J Knee Surg 2018; 31(02): 130-140
DOI: 10.1055/s-0037-1620259
Special Focus Section
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Imaging of Ligamentous Structures within the Knee Includes Much More Than the ACL

Kara Gaetke-Udager
1  Department of Radiology, University of Michigan, Ann Arbor, Michigan
Corrie M. Yablon
1  Department of Radiology, University of Michigan, Ann Arbor, Michigan
› Author Affiliations
Further Information

Publication History

27 August 2017

19 December 2017

Publication Date:
10 January 2018 (eFirst)


Ligamentous structures of the knee are numerous and complex, including the anterior and posterior cruciate ligaments, medial and lateral collateral ligaments, ligaments of the posteromedial and posterolateral corners, and the anterolateral ligament. Clinical assessment after a knee injury is paramount and can direct both the clinician's choice of imaging study and the radiologist's interpretation. Imaging is crucial in that it provides additional information for diagnosis, management, and surgical planning. Multiple imaging modalities can be used in the evaluation of the knee injuries, with radiographs an important baseline study, magnetic resonance imaging as the best tool for a comprehensive assessment including cruciate ligament evaluation, and ultrasound useful in evaluating superficial structures. Knowledge of both normal and pathological appearances of ligamentous structures, as well as typical injury patterns, is useful not only for radiologists but also for clinicians who manage patients with knee pain.