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Internal maxillary artery variability in the pterygopalatine fossa
1Department of Otolaryngology-Head and Neck Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD.
Summary
Variations in the pterygopalatine artery branch can hinder epistaxis treatment. This study classifies these arterial variations using cadaver dissections to improve surgical outcomes.
Area of Science:
- Anatomy
- Vascular Surgery
- Otolaryngology
Background:
- The pterygopalatine artery's branching in the pterygopalatine fossa is known to be variable.
- This anatomical variability can compromise the effectiveness of transantral ligation for persistent nasal epistaxis (nosebleeds).
Purpose of the Study:
- To systematically classify the branching patterns of the third segment of the internal maxillary artery within the pterygopalatine fossa.
- To provide a detailed anatomical understanding that can aid in managing persistent epistaxis.
Main Methods:
- Serial cadaver dissections were performed to meticulously examine the pterygopalatine fossa.
- Detailed observations of the anatomical course and variations of the third segment of the internal maxillary artery were recorded.
Main Results:
- The study identified and documented significant variations in the branching of the pterygopalatine artery.
- A novel, relatively simple classification system for these arterial variations was developed based on the cadaveric findings.
Conclusions:
- The proposed classification system offers a standardized approach to understanding pterygopalatine artery branching variations.
- This anatomical classification is expected to enhance the planning and success of surgical interventions for persistent epistaxis.