Polymer Biomaterials Offer Possibilities for Orthopedic Implants

Since the 1950s and John Charnley’s introduction of the low friction hip prosthesis, metal-on-polyethylene bearings have remained the gold standard in terms of the long-term performance of orthopedic implants, and have represented the largest share of the orthopedic implant market. In spite of decades of use and large amounts of research and development on these materials, some problems still exist with this material combination. Prime among these are wear-related osteolysis and thick implants leading to healthy bone removal during surgery. The use of a high-performance polymer material may present an opportunity to create a step change in this sector.