The Wrisberg type discoid lateral meniscus is but one of several unstable lateral meniscal entities that may be encountered on MR imaging. This Web Clinic will discuss the anatomical features that stabilize the lateral meniscus, in particular the popliteomeniscal fascicles, and will review presentations of lateral meniscal instability seen with

The Watanabe classification recognizes three distinct variants of discoid meniscus: (a) the complete variant has a block-shaped meniscus that covers the entire tibial plateau; (b) the partial variant has a meniscus that covers 80% or less of the tibial plateau; and (c) the Wrisberg variant has a thickened posterior horn, lacks the normal posterior meniscal attachments, and can cause snapping knee syndrome . The modified Watanabe classification includes a ring-shaped meniscus with connection

Ohlert et al. Magnetic resonance imaging an arthroscopy of a discoid formation. MRI demonstrated a lateral discoid meniscus, partial rupture of the cranial. (2003) The clinical importance of meniscal tears demonstrated by magnetic resonance imaging in osteoarthritis of the knee. J Bone Joint Surg Am radiological diagnosis was realized by means of X-ray SPECT-bone scan. All Objectives: The authors report their experience in treating discoid menisci. Medie-/nyhetsföretag.

Quick Summary: A Discoid Meniscus is a congenital defect of the meniscus that is present at birth (congenital onset). Discoid meniscus Clinical presentation. Although frequently asymptomatic, discoid menisci are prone to cystic degeneration with Pathology. Discoid menisci have decreased collagen fibers and loss of normal collagen orientation, which predisposes Radiographic features. Radiographs may well The most prominent distinguishing features of discoid lateral meniscus on plain radiographs include widening of the lateral joint space and a high fibular head. 12,14,15 Additionally, marginal osteophytes and cupping or flattening of the lateral tibial plateau may be revealed.

Morphologically, there is poor constriction of the central portion and thickening of the free end. OBJECTIVE.

Feb 9, 2018 Magnetic resonance imaging and arthroscopy of a discoid lateral meniscus in a dog. S. Ohlerth. 1 Section of Small Animal Radiology, University

Discoid lateral meniscus is a common abnormal meniscal variant in children. A detailed history and physical examination, when combined with an MRI of the knee, can predictably diagnose a discoid meniscus.

THE DISCOID LATERAL MENISCUS (DLM) is an ana-tomic variant of the meniscus, in which the meniscus is thickened and discoid shaped, and the DLM covers a greater area of the tibial plateau than the normal meniscus. Discoid lateral meniscus (DLM) has a reported prevalence that ranges from 0.4 to 17% (1–3), occurring at a higher rate in Asian populations

Discoid meniscus 䡧On sagittal images, a continuous bow-tie appearance on 3 or more 4 mm slices (12 mm) 䡧Up to 2 mm higher than the opposite meniscus Discoid menisci of the knee are not uncommon, and the criteria for arthrographic diagnosis and the clinical symptoms are well known. Although enlarged menisci have been recognized at magnetic resonance (MR) imaging, there are no criteria for the MR imaging diagnosis. The authors describe 29 discoid menisci imaged by means of MR. A discoid meniscus was said to be present if three or more 5 … 2019-08-22 Hypermobile Discoid Lateral Meniscus Section. Musculoskeletal system . Case Type. Clinical Cases Authors. Ahmed Coronal PD Fat Sat MRI of the knee showing discoid lateral meniscus with peripheral separation of the meniscus .

Kim SJ, Moon SH, Shin SJ. Radiographic knee dimensions in discoid lateral meniscus: Comparison with normal control. Arthroscopy. 2000;16:511-516.
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They are incidentally found in 3-5% of knee MRI examinations. Epidemiology Discoid menisci are congenital, frequently bilateral (up to 50%) an The most prominent distinguishing features of discoid lateral meniscus on plain radiographs include widening of the lateral joint space and a high fibular head.

6, 7 Discoid menisci are markedly more Discoid menisci are a congenital meniscal variant commonly seen in the lateral compartment, with sporadic reporting of medial cases. It is reported to be present bilateral in up to 20% of patients. There is thought to be abnormal meniscal composition and altered knee kinematics causing increased incidence of tears and instability in the meniscus. Arthroscopy confirmed the discoid abnormality of the medial menisci.
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The Discoid Medial Meniscus Pitfalls and Review of the Literature. Ann Clin Case Rep. 2017; 2: 1361. Abstract. The discoid meniscus is a rare meniscal abnormality. Through this case of a patient with internal discoid meniscus, we propose to study that malformation, clinical and radiological presentation and therapeutic modalities.

discoid meniscus is larger than usual; also referred to as "popping knee syndrome" Epidemiology . incidence . present in 3-5% of population; etiology .

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The Wrisberg variant of the discoid lateral meniscus is a rare condition with a highly suggestive clinical history. The musculoskeletal radiologist should consider this diagnosis whenever a discoid lateral meniscus is identified because making this elusive diag-nosis may prove immensely useful for the orthopedic surgeon.

2008;37:30-32. Kim SJ, Moon SH, Shin SJ. Radiographic knee dimensions in discoid lateral meniscus: Comparison with normal control. Arthroscopy. 2000;16:511-516. Samoto N, Kozuma M, Tokuhisa T, Kobayashi K. Diagnosis of discoid lateral meniscus of the knee on MR imaging.

Discoid menisci of the knee are not uncommon, and the criteria for arthrographic diagnosis and the clinical symptoms are well known. Although enlarged menisci have been recognized at magnetic resonance (MR) imaging, there are no criteria for the MR imaging diagnosis. The authors describe 29 discoid menisci imaged by means of MR.

Doktor. Stephen Cohen. Webbplats om utbildning. Physiotutors. Webbplats om utbildning. MSK Radiology Genie.

The patient underwent bilateral meniscal saucerization, with no pain at We had an MRI done, and it was revealed that she had a discoid lateral meniscus but no evidence it was torn. The medial meniscus is intact.