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  Indian J Med Microbiol
 

Figure 1A: Anteroposterior radiograph of pelvis. No lucency, sclerosis or subchondral collapse noted in the femoral head. Joint space is preserved Figure 1B: T2 weighted coronal section shows avascular necrosis involving bilateral femoral heads with reparative border appearing hypo/hyperintense (double rim sign) on right side indicating granulation and sclerosis respectively. Dark line bordering the AVN focus on left side represents sclerosis. The cartilage and acetabulum are normal Figure 1C: Axial T1 weighted image shows fatty high signal within the necrotic area and hypointense line around them due to reparative new bone

Figure 1A: Anteroposterior radiograph of pelvis. No lucency, sclerosis or subchondral collapse noted in the femoral head. Joint space is preserved
Figure 1B: T2 weighted coronal section shows avascular necrosis involving bilateral femoral heads with reparative border appearing hypo/hyperintense (double rim sign) on right side indicating granulation and sclerosis respectively. Dark line bordering the AVN focus on left side represents sclerosis. The cartilage and acetabulum are normal
Figure 1C: Axial T1 weighted image shows fatty high signal within the necrotic area and hypointense line around them due to reparative new bone