What trauma would be induced from #5 (blue)?

• A. Left torsion
• B. Left lateral strain
• C. Inferior vertical strain
• D. Right lateral strain

Answer: (B)

In cranial evaluation, a lateral strain describes a side-to-side shear of the skull where the SBS shifts toward one side while the opposite side moves away. A left lateral strain means the skull is displaced to the left, with relative compression on the left side and expansion on the right. If the blue diagram shows the skull leaning or deforming toward the left, that pattern matches a left lateral strain. This is distinct from torsions (rotation around an anterior-posterior axis), vertical strains (movement along the vertical axis), or the mirror image right lateral strain. So the trauma pattern indicated by the blue image best fits a left lateral strain.