AEMCA Practice Exam

Where on the spine does axial loading typically occur?

1. C1-C3

2. T12-L2

3. L1-L3

4. T5-T10

The correct answer is: T12-L2

Axial loading typically occurs in the thoracolumbar region of the spine, particularly around the T12 to L2 vertebrae. This area is significant for axial loading because it is where the transition from the thoracic to the lumbar spine occurs, and it bears a considerable amount of stress and weight during activities, such as lifting or jumping. The vertebrae in this region are designed to withstand compressive forces, but they are also more susceptible to injury if subjected to excessive loads. The proximity of T12 to L2 means that axial loading events associated with trauma or stress are often concentrated in this area. This region is critical in providing support to the upper body while allowing mobility. Other sections of the spine, such as the cervical or more distal lumbar spine, may experience shear, tensile, or flexural loads but are not the primary sites for axial loading as seen between T12 and L2.