Abstract
BackgroundChest blunt trauma (CBT) and the resultant rib fractures often lead to thoracic collapse. The purpose of this study was to explore the effect of displacement of the rib fracture and thoracic collapse on the thoracic volume by using normal chest CT data.MethodsIn this retrospective study, seven consecutive normal participants were selected from our hospital between June and July 2018. Normal thoracic models were reconstructed, followed by simulation of lateral fractures through the 4th to 9th ribs under three collapse modes with 1–5 cm of collapse. The thoracic collapse models (n = 630) were reconstructed using 3Dmax 2014. We calculated the thoracic volume and reduction percentage for each thoracic collapse model. Linear regression-based comparisons of thoracic volume reductions were performed.ResultsIn all three collapse modes, the degree of the collapse was linearly correlated with the mean thoracic volume reduction. The reduction percentage in the posterior collapse mode was higher than that in the anterior collapse mode (P < 0.001). The largest volume reductions in the anterior, posterior, and simultaneous collapse models were in the 6th rib fracture model (P < 0.001), 8th rib fracture model (P < 0.001), and 7th rib fracture model (P < 0.001), respectively.ConclusionsThe influences of rib fracture displacement and collapse on the thoracic volume in the 6th through 8th ribs are critical in lateral rib fractures. For patients with 6th to 8th rib fractures and posterior rib collapse, surgical intervention to restore thoracic volume may be more essential.
Highlights
Chest blunt trauma (CBT) and the resultant rib fractures often lead to thoracic collapse
Severe rib fractures are often associated with thoracic collapse, which can significantly reduce the thoracic volume if not corrected in time [5, 6]
The purpose of this study was to explore the effect of displacement of the rib fracture and thoracic collapse on the thoracic volume by using normal chest computed tomography (CT) data
Summary
Chest blunt trauma (CBT) and the resultant rib fractures often lead to thoracic collapse. The purpose of this study was to explore the effect of displacement of the rib fracture and thoracic collapse on the thoracic volume by using normal chest CT data. Severe rib fractures are often associated with thoracic collapse, which can significantly reduce the thoracic volume if not corrected in time [5, 6]. Assessment of thoracic volume changes is critical for evaluation of the degree of injury and treatment decisions in patients with CBT. Chest X-ray (CXR) and chest computed tomography (CT) are conventional imaging methods for blunt trauma evaluation [7]. Optimal utilization of the limited physical and adjuvant examination information (e.g., from CXR) to assess the thoracic volume is necessary for clinical practice in such scenarios
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