my knee hurts when i bent it with pressure on it
my left knee hurts when i have pressure on it and bend it. it has only started to be a problem within the last year or so. if i have my own body weight on my left leg then bend down it won't start to hurt until about a 165 degree angle then it becomes like a sharp pain underneath the knee cap. i was able to bend down as far as i wanted without knee pain and i'm in a sport where i need to bend to about 90 degrees. so what can i do to fix or prevent this problem?