Initial Imaging for Thoracolumbar Spine Trauma

Introduction to Imaging Guidelines

• The American College of Radiology recommends CT of the thoracolumbar spine without IV contrast as the best initial imaging study for detecting thoracolumbar fractures, with 94-100% sensitivity, due to its superiority over plain radiographs 1, 2, 3
• The American College of Radiology states that plain radiographs have poor sensitivity for thoracolumbar fractures, detecting only 49-62% of thoracic spine fractures and 67-82% of lumbar spine fractures 1, 2, 3, 4

Practical Imaging Approach

• The American College of Radiology suggests ordering CT thoracolumbar spine without IV contrast as the primary diagnostic test, with sagittal and coronal spine reformats from existing data being equally effective if the patient is already getting CT chest/abdomen/pelvis for other trauma evaluation 1, 2, 3
• The American College of Radiology recommends adding MRI thoracolumbar spine if any neurological deficits are present to evaluate for spinal cord injury, disc herniation, or epidural hematoma, as MRI changes management in 16-24% of cases 1, 5

Critical Considerations for Patients with Renal Failure

• The American College of Radiology advises avoiding IV contrast unless absolutely necessary due to renal failure status, and notes that hemodialysis patients have higher rates of osteoporosis and pathologic fractures, making thorough evaluation crucial 1, 2, 3, 6

Common Pitfalls to Avoid

• The American College of Radiology warns against relying on plain radiographs alone in high-risk patients, as they will miss 18-51% of fractures, and recommends screening the entire spine since 20% of spine injuries have a second noncontiguous spinal fracture 1, 2, 3
• The American College of Radiology emphasizes the importance of not delaying imaging if any neurological symptoms develop, requiring immediate MRI evaluation 1, 5