Demarcation Line of Tissue Compaction in Traumatic Brain Herniation: A Conceptual and Clinical Model

Supratentorial herniation represents not only spatial displacement but also a structured physiological degradation. The compaction model provides a dynamic framework for understanding herniation progression and may assist in bedside assessment, staging, and early intervention. The Hyper-H triad may serve as an early physiological indicator of impending herniation. Further prospective and imaging-based studies are warranted to validate this approach.