...spondylolithesis (back bone problem? My son just was diagnosised with spondylolithesis which is the spine is slipping forward. The activities they have mentioned on the internet have been high contact or bending sports such as football or gymnastics to stay away from. There are even more told. Right now my son is 14 and is in track and really he is not a sports guy but can do this sport. I hate to take it away because sitting at home doing nothing doesnt sound very good for the back either. It wasnt mentioned as a sport to avoid but I was wondering if anyone had any experience with this condition. Thanks!