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. 2016 Aug 16;16(1):3–15. doi: 10.2463/mrms.rev.2016-0011

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© 2016 Japanese Society for Magnetic Resonance in Medicine

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Fig 15. — Degeneration with perforation of the central disc of the triangular fibrocartilage complex (TFCC), chondromalacia of the lunate and/or ulna, and lunotriquetral ligament (LTL) perforation (Palmer Class 2D). Magnetic resonance arthrogram (MRA) coronal proton density (PD)-weighted image (a), coronal fat suppressed (FS) T₁-weighted image (b), coronal FS PD weight image (c), and isotropic 3-dimensional (3D) coronal FS PD-weighted image (d) shows the degeneration and perforation of the central disc (thick arrows) and chondromalacia of the lunate with cartilage flap (thin arrows). A small and irregularly shaped LTL with oblique linear high signal (contrast) though its membranous portion (arrowheads) is visualized in (b and d), and intra-articular contrast extends into the midcarpal joint (open arrow in [b]), suggesting a LTL perforation.