yes, elizabeth, i was referring to this woman being too fragile. in her case, her lungs were so badly damaged by the special ventilator, part of one had to be removed. i can't see her ever being able to lie flat and have a man on top of her banging away....i CAN see a number of other positions that would be easier.
it sounds crude but thousands of people are born with disabilities and thousands more suffer trauma and life threatening illness. i've spent the day trying to find more information. here's a few things i found...
http://www.guardian.co.uk/society/2004/oct/13/disability.socialcare
http://www.guardian.co.uk/g2/story/0,,1851774,00.html