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Wilkinson's syndrome (also known as Sclerotic pedicle sign) is a radiographic term which describes a unilaterally enlarged pedicle opposite a contralateral pars defect. The enlarged pedicle may due to stress hypertrophy, and changes may extend into the adjacent lamina and transverse processes.

The characteristic radiographic feature of Wilkinson's syndrome is a missing pedicle with a thick, sclerotic contralateral pedicle at the same level. This is sometimes referred to as a "winking owl sign".

References

1. ^ Yochum, Terry R. (2004). essentials of skeletal radiology. Lippincott Williams & Wilkins. p. 308. Retrieved 25 January 2018.
2. Marchiori, Dennis (2014). Clinical Imaging - E-Book: With Skeletal, Chest, & Abdominal Pattern Differentials. Elsevier Health Sciences. p. 347. ISBN 9780323261944. Retrieved 25 January 2018.
3. Court-Brown, Charles M.; McQueen, Margaret M.; Tornetta, Paul (2006). Trauma. Lippincott Williams & Wilkins. p. 62. ISBN 9780781750967. Retrieved 25 January 2018.

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