Some folks think all quadriplegics are the same. Christopher Reeve is the person many compare all quadriplegics to. But the reality is that quadriplegia and all spinal cord injuries vary.
Classifications in wheelchair rugby demonstrate this. Check out the various function levels of players in this sport. You might be surprised to see how trunk strength, dexterity or lack of same, triceps and other factors can vary from quad to quad.
In the meantime, for some fun, check out some wheelchair rugby action:
and meet the US team