Walking sticks

There has been plenty of discussion on this topic in the forum, check to see if any of these recent posts help: https://search.ricksteves.com/?button=&date_range=6m&filter=Travel+Forum&query=hiking+poles+carry+on&utf8=%E2%9C%93

It’s best if you check the TSA site for current and correct information.

https://www.tsa.gov/travel/security-screening/whatcanibring/items/walking-sticks
https://www.tsa.gov/travel/security-screening/whatcanibring/items/canes

You might ask the air carrier, as well.
I have not checked recently, but there was a time a few years back when TSA had no restrictions regarding carrying on a camera tripod but Delta prohibited that and allowed only inside or as checked bag.
I'm accustomed now to packing my travel tripod, so I haven't looked into it again.

Costco has collapsible trekking poles that will fit in medium bag diagonally.

The critical question is whether you need one to assist with your walking, that is, is it medically necessary? The difference is whether it's a medical device or sporting equipment.

Walking cane/stick, with no metal points - yes. Hiking poles with metal points - no.