To be fair, the sport is called Quad Rugby, and the movie does use the term quadriplegic for most of the atheletes, although I also thought it seemed like most of them were paraplegics.
Quadriplegia doesn't mean having zero motion and sensation in all four limbs. It just means that all four limbs have some degree of impairment. Many of these guys can still move their arms but have some difficulties with gripping or fine manipulation, and so are classified as quadriplegic. So I guess it's actually you who have no idea.
I've had a long day of listening to people run off at the mouth with the condescending attitude that only total ignorance can bestow, I come here to relax, and this is what I find. Millard, I'm most disappointed in you, because you appear to have seen the movie, but you clearly weren't paying any attention.
Just once today I'd like to see somebody take a second to learn before they opened their stupid fucking yaps, but the day is almost done and it looks like I won't get my wish. Here's hoping for better luck tomorrow.