Fracture 50 days, still swollen may be the following reasons: First, more common is the fracture disease, after the fracture will cause damage to the surrounding soft tissue, local circulation will become poor, there will be local swelling. Second, after the fracture, if there is no activity for a long time, and then suddenly after 50 days, the swelling will also appear at this time, because the circulation of the lower limb is still poor, and the circulation is not good, and the swelling will also appear at this time. Third, to further clarify whether there is venous thromboembolism, fracture swelling usually occurs in the lower extremity, but also in the upper extremity, so the lower extremity should pay special attention to whether there is the formation of venous embolism, you can do ultrasound to further clarify. Fourthly, if the fracture swelling is still swollen after 50 days, it is necessary to further rule out the occurrence of fracture instability, fracture displacement, fracture misalignment. Fifth, fracture swelling 50 days later may also be, for example, pathological fracture, tumor recurrence or infection, chronic inflammation or low toxicity infection may also cause swelling, and even osteomyelitis may appear swelling.