In my fantasy world, which lacks a name currently, there is a race of what looks like a series of interconnected worms or maggots that is known for growing in and around skeletons using its own body to act as the skeletons muscles. Basically using the skeleton as both a shell and transportation (basically my, I think uniquish, skeleton hoard).
Now I'm wondering how would this creature reasonably bind the bones together? Bonus points for a way that would allow fluid motion.
Note: The feasibility of this race will come as a later question.