This current-concepts review uses worldwide National Joint Registry data to define why total knee arthroplasties fail and which patients are at highest risk. It synthesizes registry and cohort evidence on failure modes, timing of revision, and the patient, surgical, and implant factors that drive revision.
When a TKA fails, the timing tells you the likely cause. A knee that fails within two years is infection until proven otherwise. A knee that loosens years later is aseptic loosening.
This review documents a real shift in failure epidemiology. Polyethylene wear, the old enemy, has largely been engineered out with cross-linked polyethylene, leaving infection, instability, and pain as the modern drivers.
Age is the dominant modifiable conversation. A man under 55 faces a 12% ten-year revision risk versus 2% over age 75, so registry data should anchor your preoperative counseling of young patients.
Technique choices that lower revision are concrete: cement the tibia (uncemented is 1.7x riskier), balance ligaments meticulously, and favor a cemented unconstrained fixed-bearing design (10-year CRR 3%).
Remember that revision underestimates failure. Many dissatisfied patients have pain or stiffness with no objective revision indication, so PROMs matter when you judge whether a knee truly succeeded.
This current-concepts review uses worldwide National Joint Registry data to define why total knee arthroplasties fail and which patients are at highest risk. It synthesizes registry and cohort evidence on failure modes, timing of revision, and the patient, surgical, and implant factors that drive revision.
When a TKA fails, the timing tells you the likely cause. A knee that fails within two years is infection until proven otherwise. A knee that loosens years later is aseptic loosening.
This review documents a real shift in failure epidemiology. Polyethylene wear, the old enemy, has largely been engineered out with cross-linked polyethylene, leaving infection, instability, and pain as the modern drivers.
Age is the dominant modifiable conversation. A man under 55 faces a 12% ten-year revision risk versus 2% over age 75, so registry data should anchor your preoperative counseling of young patients.
Technique choices that lower revision are concrete: cement the tibia (uncemented is 1.7x riskier), balance ligaments meticulously, and favor a cemented unconstrained fixed-bearing design (10-year CRR 3%).
Remember that revision underestimates failure. Many dissatisfied patients have pain or stiffness with no objective revision indication, so PROMs matter when you judge whether a knee truly succeeded.