People often don't pay much attention to their toes but they're pretty important for balance. It must be difficult living with that injury.
Even here in -20 temps, I typically sleep in a t-shirt and shorts. Heat from my body warms up the little enclosed space under the blankets quite quickly and the overall temp is a lot more comfortable than being wrapped up in multiple layers that restrict movement.
In extremely cold, drafty situations (living in unheated bus) with only blankets rather than a sleeping bag, putting on clothes is necessary.
Of course, if you have a good sleeping bag, as little clothes as possible is how to sleep outdoor.
Note that I was living in a school dormitory with bedding provided by the dorm, so it met a local standard of reasonableness.