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Related Experiment Video

Updated: May 20, 2026

Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model

Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model

Published on: October 13, 2022

Does using an energized device in open thyroidectomy reduce complications?

Brian Hung-Hin Lang¹, Patricia Chun-Ling Yih, Grace Kin-Yee Hung

¹Division of Endocrine Surgery, Department of Surgery, University of Hong Kong, Pokfulam, Hong Kong SAR, China. blang@hkucc.hku.hk

The Journal of Surgical Research

|July 4, 2012

Summary

This study found that using reusable ultrasonic shears for open thyroidectomy significantly reduced operating time and permanent hypoparathyroidism rates. Vocal cord palsy rates remained comparable between the ultrasonic shears and conventional techniques.

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Area of Science:

Endocrine Surgery
Surgical Technology
Thyroid Procedures

Background:

Open thyroidectomy techniques vary, with energy devices potentially shortening procedure time but with unclear effects on complications.
Concerns exist regarding procedure-related complications, such as vocal cord palsy and hypoparathyroidism, in thyroidectomy.
Cost containment in healthcare necessitates evaluating the efficiency and safety of surgical tools.

Purpose of the Study:

To compare the rate of procedure-related complications between open thyroidectomy using reusable ultrasonic shears and the conventional technique.
To specifically evaluate the incidence of vocal cord palsy and hypoparathyroidism in both surgical groups.
To assess the impact of reusable ultrasonic shears on operative time and patient outcomes.

Main Methods:

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Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model

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A comparative study involving 508 patients undergoing open thyroidectomy.
Patients were divided into two groups: those using reusable ultrasonic shears (SonoSurg group, n=237) and those using conventional techniques (suture ligation and clips, n=271).
Reusable shears were autoclaved and replaced after 20 uses; outcomes were compared between groups.

Main Results:

The SonoSurg group demonstrated significantly shorter operating times (60 min vs. 105 min) compared to the conventional technique group.
Permanent hypoparathyroidism rates were significantly lower in the SonoSurg group (1.9% vs. 9.8%).
Temporary hypoparathyroidism rates were also lower in the SonoSurg group (12.4% vs. 25.5%), while permanent vocal cord palsy rates were similar (P=0.262).

Conclusions:

Reusable ultrasonic shears are associated with reduced operating time and lower rates of permanent hypoparathyroidism in open thyroidectomy.
The use of ultrasonic shears did not significantly increase the risk of vocal cord palsy.
This technology offers a potentially safer and more efficient approach to open thyroidectomy.