The recovery time for a swollen knee depends on the extent of the injury and cannot be generalized. If there is no fracture, only soft tissue damage caused by swelling, can be recovered in about two weeks; if there is a fracture, swelling symptoms usually need about three weeks to recover, fracture generally need three months to recover. 1. No fracture: If the knee is swollen due to soft tissue injury, ligament and bone are not damaged, it can be recovered in about two weeks after positive relief, such as ice packs and hot packs. 2. Fracture: If the knee is swollen and a fracture occurs, the hematoma caused by the fracture will accumulate in the joint cavity and take time to absorb, and the swelling symptoms generally take three weeks to recover, but the fracture will take a longer time to recover, generally taking about three months. If you have accidentally caused a swollen knee, it is recommended that you seek prompt medical attention to confirm the exact severity of the fall under the guidance of your doctor and receive treatment.