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KMID : 0828620110150020108
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Journal of Korean Arthroscopy Society
2011 Volume.15 No. 2 p.108 ~ p.112
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MRI Study of the Degenerative Radial Tear of Medial Meniscus
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Kwak Ji-Hoon
Sim Jae-Ang
Kim Nam-Ki
Lee Beom-Koo
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Abstract
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Purpose: To evaluate the thickness of the posterior horn of the medial meniscus accompanying with degenerative radial tear.
Materials and Methods: We retrospectively reviewed 170 cases which show degenerative meniscal tear with variable degree of meniscal degeneration from February 2000 to February 2010. All cases were older than 40 years and 57 cases were men and 113 cases were women. Mean age were 55-year-old. We grouped the cases into 3 categories. Group A were composed with cases which showed horizontal and radial tear in posterior horn of medial meniscus. Group B showed horizontal tear only and group C showed intrasubstance degeneration without meniscal tear.
Results: The mean thickness of medial meniscus posterior horn in group A, B, C were 7. 44 mm, 6.52 mm, 6.04 mm respectively. Group A showed significant increase of the thickness of medial meniscus posterior horn than group B, C. Group B also showed significant increase of thickness than group C. The degree of meniscal degeneration was highest in group A, which showed significant higher meniscal degeneration than group B and C, and, group B showed higher degeneration than group C, however, there was no statistically difference between group A and B regarding the degree of meniscal degeneration.
Conclusion: The thickness of medial meniscus posterior horn was increased when accompanied with radial tear, which may elicit pain caused by meniscal impingement
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KEYWORD
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Meniscus, Radial tear, Thickness
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