Subpatellar fat pad edema, mild can be self-healing, while severe requires treatment to relieve, specifically into the following two cases: First, mild subpatellar fat pad edema, the cause of most knee trauma, when the knee joint hyperextension, causing injury to the knee fat pad, causing fat pad edema, clinical manifestations for the knee joint extension is limited, and joint pain, after knee rest, reduce weight bearing, and pay attention to warmth, the The symptoms can be cured in about two weeks. Second, severe subpatellar fat pad edema, which may be accompanied by local adhesions, requires local closed injection, once a week, three times for a course of treatment, if closed treatment is not effective, then arthroscopic subxiphoid fat pad resection should be considered.