What is the risk associated with fractures in Zone 2 of the proximal fifth metatarsal?

• A. High risk of surgical intervention
• B. Risk of mal or non-union
• C. Increased chance of ligament tears
• D. Low likelihood of recovery

Answer: (B)

The correct choice highlights the risk of malunion or nonunion associated with fractures in Zone 2 of the proximal fifth metatarsal. This area, which corresponds to the proximal diaphysis and is known as the "Jones fracture" when fracture occurs at this site, has a relatively poor blood supply compared to other areas of the foot. This limited vascularization can hinder the healing process, making it more likely that the bone will either heal improperly (malunion) or fail to heal altogether (nonunion).

In clinical practice, this understanding is crucial for guiding treatment decisions. If a fracture in Zone 2 is suspected, careful assessment and potential intervention may be necessary to ensure proper healing and to avoid complications associated with mal or nonunion. This understanding aligns with the common clinical approach to managing fractures in this area, where close monitoring or surgical intervention may be required based on the severity and characteristics of the fracture.