I have a cousin that was born with a cubitus valgus deformity. He didn't have it fixed until he was in high school.
It didn't really give him any trouble. He could play basketball and swim, but it bothered him that it bothered other people. You know how anything makes you a victim in high school.
So he had his parents pay to get it fixed. Therapy took awhile and it took a really long time for him to be as good as he was as basketball. Now that it's fixed though -- he's doing really great. He's playing college basketball now without any trouble.