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KMID : 0388420010110010133
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Konkuk Journal of Medical Sciences
2001 Volume.11 No. 1 p.133 ~ p.140
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Magnetic Resonance Imaging in Patient with Rupture of Anterior Cruciate Ligament: Importance of Direct Sign
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Shin Hyun-Joon
Lee Chang-Hee
Choi Young-Chil
Jeon Hae-Jeong
Park Jeong-Hee
Kim Dong-Heon
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Abstract
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It is important to know the normal size, shape, and signal intensity of anterior cruciate ligament in the evaluation of knee injury. Many studies have reported findings of tear or rupture as well as normal anatomy of these structure, especially with MR images. To our knowledge, there are few studies about normal structures of anterior cruciate ligament in MR images. The purpose of this study is to compare normal finding with tear of anterior cruciate ligament on MRI. Twenty-three cases with rupture of anterior cruciate ligament were evaluated on MRI, measuring the length, thickness, width of anterior cruciate ligament, and angles of anterior and posterior cruciate ligaments. Mean length, thickness, and width of anterior cruciate ligament in patients with rupture were 37.7±4.8mm, 9.0±1.2mm, 8.0±0.8mm, and mean angles of anterior cruciate ligament, and posterior cruciate ligament were 48.1±9.6°, 118.8±13.1°. Curvature ratio of posterior cruciate ligament was 0.25±0.09. The results showed significant differences between normal persons and patients with complete or partial rupture, and the mean angle and curvature ratio of posterior cruciate ligament which are known to related with indirect sign in tear of anterior cruciate ligament showed significant differences between ours and that of western countries. These results will be useful in the evaluation of patient with rupture of anterior cruciate ligament, especially on MRI.
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KEYWORD
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knee, MR, ligaments
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