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Ultrasound of the Knee 

Ultrasound of the Knee
Chapter:
Ultrasound of the Knee
Author(s):

Yoav Morag

DOI:
10.1093/med/9780190938178.003.0125
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date: 09 December 2021

Chapter 124 discusses US scanning of the knee, which is commonly performed for assessment of superficial knee structures, such as the extensor mechanism tendons and collateral ligaments, as well as identification of Baker cysts or prepatellar bursae. Dynamic US evaluation, such as flexion/extension of the knee or varus/valgus stress maneuvers, may improve diagnostic performance and further characterize severity of tendon or ligamentous injury and ligament incompetence. US examination may be comprehensive or focused, with constant modification of patient and probe positioning to allow for optimal visualization of the knee structures. Common US artifacts, such as anisotropy of the extensor tendons or heterogeneous appearance of the distal joined attachment of the lateral collateral ligament proper and the distal biceps femoris tendon, should not be mistaken for pathology. Although parameniscal cysts can be readily identified by US, there is ongoing controversy regarding the role of US in evaluation of meniscal tears.

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