J Korean Soc Radiol.  2021 Mar;82(2):455-461. 10.3348/jksr.2020.0051.

Snapping Knee Caused by a Superiorly Displaced Medial Meniscus: Knee Dynamic Ultrasonographic Findings

• Oh HS
• Kim TE

• KMID: 2514741
• DOI: http://doi.org/10.3348/jksr.2020.0051

Abstract

The causes of snapping knee include meniscal instability, but dynamic ultrasonographic findings have rarely been reported. Here, we report a case of snapping knee due to direct trauma to the right knee of a 79-year-old woman. Dynamic ultrasonography is used to confirm the snapping phenomenon caused by the anterosuperior displacement of the truncated posterior horn and body of the right medial meniscus.

Keyword

Knee; Ultrasonography; Meniscus; Torn Tibial Meniscus