You've got the two mixed up....dislocations are MUCH easier to dislocate again. Once a bone heals, it's good to go. Depending one the population you poll, the redislocation rate is anywhere from 50% to 90%, without surgery, which is insane! When I crashed, they thought it could be my collar bone at first, and I was praying for it to be, because all that meant was a brace for a few weeks and I'd never have to worry about it again. With my dislocated shoulder, it could forever be a problem, but I followed my rehab precisely, so I hope that had some effect on my changes of redislocating it.