Proximal fifth metatarsal fractures

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Podiatry

Background:

• The proximal fifth metatarsal is the most common site for foot fractures.
• Fractures in this region include diaphyseal stress fractures, Jones fractures, and avulsion fractures.
• Healing outcomes vary, with some fractures prone to nonunion or delayed healing.

Purpose of the Study:

• To review the classification, presentation, and management of proximal fifth metatarsal fractures.
• To highlight factors influencing healing and potential complications.
• To differentiate these injuries from other midfoot and ankle pathologies.

Main Methods:

• Review of existing literature on proximal fifth metatarsal fractures.
• Analysis of fracture types, anatomical locations, injury mechanisms, and radiographic findings.
• Discussion of treatment strategies and differential diagnoses.

Main Results:

• Proximal fifth metatarsal fractures present with distinct characteristics based on type (diaphyseal stress, Jones, avulsion).
• Avulsion fractures typically heal well, while fractures distal to the peroneus brevis insertion are at higher risk for nonunion.
• Accurate diagnosis is crucial for appropriate management and to avoid complications.

Conclusions:

• Understanding the nuances of each proximal fifth metatarsal fracture type is essential for successful treatment.
• Fractures distal to the peroneus brevis tendon require careful monitoring due to nonunion risk.
• A broad differential diagnosis is necessary for effective management of midfoot injuries.