"I was hoping to get some responses from people with similar injurys when they were young athletes and how they overcame them."
I've had the same injury twice, 20 years apart, but if you're son is a recurrent dislocater, that is a different story. In his case it may very well be that something about his knee is built a bit off e.g. the groove that the patella rides in (as it glides up and down) may be too shallow, the patella my ride too high, he may be knock kneed, etc. How he will do long term depends exactly on what is causing it, and how sucessful the surgery is.
They are a bit technical, and you may have to register, but here are two medical sites with more info: