What trauma would be induced from #4?

What trauma would be induced from #4?

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

Answer: (C)

The main idea here is how cranial strains describe the relationship of the sphenoid and occiput as the skull responds to trauma. In a torsion pattern, the sphenoid and occiput rotate in opposite directions about the same anteroposterior axis, and the SBS stays level. A left torsion means the sphenoid rotates to the left while the occiput rotates to the right. If the diagram labeled as #4 shows exactly that opposite rotation (sphenoid left, occiput right) about the AP axis with a level SBS, that is the left torsion pattern. That’s why it’s identified as the induced trauma pattern here. For comparison, a right torsion would be the mirror image (sphenoid right, occiput left). A left lateral strain would involve a lateral shift of the SBS with the bones rotating about vertical or oblique axes in a way that moves the cranial system sideways, not simply opposite rotation about the AP axis. A superior vertical strain would show vertical translation of the SBS rather than the opposite-direction rotation of the two bones.

The main idea here is how cranial strains describe the relationship of the sphenoid and occiput as the skull responds to trauma. In a torsion pattern, the sphenoid and occiput rotate in opposite directions about the same anteroposterior axis, and the SBS stays level. A left torsion means the sphenoid rotates to the left while the occiput rotates to the right.

If the diagram labeled as #4 shows exactly that opposite rotation (sphenoid left, occiput right) about the AP axis with a level SBS, that is the left torsion pattern. That’s why it’s identified as the induced trauma pattern here.

For comparison, a right torsion would be the mirror image (sphenoid right, occiput left). A left lateral strain would involve a lateral shift of the SBS with the bones rotating about vertical or oblique axes in a way that moves the cranial system sideways, not simply opposite rotation about the AP axis. A superior vertical strain would show vertical translation of the SBS rather than the opposite-direction rotation of the two bones.