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Related Experiment Video

Updated: May 28, 2026

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration
05:04

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration

Published on: May 5, 2020

Facial Nerve Repair Using a Microsurgical Robot System: A Preclinical Study Using a Rat Model.

Yasutaka Umemoto1, Naoyuki Hatayama2, Tomohito Okubo2

  • 1From the Department of Plastic and Reconstructive Surgery, Aichi Medical University, Aichi, Japan.

Plastic and Reconstructive Surgery. Global Open
|May 27, 2026
PubMed
Summary

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Surgery today·2026

Robot-assisted surgery effectively repaired rat facial nerves as small as 0.8mm. This robotic approach achieved outcomes comparable to manual suturing, advancing supermicrosurgery for nerve repair.

Area of Science:

  • Microsurgery
  • Robotic Surgery
  • Neurosurgery

Background:

  • Robot-assisted surgery is expanding into supermicrosurgical applications.
  • Previous success in vascular anastomoses indicates potential for finer surgical tasks.

Purpose of the Study:

  • To evaluate a surgical assistant robot for facial nerve neurorrhaphy in a rat model.
  • To compare robotic performance against conventional manual microsuturing.

Main Methods:

  • Facial nerve coaptation was performed on rats using manual suturing (hand group) or a microsurgical robotic system (robot group).
  • Evaluations included suture time, immediate repair continuity, and histological continuity at 14 weeks.
  • Functional recovery was assessed via whisker movement and neural tracing.

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Facial Nerve Axotomy in Mice: A Model to Study Motoneuron Response to Injury
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Facial Nerve Axotomy in Mice: A Model to Study Motoneuron Response to Injury

Published on: February 23, 2015

Related Experiment Videos

Last Updated: May 28, 2026

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration
05:04

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration

Published on: May 5, 2020

Facial Nerve Axotomy in Mice: A Model to Study Motoneuron Response to Injury
10:11

Facial Nerve Axotomy in Mice: A Model to Study Motoneuron Response to Injury

Published on: February 23, 2015

Main Results:

  • A single surgeon could perform the robotic procedure unassisted.
  • Robot-repaired nerves as small as 0.8mm were successfully sutured.
  • Comparable suture times were achieved by the robot group after initial learning.
  • No significant differences in functional or morphological outcomes were found between groups at 14 weeks.

Conclusions:

  • Surgical assistant robots can reliably suture small-diameter rat facial nerves.
  • Robotic neurorrhaphy yields outcomes equivalent to manual coaptation.
  • Findings support robotic systems for trauma and nerve reconstruction, extending supermicrosurgery to peripheral nerve repair.