Ditto on the X-ray's being done sitting up, things can be seen that can look completely different lying down.

Same goes for the MRI's, usually we are lying down, my physiatrist said when lying down for eg herniated discs can look different, they can pull away, relax so to speak, a more accurate way is to stand up which makes complete sense but don't think they are done standing up often.

X-rays though don't show as much as an MRI then they can still not be accurate so it's a game of different tests.

Chiro's can be great, unfortunately for me it made my neck/back worse so have to be careful.