From the case:
Lichtman classification of Kienböck disease (illustration)
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Illustrations of the Lichtman classification of Kienböck disease.
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Case Discussion
The Lichtman classification of Kienböck disease is divided into:
stage I: normal radiograph
stage II: lunate sclerosis
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stage III
IIIA: lunate collapse
IIIB: lunate collapse and carpal instability
IIIC: chronic coronal lunate fracture
stage IV: carpal collapse and perilunate arthrosis (Kienböck disease advanced collapse)
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