Hi Nikos mom,
My daughter, who is just 17 has had her surgery for over a year now. I remember her surgeon saying she can do what ever she wants no restrictions. He even had a boy with a temp illo, play basketball and waited for his takedown until after the season was over. I know thats a little different then you son activity, but she is doing great. Out living her life like a normal teenager. good luck to you and your son.