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The sensorimotor changes of the lower lip and chin after transoral endoscopic thyroidectomy vestibular approach

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The transoral endoscopic thyroidectomy vestibular approach (TOETVA) can lead to abnormal sensorimotor changes in the lower lip and chin because of its incision design. This study aimed to explore the surgical outcomes of these changes after TOETVA. A total of 122 patients who underwent TOETVA were reviewed. The original incision design was used for the 39 patients in group A and a modified incision design was used for the 83 patients in group B. The sensorimotor changes in the lower lip and chin were compared. Varying degrees of paresthesia of the lower lip and chin (PoLC) were noted in all group A patients. Approximately 20.5% of group B patients did not suffer from PoLC, and the degree of PoLC in group B was significantly lower (P < 0.001). Abnormal motor function of the lower lip was noted for 23.1% of the patients in group A and 2.4% of those in group B. The incision design plays an important role in the morbidity of sensorimotor changes in the lower lip and chin. Our modified incision design seems minimally invasive and feasible for patients who undergo TOETVA.

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Availability of data and material

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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This work was funded by the Taishan Scholars Program of Shandong Province (No. ts20190991).

Author information




All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by GZ, XW, GW, GW, HS and CM. The first draft of the manuscript was written by GZ and XW. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Haitao Zheng or Xicheng Song.

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Conflict of interest

The authors have no financial or proprietary interests in any material discussed in this article.

Research involving Human Participants and/or animals

The authors declare under their responsibility that all the procedures followed in this study were in accordance with the ethical standards issued by the national health and family planning commission and with the Helsinki Declaration. The ethics committee of the affiliated Yantai Yuhuangding Hospital of Qingdao University approved this study (Approval No.: 2020-012). This article does not contain any studies with animals performed by any of the authors.

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Informed consents were obtained from all patients involved in this study.

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Zheng, G., Wang, X., Wu, G. et al. The sensorimotor changes of the lower lip and chin after transoral endoscopic thyroidectomy vestibular approach. Updates Surg (2021).

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  • Vestibular incisions design
  • Minimally invasive
  • Mental nerve injury
  • Abnormal sensorimotor function