The bulge after healing of a knee injury is considered to be related to scar proliferation and incomplete resorption of the hematoma, which can be treated with general therapy, physical therapy and medication. After the healing of knee injury, the local bulge can be seen, considering that it may be caused by the hematoma caused by the local injury bleeding is not completely mechanized and not completely absorbed. The local injury caused by the fall of the knee, the injury healing local scar repair, scar hyperplasia can lead to bulging after healing. When the bulge appears after the healing of the knee injury, should avoid standing for a long time and strenuous exercise of the lower limbs, hot towels can be used to perform local hot compresses to improve local blood circulation and promote the dissipation and absorption of the local hematoma. You can also use local injection of drugs such as Triamcinolone acetonide under the guidance of the doctor, which can help to inhibit the proliferation of scar tissue. If you have a bulge in your knee after a fall, you need to consult a doctor to find out the cause of the bulge, which will help to alleviate the discomfort as soon as possible.