Vol. 7, Issue 1, Part A (2025)

Introduction: Mucormycosis is an angio-invasive fungal infection caused by fungi in the order Mucorales and is usually seen in the nose and para-nasal sinuses. We present a case of post Covid mucormycosis in the calcaneum in view of the rarity of the site. 
Case Report: A 59-year-old male patient came to the orthopaedics outpatient with a chief complaint of pain and swelling over the lateral aspect of the right hind foot for 5 months. Patient had a history of Covid-19 infection 6 months ago for which he was treated with intravenous steroids and oxygen supplementation therapy. Later he developed pulmonary Mucormycosis for which he was treated with Amphotericin B and Posaconazole for 3 months. The patient was assessed for his general condition and surgical debridement of the right calcaneum was done along with defect filling with bone cement. The intraoperative curetted tissue and pus was collected and sent for histopathological examination. Histopathology revealed fungal filaments with broad aseptate hyphae and right-angled branching and was diagnosed as Mucormycosis. The patient was immediately started on anti-fungal treatment and was treated with radical debridement and calcanectomy with partial talectomy. 
Conclusion: Mucormycosis species is a rare cause of osteomyelitis, the most consistent finding being localized pain. Therefore, the diagnosis of mycotic osteomyelitis should be kept in mind in all cases of treated Covid 19 patients and debridement tissue should be sent for microbiological and pathological study, for appropriate anti-fungal therapy.