Bodies are amazing things in their adaptability and their resilience. It may well be our minds that need more retraining!
Here's a link to an organization based in the UK called The Outsiders. They're a group of disabled people working on issues of disability and sexuality.
http://www.outsiders.org.uk/
On their front page is a list of their goals, and the first one is "Work together to campaign for the acceptance of disabled people as sexual partners"
...because public space really matters!
Elizabeth