What is the best view on X-ray to identify a scotty dog in the lumbar spine?

• A. AP view
• B. Lateral view
• C. Oblique view
• D. Flexion view

Answer: (C)

The identification of a scotty dog in the lumbar spine on an X-ray is best achieved using the oblique view. In this particular view, the anatomy of the lumbar vertebrae is oriented such that you can clearly visualize the “scotty dog” appearance, which is a term used to describe the anatomical features of the vertebrae when viewed from an angle.

In the oblique view, specific structures of the lumbar spine align in a way that mimics the shape of a dog, where the pedicle represents the eye, the inferior articular process acts as the nose, and the spinous process is the tail. This perspective allows for effective examination of the pars interarticularis, a common site for stress fractures and spondylolysis, which can be pivotal in diagnosing various lumbar spine conditions.

The other views provide different perspectives but do not afford the same visualization of the anatomical features characteristic of the “scotty dog.” The AP view primarily captures the frontal aspect and lacks the necessary angles to showcase the anatomy effectively. The lateral view gives a profile perspective that may be helpful for other reasons but does not reveal the important features of the scotty dog. The flexion view can show dynamic changes in verte