What defines the concept of 'Type III mechanics' in vertebral motion?

The concept of 'Type III mechanics' in vertebral motion is characterized by the principle that restrictions in one plane of motion will affect the motion in all other planes. This means that when a vertebra is restricted in its movement in one direction, it will also influence how that vertebra can move in the other two axes of motion—flexion/extension, side bending, and rotation. This interconnectedness highlights the complexity of spinal mechanics, where the vertebral segments do not operate in isolation but are influenced by each other through their movements.

By this definition, when a restriction is present in one plane, the ability of the vertebra to move in the other planes is compromised. Understanding this is crucial for osteopathic practitioners as it guides them in diagnosing and treating motion dysfunctions effectively. Recognizing the holistic interaction between different planes of motion fosters a comprehensive approach to structural assessment and treatment in osteopathic practice.