Correlation between type of discoid lateral menisci and tear pattern

Bin, Seong‐Il; Kim, Jichul; Kim, Jong Min; Park, Soo-Sung; Han, Young-Kil

doi:10.1007/s00167-001-0273-8

Cited by 89 publications

(91 citation statements)

References 13 publications

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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: 43%

“…1 Schematic drawings of the modified Watanabe's classification for lateral meniscal variants: a a complete meniscus, b an incomplete meniscus, c a Wrisberg meniscus, and d ringshaped meniscus dial tear includes a flap and an oblique tear. When the horizontal tear was accompanied by another tear component, extent of meniscal resection depended mainly upon the latter according to Bin et al [3]; hence we subdivided horizontal tears into simple and combined horizontal tear groups. Also, we proposed a new tear Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Smillie [21] stated that a horizontal cleavage was the most common type of tear of a discoid meniscus. Bin et al [3] stated that 36% (39 of 108 cases) of patients had a horizontal tear component that was the most common type.…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 43%

Section: Discussionmentioning

confidence: 99%

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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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“…Hayashi et al 10 reported that the longitudinal tear is the most common type of discoid meniscus damage. However, Smilie 12 and Bin et al 24 stated that the horizontal cleavage injury is the most frequent type, and this injury mostly occurs as a degenerative tear and might be presented as an apparently invisible substantial tear. Moreover, a study by Ferrer-Roca and Vilalta 25,26 indicates that the degenerative horizontal cleavage most frequently occurs in the middle portion of the meniscus just at the portion of the discoid meniscus containing the MPB.…”

Section: Discussionmentioning

confidence: 99%

Collagenous Fibril Texture of the Discoid Lateral Meniscus

Cui

Min

2007

Arthroscopy: The Journal of Arthroscopic & Related Surgery

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“…Discoid meniscus is complicated by various tear patterns but there is no consensus regarding the relationship between the discoid anomaly type and tear type [9,20,42].…”

Section: Introductionmentioning

confidence: 99%

Epidemiologic, clinical and arthroscopic study of the discoid meniscus variant in Greek population

Papadopoulos

Karathanasis²,

Kirkos

et al. 2009

Knee Surg Sports Traumatol Arthrosc

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This retrospective study was aimed to investigate the epidemiologic, clinical and arthroscopic features of discoid meniscus variant in Greek population. We reviewed the cases of 2,132 patients who underwent knee arthroscopy between 1986 and 2004 and diagnosis of discoid lateral meniscus was established in 39 patients with mean age of 31.7 +/- 9.4 years old. Incidence of the discoid lateral meniscus variant was recorded at rate of 1.8% presenting no significant differences according to patient gender or lesion body side. Regarding the type of discoid dysmorphy, 23 cases attributed to complete type, 15 were incomplete and in one case, Wrisberg type was observed. Predictive values of the most commonly recorded physical signs in the clinical diagnosis of the discoid meniscus were analysed. Comparative evaluation of the long-term results of arthroscopic partial meniscectomy performed in patients with intact or torn discoid lateral meniscus and torn normally shaped lateral meniscus was carried out using Lysholm and IKDC scoring systems. Also, we investigated any correlation between dysmorphy type and tear pattern analysing the arthroscopic findings. Results demonstrated that the discoid meniscus lesion represents an atypical clinical entity in adults and no significant predictive value of the signs encountered in the clinical examination of the patients with discoid meniscus was observed. Clinical outcome after arthroscopic partial meniscectomy regarding the intact discoid meniscus group was superior in comparison with that of torn discoid meniscus cases. On other hand, no difference in the result of partial meniscectomy between discoid and normal lateral meniscus tear groups was found. No statistically significant relationship between the type of discoid menisci and tear pattern or incidence rate of concomitant intraarticular lesions was confirmed.

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Correlation between type of discoid lateral menisci and tear pattern

Cited by 89 publications

References 13 publications

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

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

Collagenous Fibril Texture of the Discoid Lateral Meniscus

Epidemiologic, clinical and arthroscopic study of the discoid meniscus variant in Greek population

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