Magnetic Resonance Imaging of Cruciate Ligament Injuries of the Knee |
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Authors: | CK Kam Daniel WY Chee Wilfred CG Peh |
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Institution: | 1. Department of Diagnostic Radiology, Alice Ho Miu Ling Nethersole Hospital, Tai Po, N.T., Hong Kong SAR, China;2. Department of Diagnostic Radiology, Alexandra Hospital, Singapore, Republic of Singapore |
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Abstract: | The anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) are important stabilizers of the knee. These ligaments are commonly injured in sports and motor vehicle accidents. An accurate diagnosis of cruciate ligament injuries is vital in patient care. Magnetic resonance imaging (MRI) can diagnose cruciate ligament injuries with high accuracy. The imaging diagnosis should be based on primary signs, although the secondary signs are sometimes useful, particularly in chronic cases. The detection of associated injuries of other structures of the knee, including menisci, collateral ligaments, cartilage, and bone, are also important. Accurate interpretation of the MRI examination requires a meticulous MRI technique, knowledge of the imaging anatomy, and understanding of the lesion appearance. This pictorial essay reviews the MRI appearance of normal and injured cruciate ligaments. Mechanisms of injury, primary and secondary MRI signs, and associated abnormalities are discussed. |
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Keywords: | Magnetic resonance imaging Cruciate ligaments Knee injuries Ligament tears |
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