Which term describes a cranial strain pattern we see as Inferior Vertical Strain?

Which term describes a cranial strain pattern we see as Inferior Vertical Strain?

• A. Inferior Vertical Strain
• B. Superior Vertical Strain
• C. Left Lateral Strain
• D. Right Torsion

Answer: (A)

Vertical strains describe movement of the sphenoid and occiput along the vertical axis, changing the height of the sphenobasilar synchondrosis (SBS). In inferior vertical strain, both bones migrate downward, so the SBS is displaced inferiorly. This downward shift is the hallmark of the inferior vertical pattern. The opposite, superior vertical strain, would involve upward movement of the bones and an elevated SBS. Left lateral strain and right torsion represent sideways displacement or rotation, not a downward vertical shift. So the term that best matches this pattern is Inferior Vertical Strain.

Vertical strains describe movement of the sphenoid and occiput along the vertical axis, changing the height of the sphenobasilar synchondrosis (SBS). In inferior vertical strain, both bones migrate downward, so the SBS is displaced inferiorly. This downward shift is the hallmark of the inferior vertical pattern. The opposite, superior vertical strain, would involve upward movement of the bones and an elevated SBS. Left lateral strain and right torsion represent sideways displacement or rotation, not a downward vertical shift. So the term that best matches this pattern is Inferior Vertical Strain.