Hi, may I answer your health queries right now ? Please type your query here...OK so i recentally got into a slight "fight" all in all i ended up getting my knees drop kicked backwards and they poped/ cracked loud enough for people around me to hear at a hs bonfire the guy i was with later informed me that it knocked me out, i decided it may have hit a nerve? anyways it was about 4 months ago and then next day i had black and blue knees and could barley walk know they dont bend right they have always poped when i bent them but if i stand for a long time they burn and give out how can i fix this?