Central Hole Tear of the Discoid Meniscus of the Knee in Magnetic Resonance Imaging

2009 ◽  
Vol 33 (1) ◽  
pp. 155-159 ◽  
Author(s):  
Jin Wook Choi ◽  
Hye Won Chung ◽  
Jin Hwan Ahn ◽  
Young Cheol Yoon
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Central Hole ◽  
Resonance Imaging ◽  
Discoid Meniscus

MENISCAL ABNORMALITIES: DISCOID MENISCUS

2012 ◽  
Vol 15 (01) ◽  
pp. 1230001
Author(s):  
Vivek Pandey ◽  
Simon Nurettin van Laarhoven ◽  
Kiran K. V. Acharya ◽  
Sharath K. Rao ◽  
Sripathi Rao
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Plain Radiograph ◽  
Lateral Meniscus ◽  
Partial Meniscectomy ◽  
Discoid Lateral Meniscus ◽  
Resonance Imaging ◽  
Discoid Meniscus ◽  
Short Term ◽  
Ring Type

The discoid meniscus is the most common meniscal variant. The likely etiology being congenital, the condition usually affects the lateral meniscus. Poorly vascularized, thicker and unstable, the discoid lateral meniscus (DLM) is more prone to tears due to abnormal shearing forces. Watanabe et al. (1979) classified the discoid lateral meniscus into three types: Complete, incomplete and Wrisberg type; Monllau et al. (1998) added the ring type as the fourth variant. Pain and clicks/thud are the most common presentations. Plain radiograph and magnetic resonance imaging are helpful in confirming the diagnosis. Asymptomatic DLM is best left alone. For symptomatic complete and incomplete types, partial arthroscopic saucerization is the treatment of choice leaving behind a stable rim. The Wrisberg type needs peripheral stabilization with resection of excess rim, if any. Total meniscectomy should be avoided unless inevitable. Short term results after partial meniscectomy are good.

scholarly journals Anatomy, magnetic resonance and arthroscopy of the popliteal hiatus of the knee: normal aspect and pathological conditions

2021 ◽  
Vol 6 (1) ◽  
pp. 941-954
Author(s):  
Alberto Grassi ◽  
Nicola Pizza ◽  
Gian Andrea Lucidi ◽  
Luca Macchiarola ◽  
Massimiliano Mosca ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Meniscal Tear ◽  
Resonance Imaging ◽  
Discoid Meniscus ◽  
Popliteofibular Ligament ◽  
Complex Region ◽  
Pathological Conditions ◽  
Static Assessment ◽  
Bucket Handle

The popliteal hiatus is a complex region, formed by the confluence of various structures connecting the meniscus, popliteal tendon, tibia and fibula. The main structures that can be found are the three popliteomeniscal fascicles (anterior, postero-inferior and postero-superior), the lateral and posterior meniscotibial ligaments, the popliteofibular ligament and the meniscofibular fascicle. These structures can be identified in most cases using magnetic resonance imaging, and their ‘static’ assessment can be performed. Arthroscopic assessment is useful in identifying and testing ‘dynamically’ the integrity of the structures around the popliteal hiatus. Injuries or abnormalities of the popliteal hiatus and its structures could result in meniscal hypermobility and subluxation; however, these injuries are often unrecognized. Possible abnormalities in this region, apart from the well-known bucket-handle meniscal tear, are the Wrisberg Type III discoid meniscus, and meniscal fascicles tears. Cite this article: EFORT Open Rev 2021;6:941-954. DOI: 10.1302/2058-5241.6.200089

Usefulness of magnetic resonance imaging for detecting intrasubstance tear and/or degeneration of lateral discoid meniscus

1994 ◽  
Vol 10 (6) ◽  
pp. 645-653 ◽  
Author(s):  
Masayuki Hamada ◽  
Konsei Shino ◽  
Kiyoshi Kawano ◽  
Yutaka Araki ◽  
Yoshito Matsui ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Discoid Meniscus

scholarly journals Ipsilateral Medial and Lateral Discoid Menisci: A Rare Combination of Infrequent Anatomic Variants

2020 ◽  
Vol 10 ◽  
pp. 11
Author(s):  
Johnmark Farlett ◽  
Jonathan R. Wood
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Medial Meniscus ◽  
Lateral Meniscus ◽  
Thick Disk ◽  
Loss Of Stability ◽  
Resonance Imaging ◽  
Discoid Meniscus ◽  
Anatomic Variants ◽  
Knee Magnetic Resonance Imaging

A discoid meniscus is a thick, disk-shaped meniscus which is prone to tearing, degeneration, and loss of stability in the knee. A discoid meniscus most commonly affects the lateral meniscus, rarely the medial meniscus. Here, we present a case of an extremely rare medial and lateral discoid meniscus in the ipsilateral knee of a 10-year-old male. Ipsilateral medial and discoid menisci are incredibly rare and one must keep this entity in mind to avoid confusion while interpreting knee magnetic resonance imaging.

scholarly journals Discoid meniscus: current concepts

2020 ◽  
Vol 5 (7) ◽  
pp. 371-379
Author(s):  
Manuel Saavedra ◽  
Matías Sepúlveda ◽  
María Jesús Tuca ◽  
Estefanía Birrer
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Presentation ◽  
Lateral Meniscus ◽  
Asian Population ◽  
X Rays ◽  
Meniscal Tears ◽  
Resonance Imaging ◽  
Discoid Meniscus ◽  
Stable Fixation

Discoid meniscus is the most frequent congenital malformation of the menisci, and primarily affects the lateral meniscus; it is highly prevalent in the Asian population. The anatomic, vascular, and ultrastructural features of the discoid meniscus make it susceptible to complex tears. Discoid meniscus anomalies are described according to their shape; however, there is consensus that peripheral stability of the meniscus should also be defined. Initial workup includes plain X-rays and magnetic resonance imaging, while arthroscopic evaluation confirms shape and stability of the meniscus. Clinical presentation is highly variable, depending on shape, associated hypermobility, and concomitant meniscal tears. Treatment seeks to re-establish typical anatomy using saucerization, tear reparation, and stable fixation of the meniscus. Cite this article: EFORT Open Rev 2020;5:371-379. DOI: 10.1302/2058-5241.5.190023

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