Daniel Lerer MD, PRESENTER: Nothing to Disclose

Abstract: HTML Purpose: To describe the MR appearance of the normal medial meniscal root (MMR) as well as MMR pathology, which includes intrasubstance degeneration, partial and complete tears. Methods and Materials: The status of the MMR was assessed in 205 consecutive knee MR cases. The MMR was evaluated in the coronal and sagittal oblique planes. Results: A normal MMR, seen in 70% (144/205) of cases, is characterized by a homogenously low signal structure extending from the posterior horn of the medial meniscus to its central attachment, the posterior intercondylar fossa of the tibial plateau. Grade 1 or 2 intrasubstance intermediate signal typifies a degenerative MMR. Partial tears have increased signal within the MMR extending to the surface of the MMR. Complete tears are characterized by increased signal filling a through and through defect in the MMR. Conclusion: We found that pathology involving the MMR was relatively common. Coronal oblique plane imaging using a fluid sensitive sequence is most efficacious to differentiate a normal from a pathologic MMR and for distinguishing different types of meniscal root pathology.       Questions about this event email: hilary.umans@verizon.net

Lerer MD, D, MR Imaging Findings of the Medial Meniscal Root: Normal and Pathologic.  Radiological Society of North America 2003 Scientific Assembly and Annual Meeting, November 30 - December 5, 2003 ,Chicago IL. http://archive.rsna.org/2003/3102541.html