And of course the TSA in its infinite wisdom knows "who really needs a cane".
My canes make it less likely that I will fall over and that my stride will be more "normal" than if I walk without them, but I can "gimp" along without them until the pain finally shuts me down.
Anyone intent on illegal acts can pretend all sorts of ailments. A "stoma" bag for people with colon cancer can be genuinely inserted in the colon with chemicals applied to the openings to smell bad like a leaking bag and contain brown colored residue in the bag that is explosive material. Who in the TSA would know without doing a chemical analysis or having a explosives sniffer?
Bountyhunter