According to the third principle of spinal mechanics, what does motion in one plane limit?

The third principle of spinal mechanics states that motion in one plane limits motion in the other two planes. This principle is rooted in the idea that the spine operates as a complex interrelated system, where movements are not isolated to individual segments. When movement occurs in one direction, it inherently modifies the capacity for movement in the orthogonal (or perpendicular) planes.

For instance, if flexion occurs, it impedes the ability for simultaneous lateral bending and rotation at that specific segment or adjacent segments. This is crucial for understanding how to evaluate and treat joint restrictions in osteopathic practice. Recognizing that engagement in one plane diminishes motion in the other planes helps osteopathic practitioners assess and approach musculoskeletal conditions more effectively, tailoring interventions that consider the restricted motions across the entire functional kinetic chain. This principle underlines the interconnected nature of spinal mechanics and is essential for developing therapeutic strategies aimed at restoring optimal function.