martha is a good volleyball player and is on the university womens team. she plays hard and trains harder. one day as she was rushing to get the ball, she tripped and fell on her knee ripping the skin. she applied a band aid and forgot about the incident. she applied a band aid and forgot about the incident. the next day she had a throbbing in the knee she fell on$.$ she removed the band aid and saw that there was a large swolllen lesion with green$-$grey pus.