In Type I mechanics, what occurs first in the movement sequence?

In Type I mechanics, the movement sequence begins with sidebending. This principle is rooted in the observation of the spine and how it behaves when subjected to forces. In Type I mechanics, which describes the movement of the thoracic and lumbar spine with neutral mechanics, sidebending occurs first and is often coupled with rotation.

When sidebending is applied to a group of vertebrae, it leads to a natural compensatory rotation in the opposite direction. This is a crucial component of understanding how the spine stabilizes itself during movements, especially in a neutral position where there is neither flexion nor extension. As a result, recognizing sidebending as the initial action helps in accurately assessing and treating postural and structural issues in osteopathic practice.

This sequence is essential for practitioners because it informs clinical assessments, manual techniques, and treatment strategies for spinal dysfunctions. Understanding that sidebending initiates the movement allows osteopaths to develop a more comprehensive treatment approach by addressing mechanical imbalances from the ground up.