Machine Man - Max Barry (2006)
Charles Neumann is a engineer working for the R&D department of a large corporation. After losing a leg in an industrial accident, he finds himself unsatisfied with the quality of his prosthetic leg and sets out to improve upon the design. However, when he ends up making a false leg that works better than his real one, he undertakes drastic action to improve his body.
A darkly comic read, Machine Man explores the possibilities of human augmentation and considers just how far is "too far" when it comes to making our bodies "better".
-Stirling Gill-Chambers (Collingwood Chapter)