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Knee MRI/Meniscus anatomy and pitfalls

[Anatomy_31] Anterior meniscofemoral ligament, ​​Anomalous insertion of the medi

by MSK MRI 2021. 10. 2.

Anomalous insertion of the medial meniscus (AIMM) into the anterior cruciate ligament (ACL) is rare.The AIMM has the same anatomical description as the anteromedial meniscofemoral ligament

It appears as a linear band isointense to the ACL and meniscus, which runs parallel to the ACL and demonstrates a hyperintense gap between it and the ACL
On MRI, this anomaly may be misinterpreted as an ACL tear, meniscal tear or infrapatellar plica.


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NOT ACL tear!