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Scotty dog appearance - oblique view

Case contributed by: Dr MT Niknejad
Modality: X-ray

Case Discussion:

On oblique views, the posterior elements form the figure of a Scottie dog with the transverse process being the nose, the pedicle forming the eye, the inferior articular facet being the front leg, the superior articular facet representing the ear, and the pars interarticularis (the portion of the lamina that lies between the facets) equivalent to the neck of the dog. If a spondylolysis is present, the pars interarticularis, or the neck of the dog, will have a defect or break. It often looks as if the dog has a collar around the neck.

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