If you break your knee somehow there will be signs of the broken knee such as swelling around the kneecap.
Other signs of a broken knee are severe pain that occurs in and around the kneecap, pain when you move your knee in both directions, tenderness when pressing on the kneecap and a deformed appearance of the knee caused by the fractured pieces when you broken your knee.
Another sign of a broken knee is the difficulty extending your leg or doing a straight-leg raise.
If you have a broken knee or think you may have a broken knee you should see a doctor or go to urgent care or the emergency room to get the broken knee fixed before it becomes worse.
When you leave a broken knee untreated the pain will get worse and then the untreated broken knee will not heal properly which will result in visible deformities, misalignment, limited movement, and infection.