Fig. 4

Example of radiographic ongrowth score for endoprostheses (ROSE) using the porous bridging collar: a radiograph immediately post-implantation showing radiolucencies between the osteotomized bone and the extra-osteal portion of the porous collar; b absence of radiolucencies between the host bone and the collar medially and laterally, indicating a ROSE score of + 2 on this radiograph