An implantable prosthesis including a base member, such as the stem of a hip joint prosthesis, having a porous region on its surface, and the region of porosity being coated with a bioabsorbable material, such as .alpha.-tricalcium phosphate, which enhances permanent bone ingrowth into the region. A...http://www.google.es/patents/US4863475?utm_source=gb-gplus-sharePatente US4863475 - Implant and method for production thereof
