I guess it could potentially happen under certain conditions, I.E Highway driving, I would look into it, they can still be in alignment with the Toe & Camber, but the joint still damaged, just over bumps, humps, lumps, etc...

I would look into it and see for yourself how much play they have, I like to use a crowbar for this, & the 9 & 3 o'clock on the wheel to see for play, if you don't feel like taking the tire off.

I would start there man, My 0.02 cents.

Jeff