Double PCL sign
*Pathology:  Meniscal bucket handle tear, with inner meniscal fragment displaced into the intercondylar notch, anterior to the PCL.   Double PCL sign occurs with medial meniscal tears only; the ACL prevents displacement of lateral meniscal fragments into the intercondylar notch, anterior to the PCL.
•
*Imaging findings:  Band of low signal intensity, anterior and parallel to the PCL, simulating the PCL (sagittal view).  Band of low signal intensity within the intercondylar notch, between the PCL and tibial plateau; associated truncation of triangular configuration of peripheral meniscus (coronal view).
•
*Note: The double PCL sign tear may be considered as a subset of fragment-in-notch type medial meniscal tears, in which the displaced fragment lies in the same sagittal plane as the PCL.