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J Knee Surg 2022; 35(05): 498-501
DOI: 10.1055/s-0042-1743224
Special Focus Section

Review of Extensor Mechanism Injuries in the Dislocated Knee

Munachukwudi Okoye
1   Department of Radiology, University of Missouri, Columbia, Missouri
,
Abigail Wissman
2   Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio
,
Robert D. Wissman 
1   Department of Radiology, University of Missouri, Columbia, Missouri
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Abstract

Knee dislocations, aka multiligamentous injuries, are uncommon but devastating injuries often following high-energy trauma. Tears of the major knee stabilizers are well documented; however, injuries of the knee extensor mechanism are less commonly reported. The extensor mechanism is comprised of the patella, patellar tendon, and quadriceps tendons. Magnetic resonance imaging (MRI) is the preferred imaging modality of internal derangements of the knee due to its excellent soft tissue contrast. In this article, we will discuss the normal imaging findings of the extensor mechanism and review abnormalities following knee dislocation.

Keywords

knee dislocation - extensor mechanism - magnetic resonance imaging


Publication History

Received: 14 July 2021

Accepted: 23 December 2021

Article published online:
28 February 2022

© 2022. Thieme. All rights reserved.

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