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Age / Sex : 71 / M
71/M
C.C.: Incidental knee MR findings
1) What is the structure arrows indicate? (Click to enlarge)
Courtesy: Won-Hee Jee, MD, Kangnam St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
Diagnosis: meniscal flounce
Discussion
Findings:
There is a flounce-like hypointense band in the free edge of the medial meniscus on sagittal fat-suppressed PD SPIR images.
Discussion:
A meniscal flounce is a fold visualized as a S-shaped fold in the free edge of a meniscus on sagittal MR images. A meniscal flounce is thought to be a transient physiologic distortion and may be related to meniscal locations on the tibial plateau. It may be changed by varying the knee position. A meniscal flounce should be considered a normal variant in the absence of other indications of a meniscal tear. A word meaning of flounce is a strip of decorative, usually gathered or pleated material attached by one edge, as on a garment or curtain.
References:
1. Yu JS, Cosgarea AJ, Kaeding CC, Wilson D. Meniscal flounce MR imaging. Radiology 1997;203:513-515 2. Park JS, Ryu KN, Yoon KH. Meniscal flounce on knee MRI: correlation with meniscal locations after positional changes. Am J Roentgenol 2006;187:364-370 The copyright of the images remains with the original supplier.
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