• Eur J Trauma Emerg Surg · Feb 2023

    Open reduction internal fixation of rib fractures: a biomechanical comparison between the RibLoc U Plus® system and anterior plate in rib implants.

    • Giovanni Oppizzi, Dali Xu, Tirth Patel, Jose J Diaz, and Li-Qun Zhang.
    • Department of Bioengineering, University of Maryland, 3102 A. James Clark Hall, College Park, MD, 20742, USA.
    • Eur J Trauma Emerg Surg. 2023 Feb 1; 49 (1): 383391383-391.

    ObjectivesIn this study, we assessed the bending strength of two surgical repairs of rib fracture using RibLoc® U Plus system made by Acute Innovations and the anterior plate by Synthes.MethodsAfter a rib fracture was created in seven pairs of cadaveric rib specimens, one side was repaired with the anterior plate and the other side repaired with the RibLoc U Plus® plate. Each of the rib is loaded using a custom device over 360,000 bending cycles to simulate in vivo fatiguing related to respiration. Upon completion of the cyclic loading, the specimens were compressively loaded to failure and the failure bending moment was determined.ResultsThe ribs repaired with the RibLoc U Plus® system showed 79% higher failure bending moment than that of the anterior plate, with a p value of 0.033. The ribs repaired with RibLoc U Plus® showed a trend of less stiffness reduction over the 360,000 loading cycles.ConclusionThe biomechanical study showed that the RibLoc U Plus® system is stronger in the bending moment loading of repaired ribs, possibly due to the U-shape structure supporting both the inner and outer cortices of a repaired rib.© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.

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