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Updated: Sep 23, 2026

Three-Dimensional Reconstruction of Orbital Fractures
Published on: May 16, 2025
Pediatric orbital floor fractures: nausea/vomiting as signs of entrapment
Seth M Cohen1, C Gaelyn Garrett
1Department of Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, USA. seth.cohen@vanderbilt.edu
Insights
Nausea and vomiting in children with trapdoor orbital fractures indicate a high risk of inferior rectus muscle entrapment. Early recognition is crucial for better outcomes in pediatric orbital fractures.
Area of Science:
- Ophthalmology
- Pediatric Surgery
- Trauma Surgery
Background:
- Orbital floor fractures are common in pediatric trauma.
- Inferior rectus muscle entrapment can lead to significant morbidity.
Purpose of the Study:
- To determine if nausea and vomiting predict entrapment in pediatric orbital floor fractures.
- To assess the association between trapdoor fractures and inferior rectus entrapment.
Main Methods:
- Retrospective analysis of pediatric orbital floor fractures (1990-2001).
- Exclusion of zygomatic, naso-orbital ethmoid, and displaced orbital rim fractures.
- Data collection on fracture type, symptoms, ocular motility, and surgical outcomes.
Main Results:
- 29 orbital floor fractures identified; 25% experienced nausea/vomiting.
- 50% had trapdoor fractures, and 17% had inferior rectus entrapment.
- Nausea/vomiting with trapdoor fractures had an 83.3% positive predictive value for entrapment (P=0.002).
Conclusions:
- Children with trapdoor orbital fractures and nausea/vomiting face a high risk of inferior rectus entrapment.
- Prompt surgical intervention is often required for diplopia or gaze restriction.
- Some patients experience persistent gaze impairment despite treatment.
Objective:
We sought to explore whether nausea and vomiting are predictive of entrapment. Study design and setting We retrospectively evaluated the data regarding orbital floor fractures in children younger than 19-years-old presenting at a tertiary care center from 1990 to 2001. Zygomatic, naso-orbital ethmoid, and displaced orbital rim fractures were excluded from our analysis. Data on the fracture type, signs and symptoms, ocular motility, surgical repair, and resolution of diplopia were also collected.
Results:
Twenty-nine orbital floor fractures were identified. One fourth of the children had nausea/vomiting, and half had trapdoor fractures. Seventeen percent of patients had entrapment of the inferior rectus. The positive predictive value of nausea/vomiting with a trapdoor fracture for entrapment was 83.3% (P = 0.002, Fisher exact test). Half the patients required surgical intervention, most commonly for diplopia or gaze restriction. Gaze impairment did not resolve in 2 patients.
Conclusion:
Patients with trapdoor fractures who present with nausea/vomiting are at a high risk of inferior rectus entrapment and poor outcome.
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