The patella is an important part of the knee joint, and comminuted patella fractures can usually be treated with internal fixation through surgery. The patella is an important part of the knee joint and is the largest seed bone in the human body. Comminuted fractures of the patella are mostly caused by a comminuted fracture of the patella on the anterior side of the knee joint caused by the patient landing directly on the anterior side of the knee joint or by a localized direct impact in the event of a fall. This usually means that there are more than two pieces of broken bone at the end of the fracture, and the X-ray shows that the continuity of the bone cortex and trabeculae is interrupted, and the fracture is in the form of comminution. Patients may experience localized swelling and pain in the knee. The comminuted fracture of the patella can usually be treated with internal fixation through surgery. The internal fixation method should be used first, which means repairing and fixing the internal fracture place through surgery. Then use external fixation method, through a variety of fixation devices, such as plaster to be fixed, patients can choose according to their own situation. During the treatment, pay attention to more rest, more nutrition, if necessary, under the guidance of the doctor can use non-steroidal anti-inflammatory analgesic drugs, such as aspirin, ibuprofen and so on to relieve pain. Functional exercises are performed as prescribed by the doctor after an appropriate period of time to restore motor function.