This 1992 narrative review by Amstutz et al. examines the cellular and mechanical mechanisms by which particulate wear debris from joint replacement components drives periprosthetic osteolysis, arguing that macrophage activation — not fixation failure alone — is the universal and often primary cause of late implant loosening across all implant designs and fixation modes.
Understanding this mechanism helps explain why even well-fixed implants can fail over time and why bearing surface selection matters for implant longevity.
This knowledge directly informs patient counseling about the biological limits of joint replacements and the rationale behind newer bearing technologies.
This 1992 narrative review by Amstutz et al. examines the cellular and mechanical mechanisms by which particulate wear debris from joint replacement components drives periprosthetic osteolysis, arguing that macrophage activation — not fixation failure alone — is the universal and often primary cause of late implant loosening across all implant designs and fixation modes.
Understanding this mechanism helps explain why even well-fixed implants can fail over time and why bearing surface selection matters for implant longevity.
This knowledge directly informs patient counseling about the biological limits of joint replacements and the rationale behind newer bearing technologies.