Magnetic Resonance Imaging

Musculoskeletal SystemMRI is widely used to assist in the diagnosis of joint injuries, bone marrow disorders, soft-tissue tumors, and other musculoskeletal abnormalities. Fibrocartilage and ligaments normally appear dark because of a paucity of mobile protons⁶¹. In the knee, MRI has a reported sensitivity of 75 to 100 percent for the identification of meniscal tears, as indicated by an increased signal intensity in the fibrocartilaginous meniscus that extends to an articular surface (Figure 6A). MRI has largely supplanted arthrography^62,63. Meniscal degeneration not seen at arthroscopy is detected as an increase in intrameniscal signal intensity; this finding is . . .