An orthopedic implant includes a metal core having a first end, a second end, a first elastic modulus, and a first porosity. A proximal body is fused directly onto the metal core between the first and second ends. The proximal body has a second elastic modulus, which is less than the first elastic modulus,...http://www.google.es/patents/US6913623?utm_source=gb-gplus-sharePatente US6913623 - Two piecefused femoral hip stem
