Questions about LR surgery

I am a fourteen year old girl who is very active in sports. My knee has been bothering me for three years. My first docter said that it is PFS and I would grow out of it with time and therapy. I went to therapy for a month or two and it did not helped. So we changed to a new docter for a second opinion, he also said that it was PFS and wanted me to try therapy again, so I did for about four months this time and it also has not helped, so he has recommended doing a lateral release. I wanted to know how succesful the surgery is and if I could ever play sports again after the surgery. They also say that I may grow out of it by the time I am sixteen and I really don't understand how I could grow out of it.