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The advantages of modified Thiel technique in head and neck surgical anatomy teaching

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Abstract

Purpose

Thiel’s body preservation method allows the donor body to retain color and soft tissue that are similar to those of a living individual. Since its initial description, the technique has not been developed much. Here, we propose a simpler protocol applied to the head and neck, making the technique easier, cheaper, and more accessible to a greater number of medical schools.

Methods

The modified Thiel technique was applied to three heads separated from the body, followed by 6 h of perfusion and 6 weeks of fixation. This technique was compared with formalin (three heads) and freeze (three heads) preservations during academic training in head and neck surgery. Anatomical dissections included a parotid gland dissection, a submandibular gland dissection, an otologic and an endonasal dissection. Twelve surgeons blindly assessed the three types of preservations using a standardized questionnaire.

Results

The modified Thiel technique made possible better quality of dissection and tissue identification, with the exception of endonasal dissection. Concerning the endonasal dissection, the modified Thiel technique ranked best for smell, but all other criteria ranked lower than the freezing method. For the submandibular and parotid gland dissections, the modified Thiel technique was ranked best, with statistically significant differences (p < 0.002) for all items. The modified Thiel technique also ranked significantly better during otologic surgery regarding the quality of the skin/eardrum, bone, and muscle, and the smell.

Conclusion

This study demonstrated that the modified Thiel technique is an embalming technique which improves the quality of head and neck surgical anatomy education.

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Caen anatomy laboratory.

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R software.

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Acknowledgements

The authors thank to body donors.

Funding

Caen anatomy laboratory, 2 rue Rochambelles, 14032 Caen, France.

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Authors and Affiliations

Authors

Contributions

MH: project development, data collection, and manuscript writing. EM: manuscript writing. SM: project development. VP: data collection, manuscript writing. JB: project development, manuscript writing. MH: manuscript writing.

Corresponding author

Correspondence to Maxime Humbert.

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Conflict of interest

No conflicts of interest.

Ethics approval

Not applicable. In 2019 and in December 2021, the Local Bioethics Commission had judged their advice was not applicable because we respect the consent given by the donor during his life.

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Each donor agrees to the use of their body for research or training purposes.

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Yes.

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Humbert, M., Micault, E., Moreau, S. et al. The advantages of modified Thiel technique in head and neck surgical anatomy teaching. Surg Radiol Anat 44, 345–352 (2022). https://doi.org/10.1007/s00276-022-02895-x

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  • DOI: https://doi.org/10.1007/s00276-022-02895-x

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