Which of the following is NOT a general category of spinal fixation?

The focus of the question revolves around identifying which category does not typically align with the established classifications of spinal fixation. The general categories of spinal fixation mainly revolve around how vertebrae interact and stabilize with one another, including aspects of joint mechanics and postural concerns.

Segmental mechanisms refer to the local interactions among spinal segments, where individual vertebrae can become fixed due to abnormal positioning or movement restrictions. This concept highlights the importance of each segment's contribution to overall spinal function.

Postural mechanisms involve how the body’s alignment and posture can affect the functionality and movement of the spine. Poor postural habits can lead to compensatory fixes in segments that may eventually lead to discomfort or dysfunction.

Tissue mechanisms broadly consider how various tissues—such as muscles, ligaments, and fascia—play a role in the stability and mobility of the spine. These mechanisms encompass how soft tissue interactions can influence the level of fixation within the spinal column.

Facet mechanisms specifically pertain to the interactions of the facet joints, which facilitate and restrict movement in the spine, creating a unique category of spinal fixation defined primarily by the movement dynamics of these articulations.

In contrast, the correct response indicates that "facet mechanisms" would not be categorized as a distinct mechanism of spinal fixation in