The ethmo-frontal angle: A new anatomic and radiologic landmark for use in sinus surgery

To identify anatomic and radiologic landmarks to assist with frontal sinus surgery. Retrospective review. Sinus CT scans of 50 patients were evaluated with respect to a new radiologic and anatomic landmark, the ethmo-frontal angle (EFA). Right-sided EFA ranged from 135 to 171 degrees. Left-sided EFA...

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Bibliographic Details
Published in:Otolaryngology-head and neck surgery 2009-05, Vol.140 (5), p.762-763
Main Authors: Becker, Samuel S., Beddow, Peter A., Duncavage, James A.
Format: Article
Language:English
Subjects:
Ethmoid Bone - anatomy & histology
Ethmoid Bone - diagnostic imaging
Ethmoid Bone - surgery
Frontal Sinus - anatomy & histology
Frontal Sinus - diagnostic imaging
Frontal Sinus - surgery
Humans
Otorhinolaryngologic Surgical Procedures
Retrospective Studies
Tomography, X-Ray Computed
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Summary:To identify anatomic and radiologic landmarks to assist with frontal sinus surgery. Retrospective review. Sinus CT scans of 50 patients were evaluated with respect to a new radiologic and anatomic landmark, the ethmo-frontal angle (EFA). Right-sided EFA ranged from 135 to 171 degrees. Left-sided EFA ranged from 136 to 167 degrees. Measurements of both sides displayed a normal distribution. When right and left sides within individuals were compared, there was no correlation to indicate a high degree of variation between any particular patient's right and left side EFA. The EFA is a new landmark to assist otolaryngologists during surgery on and around the frontal sinus. Normal values for this angle have been presented. Surgeons should be aware that asymmetry in a patient's EFA is common, and each side should be examined individually.
ISSN:0194-5998
1097-6817
DOI:10.1016/j.otohns.2008.12.043