Abstract: Objective　To explore the clinical value of using a self-initiated margin protection spacer device combined with the “eight-step method” in inhibiting scar hyperplasia during thyroidectomy via the anterior cervical incision approach. Methods　Patients who underwent unilateral thyroid lobectomy with isthmus resection + unilateral VI lymph node dissection via anterior cervical incision from June 2020 to December 2020 were randomly divided into two groups according to random number table method. The observation group was treated with a self-initiated margin protection spacer device combined with “eight-step method” to deal with incision, while the control group was treated with traditional suture method. The first follow-up period was set as 3 to 4 months after surgery, and the second follow-up period was set as 6 to 8 months after surgery. The Vancouver scar scale (VSS) and the Patient and observer scar assessment Scale (POSAS) were used to collect intraoperative and postoperative data of the two groups for statistical analysis. Results　There were no significant differences between the two groups in terms of gender, age, Body mass index (BMI), operation time, number of lymph node dissection in the central area and postoperative complication rate (P>0.05); During the first follow-up period, there were no significant differences in VSS and POSAS scores between the observation group and the control group (P>0.05), while during the second follow-up period, VSS and POSAS scores of the observation group were better than the control group, with statistically significant differences (P<0.05). Conclusion　The self-initiated margin protection spacer device can reduce the intraoperative tension and protect the flap for high-tension linear scars formed in the neck; The ”eight-step method” combines various means to intervene as early as possible and inhibit scar hyperplasia.

Key words: Eight-step method, 　Self-initiated margin protection spacer device, 　Scar hyperplasia, 　Scar assessment