Hip Technologies
Trabecular Metal™ Technology
The Best Thing Next To Bone®
The cellular structure of Trabecular Metal resembles bone and approximates its physical and mechanical properties more closely than other prosthetic materials. The unique, highly porous, trabecular configuration is conducive to bone formation, enabling rapid and extensive tissue infiltration and strong attachment. Read more >
CSTi™ (Cancellous-Structured Titanium™) Porous Coating
CSTi porous coating has over 15 years of clinical experience with demonstrated success in both retrieval and long-term clinical studies.
Optimal Microstructure and Material Promote Bone Ingrowth
CSTi porous coating combines the excellent biocompatibility of titanium with an optimal structure for bone ingrowth. CSTi is manufactured through a proprietary process that sinters commercially pure titanium powder onto a titanium- or CoCr-alloy substrate. During the process, pores are created. Read more >
Metasul® Metal-on-Metal Technology Material
Material Key Factor: Carbon Content and Material Processing
Chemical composition and material processing are the key material factors controlling the wear behavior of metal-on-metal articulations.
Carbon Content Influences Wear Resistance
Two types of CoCr wrought alloy are available for metal-on-metal articulations: a low-carbon alloy with 0.05%-0.08% carbon concentration, or a high-carbon alloy with 0.20%-0.25% carbon concentration. Read more >
Metasul® Metal-on-Metal Technology Surface
Surface Key Factor: Roughness
The roughness of a metal-on-metal articulation and material processing are the key surface factors controlling its wear behavior. According to Chan et al.1 and Jin et al.2, the roughness of the components must be as low as possible in order to improve lubrication and help minimize the amount of wear. Read more >
Metasul® Metal-on-Metal Technology Design
Design Key Factor: Where Technology and Experience Meet
For two decades the majority of total hips have utilized a modular insert. Modularity offers more intraoperative choices during primary and revision surgery, including a variety of bearing materials, articulation diameters and insert options. Read more >
Metasul® Metal-on-Metal Technology Geometric
Geometric Key Factor: Clearance
The diametrical clearance of a metal-on-metal articulation is the geometric key factor controlling its wear behavior. The diametrical clearance is the difference in articulation diameter between the acetabular cup and femoral head. Read more >
Tribology of Metal-on-Metal Articulations Wear Performance
Hardness Influences Wear Performance
Optimized clearance and low surface roughness can result in good fluid film lubrication of metal-on-metal bearings as long as some relative motion occurs in the articulation, e.g. during normal gait. Read more >
Tribology of Metal-on-Metal Articulations Friction
Frictional torque was a problem in first-generation metal-on-metal implants due to limitations in manufacturing and a poor understanding of bearing design and function. However, with modern manufacturing techniques, proper diametrical clearances and low surface roughness, today’s metal-on-metal components minimize frictional torque and demonstrate improved lubrication. Read more >
Metasul® Metal-on-Metal Technology Precision
The challenge in manufacturing Metasul components is to achieve exact precision with regard to diameter, sphericity and roughness. The quality of the components during manufacture remains consistent by validated processes and thorough inspections. Surface roughness and sphericity have been identified as variables that can influence the wear performance of metal-on-metal components. Read more >
Tribology of Metal-on-Metal Articulations Lubrication
Lubrication controls the amount of wear in metal-on-metal articulations. Studies of lubrication behavior suggest that strict control over manufacturing processes and component design can produce conditions favorable for fluid film lubrication, especially for large-diameter metal-on-metal bearings. Read more >
Trabecular Metal™ Acetabular Augment and Restrictor
Addresses Bone Deficiencies
- The Augment and Restrictor fill bone deficiencies as an alternative to preparing and using structural allografts.
- Host bone is conserved while the implant size, position, and orientation are determined by the defect.