Serial imaging in a case of regional migratory osteoporosis

Regional migratory osteoporosis (RMO) is an uncommon disorder that predominantly affects middle-aged males, presenting as migrating arthralgia involving the lower extremities. It is a transient condition that involves joints without preexisting disease and resolves spontaneously without long-term sequelae. We describe serial imaging findings in a patient with RMO followed over a period using various imaging modalities which showed typical migrating osteopenia involving the knee, ankle, and foot.