Biocompatibility, Durability, and Stability Assessment of an Unconstrained Metacarpophalangeal Joint Prosthesis With Zirconia (ZrO2) Crowns at Metacarpal and Polyether-Ether-Ketone at Proximal Phalanx

This study demonstrates the potential of a zirconia-PEEK prosthesis for MCP joint replacement, potentially improving long-term functional outcomes for patients with advanced rheumatoid arthritis. Its superior biocompatibility and reduced wear characteristics may reduce complications, such as implant failure and the need for revision surgery, ultimately enhancing patient quality of life.