Sternal wire failure can be managed nonoperatively (unwilling to tolerate the pain?!); however, repair is indicated if fractured wires are displaced or potentially migratory.
The danger of no intervention is a progressive wire fracture and migration caused by the constant sternal motion allowed by the development of sternal nonunion (there may be non-union based on your pain history).
..."Although not all patients with fractured sternal wires or chronic sternal nonunion require rewiring, the presence of a displaced wire fracture, or a potentially migratory segment is a strong indication for operative repair. If patients are treated conservatively, close surveillance is mandatory and changes in wire integrity must be carefully assessed on every chest roentgenogram"....
I also had a triple bypass in april of 08 and have never had a day without pain , almost 2 yrs later. Just found out i have 2 broken sternum wires and was going to have surgery to have them taken out and have cancelled it because I am scared to death of the outcome because i am high risk because of diabetes , obesity, and am a smoker. I take 4 pain pills a day just so i can funtion. I would like to hear from someone who has had the operation . I just have no faith in doctors, but i can't live with this pain much longer. thanks, Mickey in Ohio