When a bone has to be replaced with an orthopaedic implant, the surgeon will have at his disposal implants of six different sizes. The best fit implant is inserted into the patient even though it is not a perfect fit. Customised implants have been available for many years but their designs are crude and they take weeks to design and manufacture making them expensive and of limited use. Complex Matters makes possible the process of designing and manufacturing a customised orthopaedic implant for the first time, something that can be done in a matter of hours.