Dataset Information

A systematic review of the surgical anatomy of the orbital apex.

ABSTRACT:

Purpose

The orbital apex is the narrowest part of the orbit, housing the link between the intracranial cavity and orbit. Knowledge of orbital apex anatomy is crucial to selecting a surgical approach and reducing the risk of complications. Our purpose is to summarize current knowledge on surgical anatomy and attempt to reach a consensus on definition of the orbital apex.

Methods

The online databases of Embase, the Cochrane library, Web of Science and PubMed (MEDLINE) were queried in a comprehensive bibliographic search on the (surgical) anatomy of the orbital apex and consisted of a combination of two subjects, using indexed terms and free text: "Orbital Apex" and "Orbital Anatomy."

Results

A total of 114 relevant papers were included in this review. Numerous anatomical variations are described in the literature. Variations of the optic canal include duplication (0.64%) and keyhole anomaly (2.65%). Variations in pneumatization of the anterior clinoid process were unilateral in almost 10%, bilateral in 9%, and normal in 72%. A rare variant of the superior orbital fissure (SOF) is Warwick's foramen, which appears as if the lowest portion of the SOF was separated from the main fissure by a transverse bony bridge.

Conclusion

The definition of the orbital apex varies in the literature, and further research would most likely identify additional variations. A universal definition reporting these variations and pathology and imaging findings is essential for determining the optimal surgical approach to the orbital apex.

SUBMITTER: Engin ?

PROVIDER: S-EPMC7843489 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Publications

A systematic review of the surgical anatomy of the orbital apex.

Engin Ӧ Ӧ Adriaensen G F J P M GFJPM Hoefnagels F W A FWA Saeed P P

Surgical and radiologic anatomy : SRA 20201031 2

<h4>Purpose</h4>The orbital apex is the narrowest part of the orbit, housing the link between the intracranial cavity and orbit. Knowledge of orbital apex anatomy is crucial to selecting a surgical approach and reducing the risk of complications. Our purpose is to summarize current knowledge on surgical anatomy and attempt to reach a consensus on definition of the orbital apex.<h4>Methods</h4>The online databases of Embase, the Cochrane library, Web of Science and PubMed (MEDLINE) were queried i ...[more]

PMID: 33128648

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Project description:BackgroundA large number of empirical studies on the surgical timing and approach of orbital fracture have been published, but which surgical timing and approach is better is still a dispute. We use a systematic review and meta-analysis to solve this problem.MethodsWe performed a systematic search in the databases of PubMed, Cochrane Clinical Trials Database, Embase, and Web of Science for relevant literature. The search terms included those concerning or describing orbital fracture, timing, and approach, which are based on population, intervention, control, outcome, and study (PICOS) framework. The statistical software packages RevMan 5.4 and Stata 14.0 were used for data analysis. We sought to evaluate postoperative complications, and results were expressed as odds ratio (OR) with 95% confidence interval (CI). Forest plots, sensitivity analysis, funnel plots, Egger's test, and risk bias analysis were also performed on the included articles by using the Newcastle-Ottawa scale (NOS).ResultsA total of 7 trials involving 1,283 patients compared the surgical timing of ≤14 days versus >14 days, and another 14 trials involving 1,768 patients compared the surgical strategy of transconjunctival approach (TCA) with that of subciliary approach (SCA) for orbital fracture. The quality of all articles was higher than 7 points, which means all articles were at low risk of bias. Surgery conducted within 14 days significantly reduced the incidence of diplopia (OR: 0.53, 95% CI: 0.34 to 0.83, P=0.005) and enophthalmos (OR: 0.32, 95% CI: 0.12 to 0.83, P=0.02); TCA had a significantly lower incidence of ectropion (OR: 0.20, 95% CI: 0.10 to 0.38, P<0.00001), scleral show (OR: 0.22, 95% CI: 0.12 to 0.38, P<0.00001), and visible scar (OR: 0.15, 95% CI: 0.03 to 0.65, P=0.33) compared to SCA, but had a significantly higher incidence of entropion (OR: 5.41, 95% CI: 1.83 to 15.96, P=0.002). There was no significant publication bias among our included studies.ConclusionsThe operation in ≤14 days is better than that in >14 days. However, regarding the choice of surgical approach, TCA and SCA have their advantages and disadvantages, the exploration of which requires further research.

Dataset Information

A systematic review of the surgical anatomy of the orbital apex.

Purpose

Methods

Results

Conclusion

Publications

A systematic review of the surgical anatomy of the orbital apex.

Similar Datasets

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