ground with the fracture site and the recovery situation, generally speaking, the blood supply is poorer parts of the comminuted fracture 80 days after surgery is not recommended crutches down to the ground. 1. If the site of comminuted fracture blood supply is better, such as femoral comminuted fracture, ankle comminuted fracture and tibial plateau comminuted fracture, etc., these parts of the fracture healing is generally faster, after standardized treatment, generally about half a year can be crutches down to the ground activities. 2, if the site of comminuted fracture blood supply is poor, such as tibial stem middle and lower 1/3 comminuted fracture, femoral neck fracture and heel bone comminuted fracture, etc., the fracture healing time is long, the recovery time is longer. In conclusion, 80 days after the comminuted fracture operation, it is not recommended to blindly go down to the ground too early, it is recommended to go to the hospital for review, by the professional doctor according to the patient’s own recovery, whether to guide the crutches to go down to the ground activities.