Volume 3, Issue 4, Pages (December 2017)

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Volume 3, Issue 4, Pages 229-233 (December 2017) Fracture of the femoral adapter bolt and taper adapter in a modern rotating platform knee arthroplasty Elexis C. Baral, BS, Alexander S. McLawhorn, MD, MBA, Timothy M. Wright, PhD, Edwin P. Su, MD Arthroplasty Today Volume 3, Issue 4, Pages 229-233 (December 2017) DOI: 10.1016/j.artd.2017.01.003 Copyright © 2017 The Authors Terms and Conditions

Figure 1 Anteroposterior (AP) (a) and lateral (b) radiographs obtained at revision surgery in 2010. 4.5 years later, the patient presented with onset of pain and AP (c) and lateral (d) views confirmed fracture of the implant and taper disengagement from the metaphyseal stem. Arthroplasty Today 2017 3, 229-233DOI: (10.1016/j.artd.2017.01.003) Copyright © 2017 The Authors Terms and Conditions

Figure 2 (a) Drawing displaying assembly of the femoral component. The red lines indicate location of implant fracture. (b) Intraoperative picture of the fractured segments after removal. Arthroplasty Today 2017 3, 229-233DOI: (10.1016/j.artd.2017.01.003) Copyright © 2017 The Authors Terms and Conditions

Figure 3 Magnified image of the fracture surface of the femoral bolt showing the point of fracture initiation (denoted by the star), beach or clamshell markings indicative of fracture progression posterolaterally across the surface (indicated by the arrows), and the area of final fracture (highlighted within the box at the posterolateral edge). Arthroplasty Today 2017 3, 229-233DOI: (10.1016/j.artd.2017.01.003) Copyright © 2017 The Authors Terms and Conditions