Dr. Diduch, Associate Professor, Department of Orthopaedic Surgery, University of Virginia School of Medicine, Charlottesville, VA, is Editor of Sports Medicine Reports. Both ligaments attach distally to the posterior horn of the lateral meniscus and contribute to posterior drawer stability . 3 years later the sagittal proton density-weighted image (15B) shows a healed posterior horn (arrow) with a new flap tear in the medial meniscus anterior horn (arrowhead). Pathology - a tear that has developed gradually in the meniscus. Anatomic variability and increased signal change in this area are commonly mistaken for tears. {"url":"/signup-modal-props.json?lang=us"}, El-Feky M, Flipped meniscus - anterior horn lateral meniscus. Stay up to date with the latest in Practical Medical Imaging and Management with Applied Radiology. Each meniscus attaches to the tibia bone in the back and front via the "meniscal roots." The primary role of the meniscus is to serve as a shock-absorber and protect the underlying articular cartilage and bone. signal fluid cleft interposed between the posterior horn and the capsule Volunteerism and Sports Medicine: Where do We Stand? Tears MRI Gallery - MRI Knee - Meniscal tears - Radiology Masterclass The LaPrade classification systemof meniscal root tears has become commonly used in arthroscopy, and there is evidence that this system can be to some extent translated to MRI assessment of these tears ref. 2005; 234:5361. Ross JA,Tough ICK, English TA. Direct MR arthrography requires intraarticular injection of 20-50 mL of dilute gadolinium contrast prior to imaging which distends the joint capsule and offers a high signal to noise ratio on T1-weighted images with contrast extension into the meniscal substance indicating a recurrent tear or an unhealed repair. Heron, D, Bonnard C, Moraine C,Toutain A. Agenesis of cruciate The anterior horn of the menisci, especially the lateral meniscus, is an area commonly confused on MRI. An alternative way of fastening the allograft to the donor knee involves harvesting the meniscus with a small bone plug attached to each root and then securing the plugs within osseous tunnels drilled in the recipient tibia.
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