Bipartite patella surgery?

[Cmort]

My son is 15.  He has Bipartite patella. We found out last year when his knee was xrayed for pain.  He is a basketball player.  When pain got to hurt to much He rested his knee for 3 months.  The pain eventually went away.  He was pain free for 4 months.  Then the pain came back.  He rested for another month.  The pain got worse. He has tried to play basketball and 5 minutes into playing he has to stop because it hurts so bad.  He says it’s sharp pain. Has anyone ever had the surgery to remove the small fragment? We are looking into doing this as he is so bummed about not being able to play the sport he loves and also  just be a kid and run around and play with his friends.    
I’d like to hear what you think?