Magnetic Resonance Signal Abnormalities within the Pericruciate Fat Pad: A Possible Secondary Sign for Acute Anterior Cruciate Ligament Tears

Canadian Association of Radiologists Journal - Tập 68 - Trang 438-444 - 2017
Ferdinando Draghi1, Mario Torresi1, Luigi Urciuoli2, Salvatore Gitto3
1Radiology Institute, Università degli Studi di Pavia, Pavia, Italy
2Radiology Institute, Seconda Università degli Studi di Napoli, Naples, Italy
3Postgraduate School in Radiodiagnostics, Università degli Studi di Milano, Milan, Italy

Tóm tắt

Purpose The study sought to investigate the presence of magnetic resonance (MR) signal alterations within the pericruciate fat pad in patients with an acute anterior cruciate ligament (ACL) tear as well as evaluate its diagnostic value in comparison with the main secondary signs of ACL tears. Methods Two musculoskeletal radiologists retrospectively reviewed knee MR examinations performed from May to October 2015. The ACL was considered as torn or intact based on either previous arthroscopic findings or unequivocal MR imaging interpretation if arthroscopic correlation was unavailable. Abnormalities of the pericruciate fat pad were evaluated as increased signal on the fluid-sensitive sequences; the main secondary signs of ACL tears were identified. Sensitivity and specificity were calculated for each sign. Results A total of 182 patients entered this study: 22 with an acute ACL tear, 160 with intact ACL. Signal hyperintensity of the pericruciate fat pad was demonstrated in all patients with an acutely torn ACL, resulting significantly different between individuals with intact ACL and those with ligament tear ( P < .0001). This sign was much more sensitive (100%) but less specific (72.5%-75%) than other secondary signs. Conclusions Signal hyperintensity of the pericruciate fat pad on the fluid-sensitive sequences is associated with acute ACL tears and could be considered as a possible indicator of these injuries.

Tài liệu tham khảo

10.1177/0284185116653280 10.1080/02841850500215907 10.1016/j.knee.2007.04.008 10.1016/S0030-5898(02)00022-6 10.1016/j.carj.2009.11.003 10.1007/s002560050096 10.2214/ajr.167.1.8659355 Falchook F.S., 1996, Can Assoc Radiol J, 47, 114 10.1148/radiology.188.3.8351329 10.1258/rsmacta.43.5.511 10.1148/radiology.182.1.1727286 10.2214/ajr.162.2.8310927 10.1148/radiology.187.3.8497637 10.1148/radiology.193.3.7972834 10.2214/ajr.162.1.8273648 10.1302/0301-620X.74B4.1624525 10.1016/0899-7071(92)90090-V 10.1007/978-3-319-08165-6 10.1007/s00256-012-1447-9 10.1148/radiology.181.1.1887042 10.2214/ajr.165.4.7676988 10.2307/2529310 10.2214/ajr.159.2.1632355 StandringS. KneeStandringS. Gray's Anatomy: The Anatomical Basis of Clinical Practice 40th ed 2008 Churchill Livingstone London 1393–41 10.2106/00004623-198062020-00013 10.1148/radiology.193.3.7972833 10.1007/s00167-003-0431-2 10.1016/j.mric.2014.07.011 10.1148/radiol.2363041003 Borja M.J., 2013, Am J Orthop, 42, E9 10.1007/s13244-016-0483-8 10.1007/s00256-003-0724-z 10.1007/s00256-005-0043-7
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Canadian Association of Radiologists Journal

Tập 68

438-444

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