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Kienböck's disease - Definition


Kienböck's disease results in the necrosis of one of the carpal bones of the wrist, the lunate bone. The wrist contains eight bones irrigated by small arteries. Osteonecrosis occurs when one of the arteries is blocked or reduced by the phenomenon of compression. No blood nourishes the bones and, when not supplied with oxygen and nutrients, bone tissue dies. Symptoms consist of wrist pain in the absence of trauma, stiffness and loss of strength, observed especially during a handshake. An x-ray of the wrist and sometimes scintigraphy are performed. The treatment of Kienböck's disease is surgery.