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Article History

Received: 3 June 2020

Accepted: 23 June 2020

First Online: 30 August 2020

Ethics approval and consent to participate

: Ethics for the retrospective review was obtained from the Sydney Local Health District Research Ethics and Governance office of Royal Prince Alfred Hospital (Reference: X18–0178).

: Not applicable.

: The authors have no direct conflicts of interest to declare. Dr. Brett Fritsch is a shareholder in Trium and 360 knee systems, has received institutional support from anthrax, Global Orthopaedics, Smith & Nephew, Surgical Specialties, Zimmer and Friends of the Mater. Dr. Fritsch has given paid presentations and done consulting work for Arthrex, omni and Global Orthopaedics.