Viswanath S, Chisthi MM, Kuttanchettiyar KG. Post-thyroidectomy hypocalcemia: Pathophysiology, prevention, and management strategies for the head and neck surgeon. World J Transl Med 2026; 12(2): 118436 [DOI: 10.5528/wjtm.118436]
Corresponding Author of This Article
Sindhu Viswanath, MS, Professor, Department of Otorhinolaryngology, Government Medical College Trivandrum, Thiruvananthapuram 695011, Kerala, India. sindhuvn@gmail.com
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Surgery
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review-article
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Viswanath S, Chisthi MM, Kuttanchettiyar KG. Post-thyroidectomy hypocalcemia: Pathophysiology, prevention, and management strategies for the head and neck surgeon. World J Transl Med 2026; 12(2): 118436 [DOI: 10.5528/wjtm.118436]
World J Transl Med. Jul 28, 2026; 12(2): 118436 Published online Jul 28, 2026. doi: 10.5528/wjtm.118436
Post-thyroidectomy hypocalcemia: Pathophysiology, prevention, and management strategies for the head and neck surgeon
Sindhu Viswanath, Meer M Chisthi, Krishnakumar G Kuttanchettiyar
Sindhu Viswanath, Department of Otorhinolaryngology, Government Medical College Trivandrum, Thiruvananthapuram 695011, Kerala, India
Meer M Chisthi, Krishnakumar G Kuttanchettiyar, Department of General Surgery, Government Medical College Kollam, Parippally 691574, Kerala, India
Author contributions: Viswanath S and Chisthi MM drafted the manuscript; Chisthi MM and Kuttanchettiyar KG acquired and analyzed the data; Viswanath S and Kuttanchettiyar KG vetted the manuscript; all authors approved the final version to be published and agreed to be accountable for all aspects of the work.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
Corresponding author: Sindhu Viswanath, MS, Professor, Department of Otorhinolaryngology, Government Medical College Trivandrum, Thiruvananthapuram 695011, Kerala, India. sindhuvn@gmail.com
Received: January 4, 2026 Revised: January 30, 2026 Accepted: March 4, 2026 Published online: July 28, 2026 Processing time: 209 Days and 10.4 Hours
Abstract
Post-thyroidectomy hypocalcemia, usually reflecting temporary or permanent hypoparathyroidism, remains the most frequent metabolic complication after bilateral thyroid surgery and central neck dissection, with reported transient rates of 10%-47.8% and permanent dysfunction in 0.5%-10.7% of patients. This review synthesizes current evidence on the pathophysiology, epidemiology, and clinical impact of post-thyroidectomy hypocalcemia, emphasizing mechanisms such as parathyroid devascularization, mechanical or thermal injury, and inadvertent excision, as well as demographic and surgical risk factors including female sex, younger age, autoimmune thyroid disease, total thyroidectomy, central neck dissection, re-operative surgery, and prior neck irradiation. Preventive strategies are discussed in detail, including preoperative vitamin D and calcium optimization, meticulous parathyroid-focused surgical technique, selective parathyroid autotransplantation, and the use of intraoperative and early postoperative parathyroid hormone (PTH) assays for real-time functional assessment. The review further outlines practical, PTH-based risk stratification algorithms that support safe early discharge while minimizing symptomatic hypocalcemia, and provides stepwise recommendations for the medical and intravenous management of acute hypocalcemia, as well as long-term care of permanent hypoparathyroidism. Finally, emerging technologies such as near-infrared autofluorescence, indocyanine green angiography, and deep learning–assisted parathyroid recognition, along with novel PTH replacement strategies, are highlighted as promising tools to further reduce complications and improve quality of life for thyroidectomy patients.
Core Tip: Post-thyroidectomy hypocalcemia is common but largely preventable when surgeons deliberately integrate parathyroid preservation, preoperative optimization, and hormone-guided risk stratification into routine thyroid practice. A multimodal strategy that combines vitamin D and calcium supplementation in selected patients, meticulous identification and vascular preservation of all parathyroid glands with selective autotransplantation, and early postoperative parathyroid hormone (PTH) measurement to guide targeted supplementation allows safe early discharge for most patients while minimizing symptomatic hypocalcemia, emergency visits, and readmissions. Emerging optical and digital adjuncts, together with evolving PTH replacement therapies, offer additional opportunities for head and neck surgeons to individualize care and further reduce the burden of post-thyroidectomy hypoparathyroidism.
