Abstract: A medullary rod has a peripheral wall defining the outer shape of the medullary rod, and inwardly delimiting a hollow space. The medullary rod also has a plurality of first partitions. The first partitions are generally parallel to one another, extend between the inner side of the medullary rod located along the inner edge of the long bone after implantation, and the outer side of the medullary rod located along the outer edge of the long bone after implantation. Each of the first partitions is integral with the peripheral wall at these inner and outer sides of the medullary rod.

Abstract: A medullary rod has a peripheral wall defining the outer shape of the medullary rod, and inwardly delimiting a hollow space. The medullary rod also has a plurality of first partitions. The first partitions are generally parallel to one another, extend between the inner side of the medullary rod located along the inner edge of the long bone after implantation, and the outer side of the medullary rod located along the outer edge of the long bone after implantation. Each of the first partitions is integral with the peripheral wall at these inner and outer sides of the medullary rod.

Abstract: A prosthetic device configured to function as a joint has a first joint component configured to be fixed to a first bone and a second joint component configured to engage the first joint component. The second joint component has an anchoring base configured to be fixed to a second bone, and a cup configured to be connected to the anchoring base. The cup has a cylindrical wall defining an outer surface of the cup, a cavity formed by a spherical recess inside of a circular edge at a top of the cylindrical wall, and an attachment post extending away from the cavity and configured to connect to the anchoring base. The attachment post is aligned with a center of a circle defined by the circular edge and an axis of the attachment post is parallel to the cylindrical wall.