Which department do I go to for a deformed sternum?

[Adlon57]

I am 64 years of age, have epilepsy, but it is my deformed sternum, about an inch higher on my left hand side of my chest, born with it, about 75% capability of normal breathing because of it. One of the ribs dislocates horizontally when I sit down, and get up. All my ribs have broken at various times due to various seizures, about 400 + of them, as I having epilepsy since 14, JMEpilepsy. I cannot walk around without a shirt or equivalent for obvious reasons. THERE MUST BE SOME FORM OF RIB REPLACEMENT? My epilepsy has seemingly abated recently 5 of them since Nov. 2017. Some of the ribs have a nasty habit of re-fracturing when I am at rest. An obvious question of a vasectomy is in the frame, as sex is just a hurdle with a person in my physical condition is non existent! This is well beyond my GP's range but what sort of specialist would I be able to get in contact with about this affliction? PLEASE?