Tram-track sign (knee)
Last revised by Rohit Sharma on 17 Jan 2022
Citation, DOI, disclosures and article data
Citation:
Macori F, Sharma R, Murphy A, Tram-track sign (knee). Reference article, Radiopaedia.org (Accessed on 19 Apr 2024) https://doi.org/10.53347/rID-96602
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rID:
96602
Article created:
16 Jan 2022,
Fabio Macori ◉
Disclosures:
At the time the article was created Fabio Macori had no recorded disclosures.
View Fabio Macori's current disclosures
Last revised:
17 Jan 2022,
Rohit Sharma ◉
Disclosures:
At the time the article was last revised Rohit Sharma had no recorded disclosures.
View Rohit Sharma's current disclosures
Revisions:
4 times, by
3 contributors -
see full revision history and disclosures
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The tram-track sign refers to the posterior cruciate ligament (PCL) appearance when it has a diffuse or partial thickening of the anteroposterior diameter greater than 7 mm. It is associated with longitudinal intraligamentous signal abnormalities showing fluid signal characteristics (hyperintensity in T2 weighted sequences) surrounded by hypointense fibers.
References
- Rodriguez W, Vinson E, Helms C, Toth A. MRI Appearance of Posterior Cruciate Ligament Tears. AJR Am J Roentgenol. 2008;191(4):W155-9. doi:10.2214/ajr.07.2921 - Pubmed
- McMonagle J, Helms C, Garrett W, Vinson E. Tram-Track Appearance of the Posterior Cruciate Ligament (PCL): Correlations With Mucoid Degeneration, Ligamentous Stability, and Differentiation From PCL Tears. AJR Am J Roentgenol. 2013;201(2):394-9. doi:10.2214/ajr.11.7400 - Pubmed
- Draghi F, Bortolotto C, Coscia D, Canepari M, Gitto S. Magnetic Resonance Imaging of Degenerative Changes of the Posterior Cruciate Ligament. Acta Radiol. 2017;58(3):338-43. doi:10.1177/0284185116653280 - Pubmed
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