Angerame MR, Eschen CL, Johnson RM, et al. - This study was sought to correlate clinical results of high-flexion total knee arthroplasty (HF-TKA) vs conventional TKA (C-TKA) from the same implant system with long-term follow-up. Researchers conducted this review of prostheses between 2004 and 2007 matched 145 of 179 possible HF-TKAs with 145 of 1,347 possible C-TKAs (mean follow-up was 121.5 ± 20.3 months). The primary endpoint included failure requiring revision. Range of motion (ROM), Knee Society Scores (KSS), and radiolucent lines were considered as secondary endpoints. An increased incidence of failure requiring revision with the HF-TKA was observed in the matched and unmatched analyses. They found higher incidences of radiolucent lines with HF-TKA. According to the findings, with no observed variations in ROM or KSS and a higher rate of failure with HF-TKA, there seems to be no advantage for use of the HF-TKA.