Notch on the Lateral Aspect of the Radial Metaphysis

A notch can be seen as a normal variant on the lateral aspect of the radial metaphysis. This notch will eventually fill in by overgrowth of the epiphysis of the radial head.

References

McCarthy SM, Ogden JA. Radiology of postnatal skeletal development. VI. Elbow joint, proximal radius, and ulna. Skeletal Radiol. 1982;9(1):17-26.