Complete peripheral vertical longitudinal tear of the posterior horn and body of the lateral meniscus has allowed the vast majority of the posterior horn to flip into the intercondylar notch and the body to flip directly posterior to a truncated anterior horn. There is resultant 'ghost meniscus sign' posteriorly with only a tiny remnant of peripheral meniscus and the meniscopopliteal fascicles evident. A double delta sign is seen anteriorly on the sagittal images while a double PCL sign is evident in the intercondylar region.