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. 2019 Aug 2;4(8):503–512. doi: 10.1302/2058-5241.4.180094

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© 2019 The author(s)

This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (CC BY-NC 4.0) licence (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed.

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Fig. 2 — Examples of femoral components with their respective patellar implants.

Top row, from left to right: AGC® (dome-shaped patella), Biomet, Warsaw, USA; Buechel-Pappas (uncemented anatomical rotating platform patella), Endotec, Orlando, USA; LCS® (anatomical fixed bearing patella), DePuy, Warsaw, USA; Medial rotating knee® (cylindrical patella), Finsbury, England.

Bottom row, from left to right: Journey® (offset dome patella), Smith and Nephew, Andover, USA; PFC-Sigma® (modified dome patella), DePuy; Triathlon® (offset dome patella), Stryker, Kalamazoo, USA; Bio-Pro® Townley Total Knee Original (uncemented metal-backed dome patella), Biopro®, Port Huron, USA.

Reproduced with permission from Schindler OS. The controversy of patellar resurfacing in total knee arthroplasty: Ibisne in medio tutissimus? Knee Surg Sports Traumatol Arthrosc 2012;20:1227–1244.