These findings of altered movement and glide support the concept that altered mechanics of the sacroiliac joint are correlated with the presence of pain.
So if we say that the cause of most low back pain is not understood, it should mean that we do not know what mechanism is causing the low back pain most of the time. But that is not true. We can often palpate tight myofascial tissue or a dysfunctional joint that is causing back pain.
The application of this study is enormous. Many manual therapy professions employ joint mobilization techniques, either Grade IV and/or Grade V.
As a rule, moist heat followed by stretching is beneficial for spinal hypomobilities, and strengthening is beneficial for regions of spinal hypermobility.
Joint mobilization treatment (Grade IV or V) is the most effective treatment technique to remedy a spinal joint dysfunction hypomobility once it is present.
The two most common causes of a hypomobile joint dysfunction are tight muscles, especially smaller, deeper intrinsic muscles, and fibrous adhesions.
A joint functions to allow motion, so two forms of joint dysfunction exist: Hypomobile joint has restricted motion; Hypermobile joint has excessive motion.
Grades IV and V joint mobilization are essentially pin and stretch technique.
Bone “A” is pinned and then Bone “B” is moved relative to Bone “A.”