@boag Funnily enough, that's what makes it more believable for me; I can do all those things on my busted ass knee... It just really fucking hurts when I finally get the chance to relax, like I replaced all the cartilage in my knee with molten salt. Also, canes and walking staves are inconvenient as hell. Sure, they're great to take the pressure off, but forget using one of your hands for anything more than keeping track of the stupid thing, which makes doing most things more complex than they really need to be, and unless you genuinely look like you're in your 60s, you get a lot of funny looks; I once had security at some place give my cane a solid yank to make sure I wasn't just some dick carrying around a sword-cane, and another security officer at another place ask if I really needed it so they could confiscate it for as long as I was in the building. It's genuinely less of a headache to not use one at all unless I absolutely have to, which is why I just suck it up and deal with the pain while the various canes I've used over the years collect dust.
Granted, the MC doesn't have to really worry about that, but the point still stands that canes and walking staves are damned inconvenient; there's a good reason the sword was the preferred weapon of choice for civilians when a good polearm is superior in basically every respect: convenience. A polearm you have to carry, a sword you can strap to your belt and basically forget about. Just replace "polearm" with cane or walking staff.