Friedrich disease

Friedrich disease is an eponymous name for osteonecrosis of the sternal end of the clavicle. It is a rare condition and documentation in the medical literature is scarce with most case reports dating from before 1990.

Epidemiology

It is more often encountered in children and adolescents .

Radiographic features

Radiograph and CT

Diffuse sclerosis of the clavicular head of the clavicle is the main finding . A central notch-like defect in the center of sternoclavicular articulation has also been described .

Treatment

It appears to be mostly a self-limited condition that can resolve spontaneously and responds to conservative treatment .​

Differential diagnosis

The general differentials consideration are those of a sclerotic clavicle.