MR imaging findings of Kienboeck's disease

To evaluate the MR imaging findings and gadolinium enhancing patterns of Kienboeck's disease. Thirteen patients with Kienbock's disease were included in this study. T1 and T2 or T2 weighted images(WI) were taken in all patients and gadolinium enhancement was performed in six patients. We compared MR signal intensity of lunates with that of normal bone marrow. MR imaging findings and stages according to Lichtman's classification were correlateds and we evaluated the enhancing patterns of the lunates and synovia. Stage II was found in five patients, stage III in seven, and stage IV in one. T1WIs showed low or focal iso signal intensity in all patients. T2WI showed low signal intensity in three patients and focal iso or focal high signal intensity in ten. There were no significant correlations between the signal intensity of lunates and stages. Synovial enhancement was detected in five patients. In four, the areas of focal iso or high signal intensity on T2WI were the enhanced areas of lunates. Kienbock's disease showed low signal intensity on T1WI in all patients and variable signal intensity on T2WI. There was no significant correlation between MR signal intensity and Lichtman's stage. Synovia and the areas of focal iso or high signal intensity on T2WI were frequently enhanced