Recently published data showed hybrid total knee arthroplasty demonstrated positive fixation with minimal revision at long-term follow-up.
Researchers reviewed 148 hybrid total knee arthroplasties (TKAs) in 128 patients performed between 1993 and 1995. Follow-up was conducted at a mean of 14 years. Knee Society score was the primary metric evaluated, and radiographs were analyzed for radiolucencies, osteolysis and loosening. The Kaplan-Meier method was utilized to construct patient survivorship curves.
Survivorship at the end point for aseptic loosening-related revision was 99% at mean follow-up for both femoral and tibial components. Overall, five knees underwent both tibial and femoral revision.
Causes of these revisions included sepsis in two patients and aseptic loosening, fracture and instability in one patient each, according to the researchers. There were three knees that presented with mild focal femoral osteolysis and two with minor tibial osteolysis.
Disclosure: McLaughlin is a paid consultant for, receives support for travel from and engages in review activities for Biomet.