Lots of research doesn't sit well with chiropractic because it isn't a lab. It isn't something you can just dissect inside a laboratory. And lots of from the answers are somewhat subjective. The individual feels better. The pain is less. Though you will find x-rays and leg-length checks that may be made.
The Art of Chiropractic
So what exactly is the skill of chiropractic?
To the observer, it is a spinal manipulation procedure. Which basically means you are handling someone's joints, mainly within the spine. Although chiropractors take a look at other joints too.
Due to the practice philosophy of chiropractic, the spine is much more important because it houses the mind and spinal cord. All the nerves flow from the spine. And the nerves control the organs and muscles.
In defining the skill there is actually a noticeable difference between manipulation and adjustment. Both of these terms get interchanged in some circles but they're different.
A manipulation isn't chiropractic!
This might shock you at first, but it's true.
A manipulation infers the practitioner is moving some pot without results of position or direction. Which means that the individual is attempting to mobilise some pot.
So if a drawer is jammed, and also you provide a push and shove, you are actually governing the drawer and its fitting!
It's stuck. You unstick it.
Chiropractors usually have preferred this term. This means that the direction of alignment is taken into consideration. You are correcting some pot in its relationship along with other joints in a certain plane.
Chiropractors call the misalignment from the spine a "listing." By this we mean, one bone in relationship to the other can be posterior left, which is what it is rotated. It may be posterior left and tilted down (called posterior left inferior), and so forth.
It got even more precise than this after the work of Drs John Grostic and Al Wermsing within the 30's and 40's.
They began to list the skull and atlas (the top spinal bone) in terms of degrees of displacement as based on x-ray. In this you may have for example, a Right 2 degrees on the Left 2 degrees, skull to atlas misalignment.
In the 1980's Dr Don Harrison from Wyoming, dealing with Dr Harry Wong, desired to learn more about the Grostic style listings in degrees.
They determined that head-to-shoulder postures were the reason for the degree misalignments.
Patterns such as rotations, tilts, and side and forward head carriage produced the various angles that Grostic practitioners had been observing for 4 decades.
A Grostic "against the kink" would be a rotation and "into the kink" a side bend. There's also a third type where the head side-tilts around the first vertebra (atlas) only.
The skill of Chiropractic involves the manual procedures, dexterity and skill learnt from chiropractic college. In some colleges they will use half-tyres to build up the muscle action required.
There's another thing called a speeder board, which helps for recoil movement.
In modern days, instruments (such as blocks and activators) are used. These require a comprehension in the practitioner in positioning depth.
These need a sensitivity in the chiropractor, and this is why it's an art.
It's okay to possess science, but a lot of it is feel. A lot of it is intention, a variety of it is care.