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KMID : 1144520230350010015
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Knee Surgery & Related Research
2023 Volume.35 No. 1 p.15 ~ p.15
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Impact of time to revision total knee arthroplasty on outcomes following aseptic failure
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Mackenzie A. Roof
Shankar Narayanan
Nathan Lorentz
Vinay K. Aggarwal
Morteza Meftah
Ran Schwarzkopf
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Abstract
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Introduction : Prior studies have demonstrated an association between time to revision total knee arthroplasty (rTKA) and indication; however, the impact of early versus late revision on post-operative outcomes has not been reported.
Materials and methods : A retrospective, observational study examined patients who underwent unilateral, aseptic rTKA at an academic orthopedic hospital between 6/2011 and 4/2020 with?>?1-year of follow-up. Patients were early revisions if they were revised within 2 years of primary TKA (pTKA) or late revisions if revised after greater than 2 years. Patient demographics, surgical factors, and post-operative outcomes were compared.
Results : 470 rTKA were included (199 early, 271 late). Early rTKA patients were younger by 2.5 years (p?=?0.002). The predominant indications for early rTKA were instability (28.6%) and arthrofibrosis/stiffness (26.6%), and the predominant indications for late rTKA were aseptic loosening (45.8%) and instability (26.2%; p?
Conclusions : Aseptic rTKA performed before 2 years had different indications but demonstrated similar outcomes to those performed later. Early revisions had shorter surgical times, which could be attributed to differences in rTKA indication.
Level of evidence : III, retrospective observational analysis.
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KEYWORD
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Revision total knee arthroplasty, Timing, Indications, Outcomes
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