Freiberg infraction

Freiberg disease, also known as a Freiberg infraction, is a form of avascular necrosis in the metatarsal bone of the foot. It generally develops in the second metatarsal, but can occur in any metatarsal. [Source: Wikipedia ]

Freiberg disease
Osteonecrosis of second metatarsal head
Is A
Osteonecrosis of the metatarsal head
Site-specific avascular necrosis