Table 2.
Materials | Advantages | Disadvantages | Applications |
---|---|---|---|
Polymers | Good performance in cyclic load applications, degrade completely over time. | Different cytotoxicity mechanism, inflammatory reactions, bone degradation, show higher corrosion rate. | Bearing surfaces [119] |
Ceramics | Zero risk of transmitting diseases/immunogenicity, compression force resistance, corrosion resistance. | Low mechanical properties, high stress-shielding effects, lower rate of biodegradation, fracture toughness is poor. | Bearing surfaces |
Stainless Steels | Better mechanical strength, high ductility, flexibility in bending, low manufacturing cost. | High stress-shielding effects, low resistance to corrosion, less osseointegration, biocompatibility issue. | Bone plates, pins, nails, screws, threads, steel threads, and sutures |
Co-Cr based alloys | High strength, ductility, elastic modulus, stiffness, and density. | Higher modulus than bones, stress-shielding effects, not ideal for bearing surfaces in a joint, low frictional properties. | Orthopedic implants for knee, ankle, hip, shoulder, and fracture fixation devices |
Titanium and its alloys | Good corrosion resistance, light weight, low density, good mechanical strength. | Poor tribological performance, high frictional coefficient, adhesive wear, and low abrasion resistance. | Total knee, hip replacement, bone plates, and screws for fixation and maxillofacial applications |
Mg and its alloys | Low Young’s modulus, no stress shielding, biodegradable. | Biocompatibility issue, corrosion resistance, low mechanical integrity. | Mesh cage for segmental defects in bone, 3D scaffold design for better bone regeneration |