Important Signs in Musculoskeletal MRI
Qian Dong *
Division of Musculoskeletal Radiology, Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5326, USA.
Jon A. Jacobson
Division of Musculoskeletal Radiology, Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5326, USA.
Catherine J. Brandon
Division of Musculoskeletal Radiology, Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5326, USA.
Gandikota Girish
Division of Musculoskeletal Radiology, Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5326, USA.
Yoav Morag
Division of Musculoskeletal Radiology, Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5326, USA.
Sung Moon Kim
Division of Musculoskeletal Radiology, Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5326, USA.
*Author to whom correspondence should be addressed.
Abstract
The purpose of this article is to review the common MRI signs of musculoskeletal pathology. In this article, 15 classic MRI signs used in musculoskeletal radiology are presented and described. These signs include the anterior drawer sign, bone bruise sign, bow tie sign, celery stalk anterior cruciate ligament (ACL), cyclops lesion, deep lateral femoral notch sign, double line sign, double Oreo cookie sign, double posterior cruciate ligament (PCL) sign, fat-blood interface (FBI) sign, fragment in notch sign, split fat sign, T-sign, target sign, and yo-yo on a string sign. It is important to recognize common signs in musculoskeletal MRI and understand the underlying pathologies for accurate image interpretation.
Keywords: Magnetic resonance imaging, MRI, musculoskeletal imaging