I lost full motion of my right shoulder, hurts a little all the time. It was initially hurt when one day I was jogging along, and some teenagers as a joke speed past me doing about 60 mph, and threw a "Ski boot" of all things. It actually hit me hard enough to knock me off my feet. It healed but kinda bothered me a little still. But then a couple of years ago, I high sided my motorcycle in a crash. I think I landed on my shoulder in the same spot, and it's been aching ever since lol... especially when there is a high pressure system.