Abilities and Disabilities

When you have a child, you don't get to decide what disabilities you'd be able to manage.  I think that's what I find so strange about completing the adoption applications.  What types of disabilities would you open to when adopting a child? 
I was thinking about this the other day when I was babysitting 7 year old twins.  Both were born healthy, but back in October the little girl was in an accident.  She was always the leader, after school she would organize games on the playground, even when she was the kindergartner and there were much older kids around.  She was determined to always be first or the only kindergartner to accomplish something.  She could climb to the very top of the big climbing net at the school, fly her kite on hot muggy, windless days. 
Last October her leg was crushed at an outdoor event by scaffolding that collapsed.  For months she was in the hospital, she was moved to Children's in DC for the pediatric specialist.  The doctors did a dozen operations to save her leg, but finally in February, right before her 7th birthday, her leg was amputated midway down the shin.  I saw her shortly after that operation, on her birthday.  She was cheerful, chatty and boasted "I'm off antibiotics."  She hopped around and used crutches, determined to do things on her own.  She traveled to New York and Philadelphia to get a prostethic and for physical therapy to learn to walk on it. 
Last week when I saw her, she back to her old self.  Running around on the playground, organizing games with the other kids.  It is amazing to see how resilient and happy she is.  She is healthy, and excited to be back with her friends. 
The prosthesis is amazing too.  She can walk, climb, run - even ice skate.  If she was wearing pants, you could never tell that anything was different- there is no discernable change in her gait.  Instead of making it look like skin, it has a pink and grey pattern.  She told me she could get it with tye die or peace signs, but she choose the pink and grey swirls.  Sometimes the other kids ask her how long she has to wear the "cast" and she simply tells them "forever." 
Before visiting with her last week, I was doubtful we could manage a child with a mobility disability.  We have steep steps to get into our house and no bathroom on the first floor.  I think it would be a challenge to have a child who is unable to get around without a wheelchair, but with the advances in medical technology available in the United States, most missing limbs or limb deficiencies can have minimal impact on a child's mobility.