The time to be able to walk after a patella fracture depends on the severity of the fracture, the treatment modality, the patient’s age and physical condition, as follows: 1. For young patients with minor and undisplaced patella fractures, they generally need to be fixed with a plaster brace or brace for about six weeks, and after removal of the external fixation, they need to perform functional exercises of the knee joint, and can walk with weight on the ground in about 8-12 weeks. 2. For patellar fractures with obvious displacement and comminution, surgical treatment is required, and rehabilitation functional exercises can be performed in the early postoperative period to restore the function of the knee joint, and it takes about 6-8 weeks after surgery to walk with weight on crutches, and about 12 weeks to walk with full weight. 3. The recovery time for the elderly is relatively slower due to the presence of osteoporosis and other diseases, and it takes about 12 weeks to walk on the ground.