Oosthuizen, Christiaan Rudolf http://orcid.org/0000-0001-9973-5290
Van Der Straeten, Catherine
Maposa, Innocent
Snyckers, Christian Hugo
Vermaak, Duwayne Peter
Magobotha, Sebastian
Article History
Received: 24 July 2019
Accepted: 3 September 2019
First Online: 12 September 2019
Compliance with ethical standards
:
: All authors declare that they received no research grants from funding agencies for this research.Author 1 is an ad hoc paid consultant for Zimmer Biomet and Amplitude. Author 2 has received a speaker honorarium for a presentation on general aspects of Research and Innovation from Smith & Nephew.No other interests required declaration as no benefits in any form have been received from a commercial party related directly or indirectly to the subject of this article.
: Ethical approval was obtained from the Human Research Ethics Committee at the University of the Witwatersrand (WITS) to study the data and X-rays of the individual orthopaedic practices with Clearance Certificate Nos. M1704111 and M1704112. All procedures performed in studies involving human participants were in accordance with the ethical standards of the above named institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: The appendix containing the synopsis of KOGS and the KOGS flowchart with radiographs was published as an open access article under the Creative Commons Attribution License CC BY-NC-ND. [Oosthuizen CR, Takahashi T, Rogan M, et al. (2019) The Knee Osteoarthritis Grading System for Arthroplasty. J Arthroplasty 34:450–455. ExternalRef removed], which permits unrestricted use, distribution and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source.