Reconstruction of Metacarpal Bone with Giant Cell Tumour by Metatarsal Bone: A Rare Case

Giant cell tumour (GCT) of the metacarpal bone is rare, and it behaves more aggressively with a higher recurrence rate as compared to other long bones. Modalities such as bone curettage with or without bone grafting, ray amputation, or wide resection and reconstruction have been described as surgical management for this condition. Wide resection (en block) is often preferred as it has a lower recurrence rate among the rests. Reconstruction techniques options available include vascularised or non-vascularised fibular graft, iliac crest strut graft with loss of metacarpophalangeal joint function or with metatarsal substitution resulting in a more preserved function of the hand. This case report is about a 15-year-old teenager girl with a giant cell tumor of her left second metacarpal bone, which was confirmed with a plain radiograph and magnetic resonance imaging. This case report focuses the operative technique of the metacarpal reconstruction using the third metatarsal bone. The aim was to preserve hand function and cosmesis while achieving good local control of the disease without compromising the lower limb function. The transfer of osteoarticular ligamentous complex of the third metatarsal bone for the reconstruction of the second metacarpal bone defects is a possible operative procedure that provides good cosmetic and excellent functional outcomes while not compromising the donor’s foot function.