The XL-Resurge Revision Stem is made of Titanium Medical Grade 5 ELI, whose biocompatibility has been proven by numerous histological studies of implant retrievals. The rough-blasted surface supports bone formation and, thus, generates reliable secondary stability. The characteristic narrow ribs on the XL-Resurge Revision Stem allows bone formation as well: the longitudinal furrows between the ribs provide room for the vessels in the marrow cavities to
regenerate. This is an effective prerequisite for reactive ossification and revascularization in the cortex. A fundamental advantage of Titanium Medical Grade 5 ELI is its modulus of elasticity, which can have particularly positive effects in revision surgery. This element is designed to fulfill a biomechanical role, in that it allows visible bone regeneration in the proximal femoral segment. The synergetic interaction between material, surface structure, and design of the XL-Resurge Revision Stem create idea conditions that allow bone formation.