What trauma would be induced from #10?

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

Answer: (A)

The main idea here is how cranial strains reflect the direction of the external force acting on the head. A lateral strain arises when the trauma is effectively side-to-side, pushing the skull laterally so that the SBS shifts toward one side. In a left lateral strain, the SBS moves toward the left, with the sphenoid and occiput rotating in opposite directions about a left–right axis and the temporal bones showing lateral patterning on the left.

So if the trauma described by #10 is a lateral force that would drive the SBS to the left, the left lateral strain best fits that force vector. The other patterns—torsions and vertical strains—are produced by different force directions (rotational around the vertical axis or vertical compression), so they don’t match a purely lateral impact as well.