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Figure A is a radiograph of a 35-year-old women who sustained an isolated left wrist injury after a fall onto an outstretched hand. She has been complaining of left dorsal wrist pain since the fall. Examination reveals a positive Watson's scaphoid shift test. What ligamentous structure is an important secondary stabilizer to prevent dorsal intercalated segment instability (DISI) deformity in this patient?
Transverse carpal ligament
Dorsal intercarpal ligaments
Triangular fibrocartilage complex
Dorsal lunotriquetral ligament
Volar lunotriquetral ligament
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