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Clinical History:
50 year old man with left knee pain which worsens with activity.
Diagnosis:
Radial tear with flipped meniscus.
MR Technique:
1.5 T (Siemens Verio) 15 channel knee coil; Image 1: Sagittal proton density turbo spin echo (TR/TE 4290/34 ms, slice thickness 3 mm, scan time 3 min 54 sec); Image 2: Coronal T2 turbo spin echo (TR/TE 5690/75 ms, slice thickness 3 mm, scan time 4 min 33 sec); Image 3: Axial GRE (TR/TE 50/23 ms, Echo 1 ms, slice thickness 2 mm, scan time 5 min 49 sec ).
Imaging Findings:
A complete radial tear is present in the posterior horn of the medial meniscus. The meniscal fragment is attached to the posterior root and flipped anteriorly into the intercondylar notch.
