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First Dorsal Interosseous in Act

First Dorsal Interosseous in Act
(C) 2009, All Rights Reserved. authorizes the reproduction and use of this image for any educational, noncommercial purpose, so long as the image is not altered and appropriate credit is cited to and to the creator of the image.

The unnecessarily large green arrow indicates the EMG needle insertion point for the first dorsal interosseous (FDI) muscle.

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