Should i keep playing volleyball after knee surgery? Is it worth risking?

I don't think it's worth risking. I had an inflamed patella (which isn't as bad as a surgery), but i was still in discomfort and pain. I took at least four months or more off from volleyball and any other physical activity. But to stay in shape, i walked the beach, to build up muscle around the knee, that way it would be a shorter resting period and you can go back volleyball sooner. But i say take a break. It will help. an exercise that helped me was to lay down, with my legs straight out turn one leg outward, and lift it up and bring it down (don't let it drop, fight the gravity) do this for a set of at least 12. It strengthens the inner thighs. You could also use a bicycle machine and do that on low impact for a few minutes. If it hurts, then subtract time/reps for these exercises. These are only some of the exercises that i was shown, during physical therapy. if you need more , just let me know. :) Hope this helped. And also , you can easily get back on volleyball in college :) once you know how , you will never forget :) P.s. I'm 15, so i know how you feel haha :D