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. 2019 Sep 25;8(10):1540. doi: 10.3390/jcm8101540

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) US and (B) superposed US images using the long-axis approach show a central tear (white arrowhead and grey shade) of the articular disc (green shade), compatible with Class 1A triangular fibrocartilage complex injury. (C) US and (D) superposed US images using the short-axis approach in the same patient. The different color dashed rectangles are in accordance with the transducer positions in Figure 3. US: ultrasound; U: ulna; R: radius; L: lunate; T: triquetrum; ECU, extensor carpi ulnaris.