I came within a whisker of dis-locating, or I did dislocate and managed to do the right thing and got it back very quickly, confirmed by specialist Dr when I explained and showed him what I did, very carefully.
I was about 10 days after surgery, observing all the precautions, do NOT TWIST, stay square to everything, from bed to kitchen bench, bathroom sink, and DO NOT TWIST.
So what did I do, didn't like the look of where my pillow was, and standing square next to bed, TWISTED to adjust the pillow, IMMEDIATE EXTREME SEVERE PAIN, collapsed on bed face down screaming my head off, feet still on floor.
Husband and son came running, my advice don't touch me, but they turned and lifted me carefully, picked me up shoulders and knees and re-adjusted to a straight position on the bed, pain eased lying on my back.
Rang local Dr, he confirmed if I was in no pain, I should be OK.
Some weeks later spoke to specialist and he confirmed what i had feared, may have been a dis-location or a partial dis-location, ball riding up on to the edge of the cup of prothesis.
Have spoken to another man at the local pool who had dis-located, and was doing his physio, and he agreed pain beyond severe in his case, had to be put back in the hospital, he agreed I was very very lucky.