I am in the process of working with some other nurses and educators in my trauma hospital to make a pin care guideline. We are starting a study that will hopefully be published in the next year or so. Reviews of the literature available out there show that there are a huge variety of ways to do pin care, and no clear answer as to which is best at preventing pin site infections. Our old standard was the 1/2 NS and 1/2 peroxide mixture with sterile QTips, then a 4x4 gauze wrapped around as a barrier afterwards, done twice a day. Other ways to do this are to use just saline, or chlorhexidine, or to do nothing at all. Some studies indicate that doing NO pin care can actually DECREASE the risk of infection, as compared to peroxide, etc. But.....nothing is conclusive (and therefore we are starting a study). We get TONS of ex-fixes here, and mostly only have infection issues if they are the thigh pins in spanning ones or pelvic pins, especially on bigger patients.
So....my answer is that there IS NO tried and true PROVEN method that is best, and it is mostly MD specific as to what you want to do. Although, our MD's generally just write "pin care BID' and let us figure out what to do with that...........