Tibial tray fracture in a modern prosthesis with retrieval analysis

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Presentation transcript:

Tibial tray fracture in a modern prosthesis with retrieval analysis John J. Callaghan, MD, David E. DeMik, MD, PharmD, Nicholas A. Bedard, MD, Andrew N. Odland, MD, William M. Kane, PhD, Steven M. Kurtz, PhD Arthroplasty Today Volume 4, Issue 2, Pages 143-147 (June 2018) DOI: 10.1016/j.artd.2017.12.005 Copyright © 2017 Terms and Conditions

Figure 1 (a) Anteroposterior (AP) long leg preoperative radiographs from February 2009 (b) AP right knee at 6 weeks postoperative (c) AP bilateral knees at 1 year postoperative (d) AP and lateral radiographs first demonstrating tibial tray fracture in July 2010 (e) AP long leg radiographs 1 month after revision procedure (f) AP bilateral knees at 5 years after revision procedure. Arthroplasty Today 2018 4, 143-147DOI: (10.1016/j.artd.2017.12.005) Copyright © 2017 Terms and Conditions

Figure 1 (a) Anteroposterior (AP) long leg preoperative radiographs from February 2009 (b) AP right knee at 6 weeks postoperative (c) AP bilateral knees at 1 year postoperative (d) AP and lateral radiographs first demonstrating tibial tray fracture in July 2010 (e) AP long leg radiographs 1 month after revision procedure (f) AP bilateral knees at 5 years after revision procedure. Arthroplasty Today 2018 4, 143-147DOI: (10.1016/j.artd.2017.12.005) Copyright © 2017 Terms and Conditions

Figure 2 Fractured tibial tray. Arthroplasty Today 2018 4, 143-147DOI: (10.1016/j.artd.2017.12.005) Copyright © 2017 Terms and Conditions

Figure 3 Schematic of tibial tray. The 2 fracture segments likely emanated from the anterior and posterior edges of the tray and grew in the directions indicated by the arrows. The approximate position of the post and flange support beneath the tray is indicated (not to scale). Arthroplasty Today 2018 4, 143-147DOI: (10.1016/j.artd.2017.12.005) Copyright © 2017 Terms and Conditions

Figure 4 SEM micrograph of the tray fracture surface. Beach marks are indicated by the white arrows. Some areas of rubbing are also noted where the surface looks smooth. SEM, scanning electron microscopy. Arthroplasty Today 2018 4, 143-147DOI: (10.1016/j.artd.2017.12.005) Copyright © 2017 Terms and Conditions

Figure 5 SEM micrograph of another region of the fracture surface. Inset shows fatigue striations (white arrow) at high magnification. SEM, scanning electron microscopy. Arthroplasty Today 2018 4, 143-147DOI: (10.1016/j.artd.2017.12.005) Copyright © 2017 Terms and Conditions