Scottie dog sign explained

Scottie dog sign is a radiological sign which refers to the appearance of lumbar spine in oblique view X-ray.[1] In the X-ray, the spine can be visualised as the lateral view of a Scottie dog,[2] with the pedicle as the eye, the transverse process as the nose, the superior articular facet as the ear and the inferior articular facet as the front leg, spinous process as the body. It was once used as a diagnostic sign for lumbar spondylolysis, but it is not commonly in use nowadays because of the advent of more sensitive diagnostic methods such as the CT scan and MRI scan.[3]

Notes and References

  1. Millard . L. . The Scotty dog and his collar . The Journal of the Arkansas Medical Society . January 1976 . 72 . 8 . 339–40 . 129461.
  2. Baig . MN . Byrne . Fergus . Devitt . A . McCabe . J P . Signs of Nature in Spine Radiology . Cureus . 2018 . 10 . 4 . e2456 . 10.7759/cureus.2456 . free . 29888160 . 2168-8184. 5991933 .
  3. Morimoto . Masatoshi . Sakai . Toshinori . Goto . Tsuyoshi . Sugiura . Kosuke . Manabe . Hiroaki . Tezuka . Fumitake . Yamashita . Kazuta . Takata . Yoichiro . Chikawa . Takashi . Sairyo . Koichi . Is the Scotty Dog Sign Adequate for Diagnosis of Fractures in Pediatric Patients with Lumbar Spondylolysis? . Spine Surgery and Related Research . 29 May 2018 . 3 . 1 . 49–53 . 10.22603/ssrr.2017-0099 . 31435551 . 2432-261X. 6690120 .

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