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KMID : 1144520220340010035
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Knee Surgery & Related Research
2022 Volume.34 No. 1 p.35 ~ p.35
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Clinical significance and management of meniscal extrusion in different knee pathologies: a comprehensive review of the literature and treatment algorithm
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Makiev Konstantinos G.
Vasios Ioannis S.
Georgoulas Paraskevas
Tilkeridis Konstantinos
Drosos Georgios
Ververidis Athanasios
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Abstract
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The menisci are crescent-shaped, fibrocartilaginous structures that play a crucial role in the load transition and distribution of the contact forces along the tibiofemoral articulation. Meniscal extrusion (ME) is a radiological finding, especially in magnetic resonance imaging (MRI) scans, for which there has been growing interest in recent years. ME, in the coronary plane, is defined as the maximum distance of the most distal end of the meniscus from the border of the tibial plateau, where the tibial eminences are the most prominent, without taking into account the osteophytes. Although there is still controversy in the literature in respect of the optimal cutoff value, a threshold of 3 mm is considered significant. ME has no specific clinical finding or sign and it is encountered in many knee pathologies. It is associated with either rapidly progressive knee osteoarthritis or early onset of knee osteoarthritis and increased morbidity. In this review, we delineate the clinical significance of ME in various knee pathologies, as well as when, why and how it should be managed. To the best of our knowledge, this is the first study to elaborate on these topics.
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KEYWORD
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Meniscal extrusion, Centralization, Knee osteoarthritis, Root tears, Anterior cruciate ligament reconstruction (ACLR), Meniscal allograft transplantation (MAT)
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