Fragment-in-Notch Sign
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Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview
A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD

Diagnosis:

Bucket-handle tear of the menisci

Discussion:

The displaced fragment of a bucket handle tear of the meniscus can move medially to lie within the intercondylar notch. The fragment-in-notch sign is defined as a band like area of low signal intensity within the intercondylar notch, not appearing on the same slice as the PCL. The sign, when identified, can be valuable in picking up a bucket handle tear of the meniscus.


- Click on the image for a larger versionA - Click on the image for a larger versionB

References:

bulletWright DH, De Smet AA, Norris M: Bucket-handle tears of the medial and lateral menisci of the knee: value of MR imaging in detecting displaced fragments. AJR Am J Roentgenol 1995 Sep;165(3):621-5.          [See related articles]

 

 

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Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview
A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD