Product Overview
The Evolution® medial-pivot knee system with BioFoam® cancellous titanium on the tibial implant is the next generation in cementless fixation. Alongside the medial-pivot knee system’s clinically demonstrated design, built on the latest kinematic evidence of the natural stability and motion of the knee, BioFoam® cancellous titanium is uniquely suited to meet the challenges of today’s patient population. By offering surgeons unparalleled biologic fixation and fixation, this novel material provides a true trabecular structure with enhanced rigid fixation to allow immediate fixation through an osteoconductive matrix.
BioFoam® features
• True trabecular architecture
• The structure of BioFoam® cancellous titanium acts as a biological scaffold designed to allow fast, fluid bone ingrowth. Osteoblasts are able to cling to the course titanium struts; conducting angiogenesis through the interconnecting pores.
• Compressive strength
• The structure of BioFoam® cancellous titanium resembles that of trabecular bone. The pore cell size averages 530μm and the diameter of interconnecting pores averages 200μm.
• Roughened to enhance immediate fixation
• High coefficient of friction
Clinical success of BioFoam® fixation
Initial and short-term fixation of cementless tibial implant is critical to early patient satisfaction and long-term biologic ingrowth. A recent 2015 study by Waddell et al demonstrated strong evidence early radiographic and functional outcomes.
Study highlights
• 104 TKA’s performed in 85 subjects by four surgeons
• Subjects were evaluated preoperatively, and at 6, 12, and 24 months postoperatively
• KSS scores and maximum flexion were significantly improved at 12 and 24 months
• No progressive radiolucencies
• Only 1 patient presented with a radiolucency around the tibial component (https://www.microportortho.com/products/knees/primary-total-knee-systems/evolution-medial-pivot-knee-systems/evolutionr-biofoamr)
