Figure 19: Examples of tibial (knee) stem design for EBM-fabricated Ti-6Al- 4V. (a) X-ray image for total knee replacement. ρρ denotes the highly crosslinked polyethylene pad fixed to the tibial stem platform which is invisible to the X-rays. F denotes femoral bone base while T represents the tibia (Courtesy Patricia Murr). (b) and (c) shows the CAD (mesh) model stem viewed at 45°C. (d) Examples of EBM fabricated stems with densities shown.