[Technics for postmortem removal of inner ear fluid].

Area of Science:

• Otolaryngology
• Forensic Science
• Anatomy

Context:

• Accurate sampling of inner ear fluid is crucial for post-mortem analysis.
• Existing classical methods for accessing endolymph and perilymph are often complex and yield limited sample volumes.
• The forensic significance of inner ear fluid analysis necessitates efficient and reliable sampling techniques.

Purpose:

• To describe and compare two distinct methods for collecting inner ear fluid from deceased individuals.
• To evaluate the simplicity and efficacy of the Trela (1975) method against the classical approach.
• To recommend an optimal technique for obtaining inner ear fluid for forensic applications.

Summary:

• Two techniques for sampling inner ear fluid (endolymph and perilymph) from corpses were assessed: the classical method and Trela's (1975) technique.
• Trela's method involves chiseling the petrous crest to access the semi-circular canals, while the classical method requires chiseling the petrous bone and inserting a needle via the oval foramen.
• Experimental results indicate Trela's method is simpler and yields larger fluid volumes than the classical method.

Impact:

• Trela's method is recommended for future studies due to its improved efficiency and sample yield.
• This technique can enhance the reliability and scope of forensic investigations involving inner ear fluid analysis.
• Facilitates further research into the potential forensic applications of endolymph and perilymph composition.