what is the name for lower/left right knee pain
over the summer I had an injury in softball I twisted it the wrong way but in basketball seasen I twisted it again but it hurt worse this pain is in the right knee it is in the lower/left side of my knee. I went to the er but they didn't see anything on the x-ray.they put me on crutches. I came off crutches a week later I was walking but it started up again. I know this has something to do with my tendons/ligements/muscles. I need an answer to what is wrong and how to treat it.I also need to know if I'm going to have to get surgery or physical theropy. I would appricate it if u could find an answer to my pain.