Abstract
Background
It is currently unknown if simultaneous bilateral total knee arthroplasty (si-BTKA)
can also be safely performed in the outpatient setting. The primary aim of this study
was to compare 30-day postoperative complication rates between outpatient and inpatient
si-BTKA.
Methods
Adults undergoing simultaneous bilateral total knee arthroplasty (si-BTKA) from 2015-2019
were queried using the American College of Surgeons National Surgical Quality Improvement
Program (NSQIP) database. Our primary analysis compared the rates of complications
between outpatient si-BTKA and inpatient si-BTKA using bivariate comparisons and multivariable
logistic regression of outpatient and inpatient cases controlling for differences
in baseline demographics and comorbidities.
Results
From 2015 to 2019, the utilization of outpatient si-BTKA increased from 0.6% to 10.5%.
Outpatient si-BTKA were found to have significantly lower odds of any complication
(OR = 0.49), minor complication (OR = 0.50), and postoperative transfusion (OR = 0.66)
compared to inpatient cases. Outpatient si-BTKA also had a significantly shorter operative
time.
Conclusion
Compared to inpatient si-BTKA, patients who undergo outpatient si-BTKA do not demonstrate
increased rates of any complication, severe complications, and minor complications
within 30-days postoperatively. Further insight is needed on the effect of outpatient
si-BTKA on long-term outcomes.
Keywords
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Article info
Publication history
Published online: January 10, 2022
Accepted:
January 4,
2022
Received in revised form:
December 20,
2021
Received:
August 30,
2021
Footnotes
One or more of the authors of this paper have disclosed potential or pertinent conflicts of interest, which may include receipt of payment, either direct or indirect, institutional support, or association with an entity in the biomedical field which may be perceived to have potential conflict of interest with this work. For full disclosure statements refer to https://doi.org/10.1016/j.arth.2022.01.012.
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