I'm 6'4 260. I have a vertebrae that is pushed in and twisted in my lumbar spine. Deadlifts were never my strong suit due to my height. Add that injury into it and it is not even worth doing; I'll only hurt myself that much more.
I haven't dislocated my shoulder, but I separated it twice. My front tire popped off my mountain bike while I was going full speed and I landed on my shoulder on the side walk. Second time in judo.
I know everyone loves the dead lift now, but I don't find it all that practical unless you want to get into Olympic lifting. There are plenty of safer ways to train. You more or less have to have to be built a certain way to do it from the ground and have optimal posture.
I'd love to be able to do a one arm pullup, but I'd have to lose weight for that.
Edit: I also got a sports hernia from deadlifting about seven years ago.