A lot of that list is about the consequences of neuropathy; fundamentally, the lower extremities become numb.  The result is that you could step on a nail or other sharp object and never feel it (hence the 'never walk barefoot outside' warning) or develop a blister that would then fester (hence the 'check your shoes').  As far as the bruising and other effects, those are reversible.  But it takes quite a lot to get the circulation back.