European Spine Journal

, Volume 26, Issue 5, pp 1463–1469 | Cite as

The value of CT and MRI in the classification and surgical decision-making among spine surgeons in thoracolumbar spinal injuries

  • Shanmuganathan Rajasekaran
  • Alexander R. Vaccaro
  • Rishi Mugesh Kanna
  • Gregory D. Schroeder
  • Frank Cumhur Oner
  • Luiz Vialle
  • Jens Chapman
  • Marcel Dvorak
  • Michael Fehlings
  • Ajoy Prasad Shetty
  • Klaus Schnake
  • Anupama Maheshwaran
  • Frank Kandziora
Original Article

Abstract

Purpose

Although imaging has a major role in evaluation and management of thoracolumbar spinal trauma by spine surgeons, the exact role of computed tomography (CT) and magnetic resonance imaging (MRI) in addition to radiographs for fracture classification and surgical decision-making is unclear.

Methods

Spine surgeons (n = 41) from around the world classified 30 thoracolumbar fractures. The cases were presented in a three-step approach: first plain radiographs, followed by CT and MRI images. Surgeons were asked to classify according to the AOSpine classification system and choose management in each of the three steps.

Results

Surgeons correctly classified 43.4 % of fractures with plain radiographs alone; after, additionally, evaluating CT and MRI images, this percentage increased by further 18.2 and 2.2 %, respectively. AO type A fractures were identified in 51.7 % of fractures with radiographs, while the number of type B fractures increased after CT and MRI. The number of type C fractures diagnosed was constant across the three steps. Agreement between radiographs and CT was fair for A-type (k = 0.31), poor for B-type (k = 0.19), but it was excellent between CT and MRI (k > 0.87). CT and MRI had similar sensitivity in identifying fracture subtypes except that MRI had a higher sensitivity (56.5 %) for B2 fractures (p < 0.001). The need for surgical fixation was deemed present in 72 % based on radiographs alone and increased to 81.7 % with CT images (p < 0.0001). The assessment for need of surgery did not change after an MRI (p = 0.77).

Conclusion

For accurate classification, radiographs alone were insufficient except for C-type injuries. CT is mandatory for accurately classifying thoracolumbar fractures. Though MRI did confer a modest gain in sensitivity in B2 injuries, the study does not support the need for routine MRI in patients for classification, assessing instability or need for surgery.

Keywords

Thoracolumbar Trauma Fracture Classification Computerized tomography Radiograph Magnetic resonance imaging Survey 

Notes

Acknowledgments

AOSpine is a clinical division of the AO Foundation—an independent medically guided nonprofit organization. The AOSpine Knowledge Forums are pathology focused working groups acting on behalf of AOSpine in their domain of scientific expertise. Each forum consists of a steering committee of up to ten international spine experts who meet on a regular basis to discuss research, assess the best evidence for current practices, and formulate clinical trials to advance spine care worldwide. Study support is provided directly through AOSpine’s Research department and AO’s Clinical Investigation and Documentation unit.

Compliance with ethical standards

Conflict of interest

None.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Shanmuganathan Rajasekaran
    • 1
  • Alexander R. Vaccaro
    • 2
  • Rishi Mugesh Kanna
    • 1
  • Gregory D. Schroeder
    • 2
  • Frank Cumhur Oner
    • 3
  • Luiz Vialle
    • 8
  • Jens Chapman
    • 5
  • Marcel Dvorak
    • 4
  • Michael Fehlings
    • 7
  • Ajoy Prasad Shetty
    • 1
  • Klaus Schnake
    • 6
  • Anupama Maheshwaran
    • 1
  • Frank Kandziora
    • 6
  1. 1.Department of Orthopaedics and Spine SurgeryGanga HospitalCoimbatoreIndia
  2. 2.Thomas Jefferson University and the Rothman InstitutePhiladelphiaUSA
  3. 3.University Medical CenterUtrechtThe Netherlands
  4. 4.Vancouver General HospitalVancouverCanada
  5. 5.Harborview Medical CenterSeattleUSA
  6. 6.Unfallklinik Frankfurt am MainFrankfurtGermany
  7. 7.University of TorontoTorontoCanada
  8. 8.Catholic UniversityCuritibaBrazil

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