Can the implants rupture in the airplane ?
This is a fairy-tale which goes back to an unique/single happening long time ago. Statistically the risk of rupture in the airplane is not higher than in other places. The air pressure is balanced out, the remaining pressure fluctuations in the airplane are small (the same change of pressure as for people moving to mountains). Further more the latest generation of cohesive silicone gel implants is highly elastic and resistant. The likelihood of a rupture is extremely low.