Which imaging modality provides detailed 3D fracture assessment after initial radiographs?

• A. Ultrasound
• B. Magnetic resonance imaging
• C. Computed tomography
• D. Nuclear medicine bone scan

Answer: (C)

Detailed 3D fracture assessment relies on imaging that shows fine cortical bone detail and can be reconstructed into three-dimensional views. Computed tomography provides cross-sectional images with high spatial resolution of bone, allowing precise depiction of fracture lines, fragment displacement, and how pieces align within joints. These capabilities enable accurate 3D reconstructions that are particularly valuable for planning surgery in complex, comminuted, or intra-articular fractures, especially when initial radiographs are limited.

Ultrasound mainly visualizes soft tissues and superficial bone surfaces, so it doesn’t reliably depict complex fracture geometry or provide true 3D fracture mapping. MRI offers excellent soft tissue and bone marrow information and can detect occult fractures, but its cortical bone detail and direct 3D fracture geometry are not as sharp or readily usable for surgical planning as CT, and it’s slower and more resource-intensive. Nuclear medicine bone scans are sensitive for detecting fractures, including occult ones, but they lack precise anatomic detail and 3D reconstruction capabilities.