Introduction . Osteonecrosis of the lunate, also known as Kienb?ck’s disease, primarily affects physically active men aged 20 to 40. It has a slow onset and long duration, with initial symptoms often going unnoticed. However, as the disease advances, symptoms gradually worsen, eventually resulting in loss of wrist joint function1.At present, based on the different manifestations of avascular necrosis in X-rays, Lichtman staging is commonly used clinically to determine the severity ...