For comminuted patella fracture, if it is a closed fracture and the surrounding soft tissue damage is not particularly serious, it is generally expected to reach complete healing of the fracture, that is, bony healing, in 3-6 months. On the X-ray of review, the fracture line will disappear, and although the texture of the bone trabeculae within the patella will appear to be disordered a little bit, it also reaches the clinical standard of healing. There are some open fractures, due to more serious soft tissue damage, more serious contamination, and involving the absence of some broken bone fragments, even after systematic surgical treatment and careful intraoperative treatment, it may not be able to achieve the normal healing time, and may even reach the fracture does not heal, and usually need to be operated again.