These are proximal shaft fractures that are entirely extraarticular. They often are stress fractures with a different mechanism than the proximal articular or proximal extraarticular avulsion fractures.
The clinical picture includes swelling, ecchymosis, and pain over the base of the 5th metatarsal.
Conventional radiographs of the foot (AP and lateral oblique views) are sufficient for diagnosis and treatment.
This fracture is known as the "march fracture" because of the occurrence in new military recruits on enforced long marches.
This fracture is insidious in nature and not an acute event.
There are typically no associated injuries with these fractures.