I dated a girl who was partially paralyzed from the hips down from a car accident. She had been thrown from the car and impacted her neck. She was an incredibly sexy person. I don't care if she had to use crutches to walk around or not. She was a very stimulating and vibrant person who was just bursting with life and energy.
The relationship with her was interesting but this is the sex board so I'll just stay on topic. Sex with her was interesting. She had no feeling in her clitoris from the accident but she could feel me inside of her. She was unable to experience orgasm but she enjoyed the feeling of intercourse immensely. There was much more emphasis on foreplay from the waist up with her than any other relationship I'd been in and it was refreshing and exciting in its 'newness'.
I think people often dismiss out of hand the sexuality of a disabled person to ultimately, their great loss.
Have an open mind, it can be worth it.