• Jellina Mariska Huitema, Nynke van der Gaast, Ruurd Lukas Jaarsma, Job Nicolaas Doornberg, EdwardsMichael John RichardMJRDepartment of Trauma Surgery, Radboud University Medical Center, Radboud University, Geert Groteplein Zuid, 6525 GA, Nijmegen, The Netherlands., and Erik Hermans.
• Department of Trauma Surgery, Radboud University Medical Center, Radboud University, Geert Groteplein Zuid, 6525 GA, Nijmegen, The Netherlands. Jellina.Huitema@radboudumc.nl.
• Eur J Trauma Emerg Surg. 2024 Feb 1; 50 (1): 717971-79.

PurposeIn this systematic review, we evaluate the effect of radiographs and 2D and 3D imaging techniques on the interobserver agreement of six commonly used classification systems for tibial plateau fractures.MethodsIn accordance with PRISMA guidelines, PubMed, Cochrane, Embase and Web of Science were searched for studies regarding the effect of 2D and 3D imaging techniques on the interobserver agreement of tibial plateau classification systems. Studies validating new classification systems, not providing own data or only providing information on the interobserver agreement for radiographs were excluded. Studies were scored based on the ROBINS-I risk of bias tool.ResultsOur review analysed 14 studies on different classification systems used for tibial plateau fractures in clinical practice, with the Schatzker classification being the most commonly used classification system. The results showed that the addition of 2D CT led to a significant improvement of interobserver agreement for one study. However, other included studies showed varying levels of interobserver agreement, ranging from fair to substantial according to the interpretation by Landis and Koch. The addition of 3D CT resulted in a significant deterioration in one study for the Schatzker classification. Similar to the addition of 2D CT, the interobserver agreement for the Schatzker classification with the addition of 3D CT were heterogeneous ranging from fair to almost perfect according to the interpretation by Landis and Koch.ConclusionsThe use of 2D CT can be recommended for classifying tibial plateau fractures with the Schatzker classification, AO/OTA classification and Hohl classification. The value of 3D CT on the interobserver agreement of commonly used classification systems remains uncertain and unproven. Therefore, we do not recommend the use of 3D CT for the classification of tibial plateau fractures. Overall, the advancement of imaging techniques is not in line with the advancement in interobserver agreement on fracture classification.© 2023. The Author(s).

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