n :  osteochondrosis affecting the lunate bone - called also lunatomalacia 
 
Kien•böck, Robert (1871-1953), Austrian roentgenologist. Kienböck pioneered in radiology. From 1910-11 he published descriptions of dislocation of the hand and a slowly progressive chronic osteitis involving the lunate bone. The latter is now known as Kienböck's disease.
 
 
 
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