In the neutral and pronation positions, the ECU tendon is centered in the groove in the distal portion of the ulna.
Note the normal tendency of the ECU tendon to sublux to the apex of the ulnar styloid at the ulnar border of the groove during supination.
Variations in length of distal extension of the ECU subsheath connecting the ulnar styloid process and superficial ligamentous fibers of the dorsal radioulnar ligament.
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#Wrist MRI, #Wrist anatomy, #wrist ligament, #안산에이스병원,#Triangular Fibrocartilage Complex, #Extensor Carpi Ulnaris, #pronation, #supination, #Dorsal Radioulnar Ligament,#Volar Radioulnar Ligament,#acehospital,
