Kienbock Disease
A 28-year-old right-hand-dominant male carpenter presents with 6 months of progressive right wrist pain and stiffness. He denies trauma. Examination reveals dorsal wrist tenderness, reduced grip strength, and limited wrist motion. Plain radiographs show increased density of the lunate with preserved carpal height. There is 2mm of negative ulnar variance. Regarding Kienbock disease and its pathophysiology:
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Kienbock disease is avascular necrosis of the lunate; the exact etiology is unknown but likely multi...
The lunate blood supply enters through palmar and dorsal poles with variable intraosseous anastomose...
The Lichtman classification stages Kienbock disease: Stage I - normal radiograph (MRI shows AVN); St...
Kienbock disease primarily affects elderly females with osteoporosis; positive ulnar variance (long ...
MRI is the gold standard for early diagnosis showing low T1 signal (edema or necrosis) before radiog...
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Click T (True) or F (False) for each option