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The clinical outcome of patellofemoral arthroplasty vs total knee arthroplasty in patients under age 55 with isolated patellofemoral osteoarthritis

Journal of Arthroplasty Jul 19, 2019

Kamikovski I, et al. - Via a retrospective case-matched cohort study based on age, sex, body mass index, and side, of 23 patellofemoral arthroplasty (PFA) in 19 subjects operated on by two surgeons and 23 total knee arthroplasty (TKA) in 23 subjects operated on by six surgeons, the researchers intended to compare the clinical outcome of PFA and TKA in subjects who were under age 55 with isolated patellofemoral osteoarthritis (PF OA, refers to all presentations of advanced articular wear that involved the patella facet, trochlear groove, or both). At minimum 2-year follow-up, TKA and PFA could be distinguished on all patient reported outcome measures, but PFA subjects presented statistically significantly greater improvement between 1-year post-op and 2 years following operation. All subjects got better between preoperative and post-operative timepoints. Hence, at 2-year follow-up, PFA and TKA performed equally well, however, TKA performed better respective of functional outcomes at the 1-year mark. In younger individuals with isolated PF OA who want a more conservative, kinematic-preserving approach, PFA persisted to be a practical treatment option resulting to early outcomes that could be compared favorably with TKA.
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