Hi John To be absolutely sure, visit your local urgent care facility for an X-Ray or similar. At least they will provide some sort of temporary relief crutches, pain medication, brace, etc. My guess is you twisted your knee joint, hence the pain on the sides { medial & lateral }. Best wishes for a speedy recovery.
It could be a hyperextension. I would go to the doctor to make sure that you haven't torn any of the small ligaments within the knee. Also, I would consider going to a few physiotherapy appointments to see if these would help!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.