I've been out of EMS for a few years now, but these have (or had at least) fallen massively out of favor. Effectively, you could artificially keep the patient

I've been out of EMS for a few years now, but these have (or had at least) fallen massively out of favor. Effectively, you could artificially keep the patient alive by using MAST pants, but they inevitably crash when they were removed. My old service had a few pairs tucked back in a closest, but none on any of the rigs. I'm quite certain they aren't in allowable by protocol in most places at this point. A pretty wild device, nonetheless! EDIT: Quick edit to throw in that I have heard tales from the old heads of using them to stabilize pelvic fractures, too.