Objective: Inferior laryngeal nerve (ILN) palsy and hypocalcemia remain the two most frequent major complications after thyroid surgery. Their occurrences may be explained by the influence of factors related to the patient, the surgical procedure, thyroid pathology, or the surgeon's technique. This study aims To assess whether systematically following a rigorous surgical technique during thyroidectomy affects postoperative complications and long-term patient recovery.
Methods: We conducted a multicenter, cross-sectional study of prospectively collected data in five high-volume referral centers enrolling all patients who underwent thyroid surgery between April 2008 and December 2009. Inferior laryngeal nerve (ILN) palsy and hypocalcemia were systematically assessed during hospitalization based on objective criteria. A six-month follow-up was conducted in cases of early complications. Multivariate regression models were computed to quantify their relationship with potential risk factors.
Results: A total of 3574 thyroid procedures were completed. Non-visualization of the ILN during dissection and a large thyroid mass were major risk factors for permanent ILN palsy (OR, 4.17 and 2.61, p<0.01) and persistent complications after initial injury (OR, 4.17 and 2.42, p<0.05). The presence of thyroiditis on the surgical specimen was an independent risk factor for permanent hypoparathyroidism and poor recovery after initial dysfunction (OR, 1.76 and 1.88, p<0.05).
Conclusions: Thorough meticulous technique in thyroid surgery is a determinant of ILN function but fails to prevent persistent hypoparathyroidism.
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