What is the clinical significance of a scottie dog (pars interarticularis) fracture?

Can be the etiology of back pain. Treatment is conservative unless pain is unrelenting or there are neurologic deficits secondary to slipping vertebrae.





Source

Thompson, J. Netter's Concise Atlas of Orthopaedic Anatomy.

Image source: http://img.medscape.com/pi/emed/ckb/rehabilitation/305143-309614-310235-1705313.jpg