MRI Appearance of Wrisberg Variant of Discoid Lateral Meniscus

Singh, Kush; Helms, Clyde A.; Jacobs, Marlene; Higgins, Laurence D.

doi:10.2214/ajr.04.1785

Cited by 70 publications

(19 citation statements)

References 9 publications

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“…Symptoms of discoid meniscus include insidious popping or snapping without a traumatic origin, which is associated with pain, giving way, effusion, quadriceps atrophy, limited range of motion, and clicking or locking28,34). Snapping knee syndrome, in which a clunk is heard at the end of flexion, is usually related to an unstable meniscus variant, such as the Wrisberg type35,36). In very young children (range, 3 to 4 years), snapping is often asymptomatic, whereas older children (range, 8 to 10 years) more commonly experience pain with activity37).…”

Section: Clinical Featuresmentioning

confidence: 99%

“…An abnormal, thickened, bow-tie appearance of the meniscus is suggestive of discoid meniscus28). In the Wrisberg variant, an MRI scan may show subtle anterior subluxation of the posterior horn of the lateral meniscus or high T2-weighted signal intensity, simulating a peripheral tear35). However, some authors have reported low sensitivity in detecting the lateral discoid meniscus in children and have suggested that MRI does not provide enhanced diagnostic utility over clinical examination44) because checking the stability of a discoid meniscus on an MRI scan is difficult, and some incomplete discoid menisci often look normal9,19).…”

Section: Diagnosismentioning

confidence: 99%

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Diagnosis and Treatment of Discoid Meniscus

Kim

Han

Lee

2016

Knee Surg Relat Res

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There is a greater incidence of discoid meniscus in Asian countries than in Western countries, and bilateral discoid menisci are also common. The discoid meniscus may be a congenital anomaly, and genetics or family history may play a role in the development of discoid menisci. Because the histology of discoid meniscus is different from that of normal meniscus, it is prone to tearing. Individuals with a discoid meniscus can be asymptomatic or symptomatic. Asymptomatic discoid menisci do not require treatment. However, operative treatment is necessary if there are symptoms. Total meniscectomy leads to an increased risk of osteoarthritis. Therefore, total meniscectomy is generally reserved for rare unsalvageable cases. Partial meniscectomy (saucerization) with preservation of a stable peripheral rim combined with or without peripheral repair is effective, and good short-, mid-, and long-term clinical results have been reported.

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Section: Clinical Featuresmentioning

confidence: 99%

Section: Diagnosismentioning

confidence: 99%

Diagnosis and Treatment of Discoid Meniscus

Kim

Han

Lee

2016

Knee Surg Relat Res

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“…Discoid menisci are most commonly observed on the lateral side and are more prone to wear and tear (Fig. 6) [19,20].…”

Section: Meniscal Lesions and Variantsmentioning

confidence: 99%

T2 black lesions on routine knee MRI: differential considerations

et al. 2015

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The majority of abnormal findings or lesions on T2-weighted fast spin-echo (FSE) magnetic resonance imaging (MRI) are hyperintense due to increased perfusion or fluid content, such as infections, tumours or synovitis. Hypointense lesions on T2-weighted images (both fat-suppressed and non-fat-suppressed) are less common and can sometimes be overlooked. Such lesions have limited differential diagnostic possibilities, and include vacuum phenomenon, loose body, tenosynovial giant cell tumour, rheumatoid arthritis, haemochromatosis, gout, amyloid, chondrocalcinosis, hydroxyapetite deposition disease, lipoma arborescens, arthrofibrosis and iatrogenic lesions. These lesions often show characteristic appearances and predilections in the knee. In this article, the authors describe the MRI features of hypointense T2 lesions on routine knee MRI and outline a systematic diagnostic approach towards their evaluation. Key Points • Hypointense lesions on T2 images (T2 Dark Lesions) encompass limited diagnostic possibilities. • T2 Dark lesions often show characteristic appearances and predilections in the knee. • A systematic diagnostic approach will help radiologists make the correct diagnosis.

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“…MRI can also provide information on intra-substance tissue, meniscal tear, and the presence of associated osteochondritis dissecans. Incomplete, Wrisberg ligament type or unstable, normally shaped, menisci are much more difficult to discern [42]. A ring-shaped meniscus is not easily distinguished from a bucket handle tear of the normal lateral meniscus using MRI [43].…”

Section: Magnetic Resonance Imagingmentioning

confidence: 99%

The discoid meniscus

Yaniv

Blumberg

2007

Journal of Children's Orthopaedics

103

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Discoid lateral meniscus is an intra-articular knee disorder typically presented in the young population and during adolescence. Different types of meniscal disorders and varied forms of presentation have been reported. The natural history depends on the type of anomaly and the presence of symptoms. Management of the disorder should be directed toward the resolution of the symptoms while preserving meniscal tissue and function. Modern surgical techniques enable suturing and preservation of meniscal tissue. The clinical manifestations, diagnostic modalities and criteria, accompanying conditions and practical management considerations are reviewed.

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MRI Appearance of Wrisberg Variant of Discoid Lateral Meniscus

Cited by 70 publications

References 9 publications

Diagnosis and Treatment of Discoid Meniscus

Diagnosis and Treatment of Discoid Meniscus

T2 black lesions on routine knee MRI: differential considerations

The discoid meniscus

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