Kienbock's Disease, also known as avascular necrosis (AVN), is the avascular necrosis of the lunate which can lead to progressive wrist pain and abnormal carpal motion. Diagnosis can be made with wrist radiographs in advanced cases but may require MRI for detection of early disease.
There is no single cause of Kienbock’s disease. It can be caused by multiple factors such as:
Skeletal variations, Trauma, and other medical conditions: Kienbock’s disease can be found more commonly in people who have medical conditions that affect blood supply. It is also associated with diseases like lupus, sickle cell anemia and cerebral palsy.
Although there's no single cure for Kienböck's disease, medications, immobilizing the wrist and surgery have been used for the management of the disease. 
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