Abstract

BackgroundType I thyroplasty has been well-documented as a safe and effective treatment modality for vocal fold motion impairment, as well as other select cases of persistent glottic insufficiency. However, history of prior radiation to the neck has traditionally been viewed as a relative, if not formal contra-indication to this procedure. The objective of this systematic review was to analyze all available data in the literature on type I thyroplasty in previously irradiated patients and perform a meta-analysis assessing whether complications and revision rates are significantly different between radiated and non-irradiated patients. Secondary outcomes were to compare voice outcomes between these cohorts. MethodsSeveral databases were screened for relevant citations using the PICO process. The quality of studies and risk of bias were evaluated using the MINORS scoring system. Main endpoints for analysis in this study were complication rate and revision rate. Secondary endpoint was reported voice outcome. ResultsThree articles were included in the analysis. Zero major complications were reported, including no instances of implant extrusion or explantation. There was an 11.8 % rate of minor complications. There were similar rates of revision between radiation and control groups. There was no significant difference in voice outcomes between groups. The average MINORS score of the studies suggested a high risk of bias. ConclusionsBased on limited quality evidence, this review suggests that type I thyroplasty is safe and feasible in carefully selected irradiated patients, with comparable complication and success rates as their non-irradiated cohorts. Further large-scale studies are warranted.

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