Diagnosis Lunate avascular necrosis (Kienboeck’s disease)|
AP (A, C) and lateral radiographs of the left wrist show collapse of the left lunate (asterisk) with fragmentation (black arrows), from remote avascular necrosis. Also noticed is foreshortening of the ulna (white arrow). A shorter ulna, or negative ulnar variance, may lead to increased load across the radiolunate articulation with increased risk of lunate avascular necrosis.
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