Abstract
Background
With recent advances in partial knee arthroplasty, there is conflicting data regarding
the outcomes and revision rates for bicompartmental knee arthroplasty (BKA) and unicompartamental
knee arthroplasty (UKA) compared to total knee arthroplasty (TKA). This study uses
national data to compare surgical and medical complications of UKA, BKA, and TKA to
aid surgical decision-making.
Methods
A retrospective cohort analysis was done using the Mariner dataset of the PearlDiver
patient records database from 2010-2019. Current Procedural Terminology (CPT) codes
were used to identify patients who underwent UKA, BKA, and TKA for a primary indication
of osteoarthritis (OA). Univariate and multivariable analyses were performed to determine
1-year and 2-year revision, prosthetic joint infection (PJI), and loosening, 1-year
manipulation under anesthesia (MUA), and 90-day postoperative medical complications.
Results
The BKA cohort was found to have higher odds of one and two-year revision compared
to UKA and TKA cohorts. Additionally, the UKA cohort had higher odds of one and two-year
revision but lower odds of 1-year MUA than the TKA cohort. However, both the BKA and
UKA cohorts had lower odds of any 90-day postoperative complications when compared
to the TKA cohort.
Conclusions
Even with modern implants and approaches, our study found that revision rates are
highest for BKA followed by UKA and TKA at two years postoperatively. Notably, medical
complications were much less common after all partial knee replacement types when
compared to TKA. These findings may be used to guide patients in selecting the appropriate
surgery to meet their goals and expectations.
Keywords
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Article info
Publication history
Published online: November 24, 2022
Accepted:
November 12,
2022
Received in revised form:
November 11,
2022
Received:
May 17,
2022
Identification
Copyright
© 2022 Elsevier B.V. All rights reserved.
