Volume 5, Issue 1, Pages (March 2019)

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Volume 5, Issue 1, Pages 52-56 (March 2019) Fracture of the neck of an uncemented femoral component unrelated to trunnion corrosion Jonathan R. Peterson, MD, Timothy M. Wright, PhD, Samuel S. Wellman, MD, Paul F. Lachiewicz, MD Arthroplasty Today Volume 5, Issue 1, Pages 52-56 (March 2019) DOI: 10.1016/j.artd.2019.01.006 Copyright © 2019 The Authors Terms and Conditions

Figure 1 Anteroposterior (a) and lateral (b) radiographs of the left hip before head and liner exchange. Radiographs demonstrate polyethylene wear and osteolysis in the greater trochanter. Arthroplasty Today 2019 5, 52-56DOI: (10.1016/j.artd.2019.01.006) Copyright © 2019 The Authors Terms and Conditions

Figure 2 Anteroposterior (a) and oblique lateral (b) radiographs of the left hip on the day of injury, with fracture through the neck of the femoral component. Arthroplasty Today 2019 5, 52-56DOI: (10.1016/j.artd.2019.01.006) Copyright © 2019 The Authors Terms and Conditions

Figure 3 Anteroposterior (a) and lateral (b) radiographs of the left hip at 3 months postoperatively. Radiographs demonstrate healing of the osteotomy site and stable positioning of the components. Arthroplasty Today 2019 5, 52-56DOI: (10.1016/j.artd.2019.01.006) Copyright © 2019 The Authors Terms and Conditions

Figure 4 Macroscopic photograph (a) of the fractured implant demonstrating typical fracture between the grains of the Co-Cr casting that resembles a series of up and down pyramids. Electron microscopy image (b) demonstrating additional intergranular cracks besides the one that formed the main fracture (arrow heads). Co-Cr, cobalt-chromium. Arthroplasty Today 2019 5, 52-56DOI: (10.1016/j.artd.2019.01.006) Copyright © 2019 The Authors Terms and Conditions