Lateral discoid menisci in children

Bellier, G; Dupont, Jean-Yves; Larrain, Mario; Caudron, Caroline; Carlioz, H

doi:10.1016/0749-8063(89)90092-3

Cited by 97 publications

(47 citation statements)

References 14 publications

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“…Although open meniscectomy has been reported to be satisfactory, arthroscopic surgery seems to give better results [1,2,13,22]. We believe that partial meniscectomy has the important advantage of leaving a rim of meniscus which has a biomechanical function, and our results of this technique are encouraging.…”

Section: Discussionsupporting

confidence: 62%

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Discoid lateral meniscus

Fritschy

Gonseth

1991

International Orthopaedics

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Section: Discussionsupporting

confidence: 62%

“…The first report of arthroscopic meniscectomy for a discoid meniscus was in 1982 [13], with other papers following [1,2,4,6,7,8,9,13,15,20,22].…”

Section: Introductionmentioning

confidence: 99%

Discoid lateral meniscus

Fritschy

Gonseth

1991

International Orthopaedics

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“…The proportion of Wrisberg type meniscus has been reported to be between 0% and 33% [6,8,10,12,[20][21][22] and we found four patients (4 knees, 2.4%) with it. For bilateral occurrence, Bellier et al [2] reported 20% of patients with a discoid meniscus, Bin et al [3] reported 4.9%, and our result was 3.8% (six patients).…”

Section: Discussionmentioning

confidence: 44%

An arthroscopic analysis of lateral meniscal variants and a comparison with MRI findings

Kim

Ihn

Park

et al. 2005

Knee Surg Sports Traumatol Arthrosc

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We reviewed 164 consecutive cases (158 patients) of arthroscopic examinations for lateral meniscal variants during the last 10 years. We classified lateral meniscal variants into four types by arthroscopic appearance, into six tear patterns by modifying O'Connor's classification, and compared magnetic resonance images (MRI) with arthroscopic findings. Regarding the four types, 131 cases were complete, 25 cases were incomplete, 4 cases were Wrisberg, and 4 cases were ring-shaped meniscus. The six tear patterns were as follows: 33 simple horizontal, 21 combined horizontal, 37 longitudinal, 27 central, 14 complex, and 12 radial tear. Among the 31 knees with a central tear or ring-shaped meniscus, we reviewed 25 MR images. Fifteen (60%) MRI findings were interpreted to represent a bucket-handle (displaced) tear of the normal C-shaped meniscus; 7(28%) MRI findings, a discoid meniscal tear; and the remaining 3(12%) MRI findings, a simple meniscal tear. Moreover, all ring-shaped menisci were interpreted as a displaced lateral meniscal tear on the MRI findings. Twelve patients (13 knees, 7.9%) had osteochondritis dissecans: Nine patients (10 knees) of them had a central tear, two patients (2 knees) of them had a simple horizontal tear of the discoid meniscus, and one patient (1 knee) had a ring-shaped meniscus. Twenty three patients (92.6%) with a central tear of the discoid meniscus did not have any traumatic events. For the differential diagnosis of a central tear or a ring-shaped meniscus from a bucket-handle tear of the normal C-shaped meniscus, we should take a careful history, in particular any traumatic events, we should also consider the possibility of misinterpreting the MR images though these images can provide additional information about associated abnormalities and probe carefully in the arthroscopic operations.

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“…These authors stated not all cases of lateral discoid meniscus show typical radiographic findings. There have been other radiographic findings of discoid meniscus such as cupping of the lateral aspect of the tibial plateau [3] and a blunted lateral tibial spine [1,14]. All of these findings are considered indirect radiographic signs of discoid meniscus, and none was described with these relatively high sensitivity, specificity, and positive and negative predictive values for radiographic diagnosis of the discoid meniscus.…”

Section: Discussionmentioning

confidence: 99%

The Condylar Cutoff Sign: Quantifying Lateral Femoral Condylar Hypoplasia in a Complete Discoid Meniscus

Ha¹,

Lee

Park³

2009

Clinical Orthopaedics &Amp; Related Research

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We describe the condylar cutoff sign, a radiographic sign in knees with a discoid lateral meniscus, for diagnosis of complete discoid meniscus. We retrospectively reviewed tunnel-view radiographs of 100 patients (100) knees including 50 with complete discoid lateral meniscus and 50 with normal menisci. All patients were 18 years of age or older. All of the knees were arthroscopically examined. We developed a method to measure the prominence of the femoral condyle adjacent to the intercondylar notch on a tunnel view of the knee. The prominence ratio, the ratio of the medial and lateral condylar prominence, was compared and analyzed. The measurements were performed by three observers on two separate occasions to determine reliability. The intraobserver and interobserver variability study revealed high reliability with correlation coefficients ranging from 0.86 to 0.99. Using a cutoff ratio of 0.8, we observed a major difference between the two groups and found the ratio had 76% sensitivity, 96% specificity, 95% positive predictive value, and 80% negative predictive value in every set of measurements. The sign has high specificity and reliability but might not apply to younger patients.

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Lateral discoid menisci in children

Cited by 97 publications

References 14 publications

Discoid lateral meniscus

Discoid lateral meniscus

An arthroscopic analysis of lateral meniscal variants and a comparison with MRI findings

The Condylar Cutoff Sign: Quantifying Lateral Femoral Condylar Hypoplasia in a Complete Discoid Meniscus

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