Talar Fractures and Dislocations: A Radiologist's Guide to Timely Diagnosis and Classification

Area of Science:

• Orthopedic Surgery
• Radiology
• Trauma Medicine

Background:

• The talus bone has unique vascular supply and anatomical features predisposing it to injury and osteonecrosis.
• Talar fractures, despite being less than 1% of all fractures, are linked to high-energy trauma and potential long-term morbidity.

Purpose of the Study:

• To review the imaging characteristics and injury patterns of talar fractures.
• To emphasize the importance of recognizing and appropriately managing these fractures to prevent complications.

Main Methods:

• Initial evaluation typically involves foot and ankle radiographs.
• Computed tomography (CT) is essential for assessing fracture extent, displacement, comminution, and intra-articular involvement.
• Classification systems like the modified Hawkins-Canale and Sneppen classifications aid in treatment guidance and prognosis.

Main Results:

• Talar fractures are categorized by region: head, neck, and body.
• Specific fracture types, such as crush comminuted central body fractures and radiographically occult lateral process fractures, carry significant risks.
• Subtalar dislocations frequently accompany talar fractures, requiring postreduction CT.

Conclusions:

• Accurate diagnosis and management of talar fractures depend on a thorough understanding of talar anatomy and injury patterns.
• Radiologists play a key role in facilitating timely and appropriate patient care through detailed imaging evaluation.