yeah mine started in boot camp I dislocated my left shoulder in week 8 went doing bear crawls... I was able to hide it for the last few weeks. I was a squad leader so that helped. but the DIs kept asking what was up when on hikes and my pack was hanging off one shoulder lol. I finally told them once i graduated. to hell with MRP lol.. Then I dislocated my hip in Pensocola and thats what started the back issues I was on crutches for 6-7 months USN and USMC kept telling me there was nothing wrong took 3 years to get them too see the bursa sack in my hip was gone and my disc where jacked... nice talking to you too