I've never heard this from my doctor or reps about limitations in the future once things have scarred in. What unit do you have? I have 2 Boston Scientifics. I would imagine that we would need to avoid high contact activities, but other things I'm not so sure. I've also heard of others being advised of no roller coasters ever, but my doctor or reps never mentioned this and I have gone on many roller coaster rides after my surgery and have been fine. I would say using your best judgment and not being careless would be the best advice