Retrospective Study
Copyright ©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Orthop. Oct 18, 2020; 11(10): 431-441
Published online Oct 18, 2020. doi: 10.5312/wjo.v11.i10.431
Early clinical outcome and learning curve following unilateral primary total knee arthroplasty after introduction of a novel total knee arthroplasty system
Adam Omari, Anders Troelsen, Henrik Husted, Christian Skovgaard Nielsen, Kirill Gromov
Adam Omari, Department of Orthopedic Surgery, Copenhagen University Hvidovre Hospital, Copenhagen 2650, Denmark
Anders Troelsen, Henrik Husted, Christian Skovgaard Nielsen, Kirill Gromov, Department of Orthopedic Surgery, Copenhagen University Hospital Hvidovre, Copenhagen 2650, Denmark
Author contributions: Omari A and Gromov K contributed equally to this work; Gromov K, Husted H and Troelsen A designed the research study; Omari A and Gromov K performed the research and data analysis; all authors contributed to writing the final manuscript; All authors have read and approve the final manuscript.
Institutional review board statement: Permission to store and review patient data was obtained from the Danish Data Protection Agency Jr, No. 2007-58-0015; No approval from the National Ethics Committee was necessary as this was a non-interventional observational study.
Informed consent statement: Patients were not required to give informed consent for this study as the analysis used anonymous data that were obtained after each patient agreed to treatment by written consent. Please find a signed document by all authors in our original submission.
Conflict-of-interest statement: Adam Omari, Christian Skovgaard Nielsen and Kirill Gromov have nothing to disclose; Anders Troelsen reports personal fees from Zimmer Biomet as a consultant and speaker, grants from Zimmer Biomet outside the submitted work, and has been a member of the board at the European Knee Society (EKS) since 2015; Henrik Husted reports personal fees from Zimmer Biomet as a speaker, and has been a board member of rapid recovery for Zimmer Biomet.
Data sharing statement: No additional data are available.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Adam Omari, MBBS, Academic Research, Department of Orthopedic Surgery, Copenhagen University Hvidovre Hospital, Kettegårds Alle 30, 2650 Hvidovre, Copenhagen 2650, Denmark. adam.omari.01@regionh.dk
Received: April 17, 2020
Peer-review started: April 18, 2020
First decision: August 9, 2020
Revised: August 18, 2020
Accepted: September 10, 2020
Article in press: September 10, 2020
Published online: October 18, 2020
Processing time: 184 Days and 3.2 Hours
Core Tip

Core Tip: Limited information exists in the literature on how the introduction of a novel total joint arthroplasty (TKA) system translates to improvements in early surgical outcome and component alignment in first adopters. The introduction of a novel TKA implant increased surgical time and intraoperative blood loss immediately after its introduction, but diminished one year after introduction of the implant. As only minor improvements with respect to optimal TKA alignment were observed following its introduction, surgeons should take increased care when introducing new procedures and consider logistics when selecting novel implants, as small gains in alignment should be balanced against inferior peri-operative outcomes.