Early outcomes of a novel bicruciate-retaining knee system: a 2-year minimum retrospective cohort study
- 18.01.2022
- Knee Arthroplasty
Erschienen in:
- Verfasst von
- Vivek Singh
- David Yeroushalmi
- Thomas H. Christensen
- Thomas Bieganowski
- Alex Tang
- Ran Schwarzkopf
- Erschienen in
- Archives of Orthopaedic and Trauma Surgery | Ausgabe 1/2023
Abstract
Introduction
Bicruciate retaining (BCR) total knee arthroplasty (TKA) was designed to simulate natural knee kinematics and improve proprioception by retaining both the ACL and PCL. While the prospect of the design appears favorable to patients, previous designs have demonstrated modest survivorship rates compared to traditional designs. This study aims to report the early functional outcomes and implant survivorship of a novel BCR design.
Materials and methods
A multi-center, retrospective study was conducted identifying BCR TKA patients from 2016 to 2017. Patient demographics, quality outcomes, and post-operative complications were collected. A Kaplan–Meier analysis was used to evaluate revision-free survival.
Results
One-hundred thirty-three patients with a mean follow-up time of 2.35 ± 0.25 years (range: 2.00–2.87 years) were identified. Patients receiving BCR TKA were, on average, 61.46 ± 9.27 years-old, obese (BMI = 31.80 ± 6.01 kg/m2), predominantly white (71.4%), and female (69.9%). The device was most often implanted using standard instruments (85.7%) compared to computer-assisted navigation (13.5%). Average length-of-stay was 1.77 ± 0.97 days. Six patients had a reoperation; three (2.5%) full revisions occurred for: infection (n = 1), arthrofibrosis (n = 1), and ACL rupture (n = 1); one (0.8%) tibial revision occurred for: arthrofibrosis; two (1.5%) liner exchanges occurred for: infection (n = 1) and arthrofibrosis (n = 1). Kaplan–Meier survivorship analysis of cumulative failure at 2-year showed a survival rate of 96.2% (95% confidence interval, 91.2–98.4%) for all-cause reoperation, 97.3% (91.6–99.1%) for aseptic revision, and 100% for mechanical failure.
Conclusion
Survivorship was 96.2% for all-cause reoperation, 97.3% for aseptic revision, and 100% for mechanical implant failure at 2-years. This novel BCR TKA demonstrated no implant-related complications and excellent survivorship outcomes over 2 years with comparable revision rates to those previously reported in the literature.
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- Titel
- Early outcomes of a novel bicruciate-retaining knee system: a 2-year minimum retrospective cohort study
- Verfasst von
-
Vivek Singh
David Yeroushalmi
Thomas H. Christensen
Thomas Bieganowski
Alex Tang
Ran Schwarzkopf
- Publikationsdatum
- 18.01.2022
- Verlag
- Springer Berlin Heidelberg
- Erschienen in
-
Archives of Orthopaedic and Trauma Surgery / Ausgabe 1/2023
Print ISSN: 0936-8051
Elektronische ISSN: 1434-3916 - DOI
- https://doi.org/10.1007/s00402-022-04351-2
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