you made an art guide for canes right? do you have any info for drawing crutches too?
nope, I don't use crutches! I think a few people in the notes of the cane post might have chimed in with their experiences, and some people might know of a post or offer their experience in the replies here if you're lucky!
But I suggest, in this order:
Looking into online stores for crutches and crutch accessories to learn about the varieties
Reading/watching medical resources for using the different types of crutches from physical therapists so you understand how they work and what they help with
and then finally looking to see if you can find community resources, tags, and posts from actual crutch users to do more research about lived experiences and actual use cases
The medical and store research up front will give you a solid baseline understanding of the many varieties of crutches and how they work, which is necessary information to have the proper language and knowledge so you can actually learn from real people what their experiences are truly like.
Good luck! Sorry I can't be more help.