Carpal Disorders
A 28-year-old manual laborer presents with progressive dorsal wrist pain over 6 months. He has difficulty with grip strength and wrist extension. Radiographs show increased lunate density with some loss of lunate height. The ulna appears shorter than the radius on the PA view. MRI confirms avascular necrosis of the lunate. Regarding Kienböck disease (lunate avascular necrosis):
Mark each as TRUE or FALSE
Kienböck disease is avascular necrosis of the lunate; the exact etiology is unknown but is associate...
The Lichtman classification stages Kienböck disease: Stage I (normal radiographs, MRI shows decrease...
Positive ulnar variance is the primary risk factor; the disease is most common in elderly women; the...
Treatment varies by stage: Stage I/II with negative ulnar variance may benefit from radial shortenin...
Clinical presentation includes dorsal wrist pain, weakness, decreased range of motion, and tendernes...
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Click T (True) or F (False) for each option