Giant cell tumours are aggressive lesions, albeit benign. Lesions in the hand, especially those arising from metacarpals require resection with adequate margins and definitive structural reconstruction to ensure preservation of hand architecture, function and cosmesis. Almost all the described reconstructive procedures require a stump of tumour free metacarpal base after resection, for reconstruction of the metacarpal. This report describes replacement of the entire metacarpal with a silastic prosthesis, in a case of giant cell tumour involving the entire metacarpal head and shaft to within 7 mm of the base.