Deep lateral notch sign and double notch sign in complete tears of the anterior cruciate ligament: MR imaging evaluation

Deep lateral notch sign and double notch sign in complete tears of the anterior cruciate ligament: MR imaging evaluation

Author Grimberg, Alexandre Autor UNIFESP Google Scholar
Shirazian, Hoda Google Scholar
Torshizy, Hamid Google Scholar
Smitaman, Edward Google Scholar
Chang, Eric Y. Google Scholar
Resnick, Donald L. Google Scholar
Institution Univ Calif San Diego
Universidade Federal de São Paulo (UNIFESP)
Vet Adm San Diego Healthcare Syst
Abstract To systematically compare the notches of the lateral femoral condyle (LFC) in patients with and without complete tears of the anterior cruciate ligament (ACL) in MR studies by (1) evaluating the dimensions of the lateral condylopatellar sulcus; (2) evaluating the presence and appearance of an extra or a double notch and its association with such tears.This retrospective study was approved by our institutional review board, and informed written patient consent was waived. in 58 cases of complete ACL tears and 37 control cases with intact ACL, the number of notches on the LFC was determined, and the depth and anteroposterior (AP) length of each notch were measured in each third of the LFC. the chi-square test, t-test, and logistic regression model were used to analyze demographic data and image findings, as appropriate.Presence of more than one notch demonstrated a sensitivity of 17.2 %, specificity of 100 %, positive predictive value of 100 %, and negative predictive value of 43.5 % for detecting a complete ACL tear. Lateral third depth measurement (p = 0.028) was a significant associated finding with a complete ACL tear.A deep notch in the lateral third of the LFC is a significant associated finding with a complete ACL tear when compared with an ACL-intact control group, and the presence of more than one notch is a specific but insensitive sign of such a tear.
Keywords Magnetic resonance imaging
Anterior cruciate ligament of the knee
Language English
Sponsor VA Clinical Science Research and Development Career Development Award
Grant number VA Clinical Science Research and Development Career Development Award: IK2CX000749
Date 2015-03-01
Published in Skeletal Radiology. New York: Springer, v. 44, n. 3, p. 385-391, 2015.
ISSN 0364-2348 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 385-391
Origin http://dx.doi.org/10.1007/s00256-014-2056-6
Access rights Closed access
Type Article
Web of Science ID WOS:000348925400010
URI http://repositorio.unifesp.br/handle/11600/38809

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