A bulge next to the knee may be due to local trauma, lateral knee cysts and knee bone tumors.
1. Localized trauma: If there is a history of obvious trauma, it should be considered that it may be caused by external impact, such as accidentally knocking on a door, window or corner, or because of an accidental fall resulting in damage to the local soft tissues, which may lead to obvious swelling of the knee area, and accompanied by pain and discomfort.
2. Lateral knee cysts: If the soft tissues around the knee appear to be bulging, there may be lateral knee cysts. If the knee area has been slightly traumatized before, it may lead to the formation of cysts around the knee, which may lead to the phenomenon of bulging next to the knee.
3. Knee bone tumor: If there is an obvious bulge on the knee bone, it may be caused by the knee bone disease, and then produce the knee bone tumor, which shows the bulge.
If you have a bulge next to your knee, you should go to the hospital for examination in time.