All-polyethylene TKA components may decrease risk of revision vs. metal-backed components
Click Here to Manage Email Alerts
Key takeaways:
- All-polyethylene knee arthroplasty components were associated with a decreased risk of revision vs. metal components.
- Future research should assess the costs and value of all-polyethylene vs. metal components.
In patients aged 65 years or older, results showed all-polyethylene tibial components for total knee arthroplasty were linked with decreased risks of all-cause revision and revision for infection compared with metal-backed components.
Ryland Kagan, MD, assistant professor of orthopedics and rehabilitation at the Oregon Health and Science University School of Medicine, and colleagues used the American Joint Replacement Registry to analyze outcomes of 479,465 metal-backed TKAs and 5,559 all-polyethylene TKAs performed between 2012 and 2019 in patients aged 65 years or older.
Overall, patients who underwent TKA with an all-polyethylene tibial component had decreased risks for all-cause revision (HR = 0.37) and revision for infection (HR = 0.41) compared with patients who underwent TKA with a metal-backed component.
Kagan and colleagues noted event-free survival curves showed patients who underwent TKA with an all-polyethylene component had a decreased risk for all-cause revision across all timepoints during the 8-year study period compared with patients who underwent TKA with a metal-backed component.
“A decreased associated risk for revision should ease concerns about the use of all-polyethylene components in patients aged 65 years or older, and future investigations should investigate the potential cost and value savings associated with expanded use in this population,” Kagan and colleagues wrote in the study.
Collapse
Read more about
Click Here to Manage Email Alerts