 [ Symptoms ] i had a bad fall pain is still the same [ Disease ] in my opinion it is just severe bruises but does not seem fractured or injured further if you can walk no swelling in foot or distal to the injury site it would be bruising only…but you seem obese and this can explain the cause of exaggerated pain as you may have had formerly osteoarthritis in the knee that can be aggravated and show up with a fall like that one i recommend treating the bruising with ice application and elevation use an anti bruising cream then do a knee plain xray from standing position regards