Data from the Swiss National Arthroplasty Registry SIRIS suggest that unicompartmental knee arthroplasty is associated with a lower risk of periprosthetic joint infection than total knee arthroplasty

Despite limited debridement options, implant-retaining revision for PJI after UKA was as successful as after TKA, and this findings support the hypothesis that smaller implants and less extensive surgery may be associated with lower infection risk.