An Unusual Presentation of Low-grade Chondrosarcoma of the First Metatarsal Bone requiring extensive Resection: A Case Report

Chondrosarcoma (CS) is one of the common malignant bone tumours arising from chondrocytes with variable degrees of malignancy. It is mainly noted in flat bones like the pelvis and scapula, and sometimes in long bones like the proximal femur. This case report describes a 40-year-old female who presented with pain over her right great toe for six months and swelling for four months. An open biopsy revealed low-grade CS. Subsequently, the patient underwent amputation of the first ray till the tarsometatarsal joint with meticulous dissection of the tumour mass. At eight years of follow-up, the patient had no recurrence and no functional disability. Therefore, in cases of low-grade CS, first ray amputation along with excision of the tumour mass helps avoid recurrence and metastasis, providing a satisfactory functional outcome.