What is the name of the fracture that is a transverse fracture of the diaphyseal region of the base of the fifth metatarsal?

The fracture that is specifically described as a transverse fracture of the diaphyseal region of the base of the fifth metatarsal is termed a Jones fracture. This type of fracture typically occurs at the metatarsal's metaphyseal-diaphyseal junction and is known for its relatively high risk of nonunion due to limited blood supply in the area.

In contrast, Lisfranc fractures involve the tarsometatarsal joints and typically result from a high-impact injury, commonly seen in sports or falls. March fractures, or stress fractures, are usually due to repetitive strain on the bone, frequently occurring in the metatarsals from long-distance running or military marches. Tillaux fractures occur in the distal fibula and are associated with the ankle joint, particularly in young patients, and are not related to the fifth metatarsal at all. Understanding these specific distinctions helps in diagnosing and managing the respective injuries effectively.