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Updated: Apr 24, 2026
A Revised Surgical Approach to Induce Endolymphatic Hydrops in the Guinea Pig
Published on: June 4, 2020
Micro-endoscopic ear anatomy of guinea pig applied to experimental surgery
Bruno Borges de Carvalho Barros1, José Santos Cruz de Andrade2, Leandro Borborema Garcia1
1Federal University of São Paulo.
Purpose:
To describe topographic and endoscopic anatomy of guinea pig ear for development of surgical approaches in experimental studies.
Methods:
Experimental study. Eight adult guinea pigs (Cavia porcellus) were used in this study. Four animals were described through endoscopic view and four animals were used to describe topographic anatomy.
Results:
The main structures of middle ear were well identified through endoscopy view: oval and round window, ossicles and vascular structures. Temporal bone position, landmarks and its relations to skull are perceived with topographic description.
Conclusion:
Topographic anatomic description allowed exposition of temporal bone relations for external surgical approaches. Alternatively, grooves and middle ear structures were identified and may be used to transcanal accesses.
