I was walking upstairs and heard a loud pop noise in the area of my knee. I immediately was in pain and could not put any weight on my leg. I can t bend it back wards. I can only walk with my leg straight. There s no swelling but still very tender in the back of the knee. What could cause this?
Hello there, I have read your concern, Although you have not mention twisting of knee but popping sound was heard which means Ligament was torn. As you can't bend you knee backwards and pain in back of the knee, I am suggesting ACL tear. I would suggest you to take NSAID over the counter Chat Doctor.