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Sicat, MSc has no financial interests to disclose. Dr. James C. Chow, MD has the following financial interests to disclose: (a) Axolotl Biologix: Stock or stock Options. (b) Microport Orthopedics: Paid consultant; Paid presenter or speaker. (c) Microport Orthopedics, Inc.: IP royalties; Research support. (d) Orthosensor, Inc.: Paid consultant; Paid presenter or speaker; Research support. (e) Pfizer: Stock or stock Options. (f) Smith & Nephew: IP royalties; Paid consultant; Paid presenter or speaker; Research support. (g) Stryker: Stock or stock Options. (h) Vomaris Innovations: Research support. (i) Vomaris Innovations, Inc.: Paid consultant; Stock or stock Options. Dr. Bertrand Kaper, MD has received research support from Smith & Nephew and is a paid consultant for Smith & Nephew. Riddhit Mitra, MSc receives a salary from Smith & Nephew where he is Director of Product Management, Robotics. Dr. Jing Xie, PhD receives a salary from Smith & Nephew where she is Senior Vice President of Cliincal & Medical Affairs. She has stocks in Smith & Nephew, Medtronic, and Zimmer. Dr. Ran Schwarzkopf, MD MSc has the following financial interests to disclose: (a) Gauss surgical: Stock or stock Options. (b) Intellijoint: Paid consultant; Stock or stock Options. (c) PSI: Stock or stock Options. (d) Smith & Nephew: IP royalties; Paid consultant; Research support. Non-financial interests: Chelsea S. Sicat, MSc, Dr. Bertrand Kaper, MD, Riddhit Mitra, MSc, and Dr. Jing Xie, PhD have no non-financial interests to disclose. Dr. James C. Chow, MD serves as a board\/committee member for Chow Research Foundation. Dr. Ran Schwarzkopf, MD MSc serves as a board\/committee member for the American Academy of Orthopedic Surgeons (AAOS) and American Association of Hip and Knee Surgeons (AAHKS); he is also on the editorial board for Arthroplasty Today and Journal of Arthroplasty.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"Ethical approval was waived in light of the retrospective nature of the study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent was not required for this study as only images without identifying data were used.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}