Crutches for a tall person (.5 miles from downtown)

I’m having a full knee replacement on this Thursday and I’m pretty sure they are sending me home with a walker, but I’d really appreciate it if someone could either give or lend me a set of tall crutches for the next few days before surgery and then after surgery when I’m done using the walker. I just feel too young to be using a walker! Lol

Thank you.