My knee landed hard on concrete, 2 days ago. there's some pain, but i can walk. it's red & slightly swollen. does the swelling confirm a fracture?

Knee Trauma: After knee trauma a fracture may occur depending upon the speed, energy, and mechanism of the injury, the underlying strength of the bone,etc. Ability to bear weight with minimal pain may rule out a major fracture, however plain radiographs are the best way to look for a fracture in addition to a standard exam. Blood in the joint can be associated with ligament injury. Go to Urgent Care