What typically appears on a lateral view in a facet lock injury?

• A. Anteroposterior misalignment
• B. Fracture lines through the neural arch
• C. Anterior displacement and level of involvement
• D. Disc herniation

Answer: (C)

In a facet lock injury, typically observed on a lateral view is anterior displacement and level of involvement. This injury often results in the locking of the facet joints, which may lead to a misalignment between the vertebrae. The anterior displacement indicates that one vertebral body has moved forward relative to another, which can be critical in diagnosing the extent and nature of the injury.

The lateral view helps in visualizing this displacement, making it easier for healthcare professionals to assess the anatomical alignment of the spine. Understanding the specifics of the injury, including the level at which it occurs, is crucial for determining the appropriate management and potential surgical intervention.

In contrast, misalignment in the anteroposterior plane, fracture lines through the neural arch, and signs of disc herniation may not be the primary findings associated with a facet lock injury viewed laterally, focusing instead on the characteristic displacement and involvement of vertebral levels.