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Yes, it can sometimes take up to 4-6 weeks for traumatic injury of the legs to heal. When someone has significant swelling after a fall, it is appropriate to be checked to be certain that there is no fracture or a DVT, as you have done. But since these problems have been excluded, it would be fine to continue to manage this with conservative management, such as elevation, ice, moist heat, ACE bandage for compression, anti-inflammatory medicines, and pain medicines, such as the Vicodin.
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