Final answer:
The oblique projection of the lumbar spine demonstrates the 'Scottie dog' configuration of the zygapophyseal joint.
Step-by-step explanation:
The projection of the lumbar spine that demonstrates the 'Scottie dog' configuration of the zygapophyseal joint is the oblique projection.
The oblique projection is an imaging technique used to visualize the spine by angling the X-ray beam at an oblique angle to the patient's body. This projection allows for a better view of the zygapophyseal joints, which are the facet joints that connect the vertebrae. The 'Scottie dog' configuration refers to the appearance of a dog's head and neck formed by the shape of the vertebral body, transverse process, and superior articular process.
The AP axial, lateral, and PA projections do not provide the same view of the zygapophyseal joints and therefore do not demonstrate the 'Scottie dog' configuration.