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Saudi Journal of Medicine (SJM)
Volume-1 | Issue-02 | 46-49
Short Communication
Basics and mimics of Double Posterior Cruciate Ligament (PCL) sign
Dr Virender Kumar, Dr Mamta Singhroha
Published : Sept. 30, 2016
DOI : 10.36348/sjm.2016.v01i02.006
Abstract
Abstract: The double posterior cruciate ligament (PCL) sign is characteristic MRI sign of bucket handle tear of medial meniscus in patients with the intact anterior cruciate ligament. Bucket handle tear is displaced vertical longitudinal tear with displacement of the inner fragment (resembling the handle of a bucket) into intercondylar notch parallel to posterior cruciate ligament with residual larger peripheral part of the meniscus resembling the bucket. On MRI, the double posterior cruciate ligament (PCL) sign is seen as a low-signal-intensity band that is parallel and anteroinferior to the PCL on sagittal images. Double PCL sign is a highly specific indicator of bucket-handle tear of the medial meniscus. However, knowledge of mimics of this sign which include few normal and abnormal structures in the intercondylar fossa, such as meniscomeniscal ligaments, ligament of Humphrey and Wrisberg (accessory meniscofemoral ligaments), loose bodies, fracture fragments, double-barrelled PCL is important to avoid fallacies. Primary treatment of bucket handle tear is arthroscopic repair.
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