Volume 4, Issue 3, Pages (September 2018)

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Volume 4, Issue 3, Pages 275-278 (September 2018) Catastrophic failure of a dual mobility bearing in a revision total hip arthroplasty Brett G. Brazier, BA, Ethan R. Wren, DO, Michael J. Blackmer, DO, Dominic V. Marino, DO, Jason M. Cochran, DO Arthroplasty Today Volume 4, Issue 3, Pages 275-278 (September 2018) DOI: 10.1016/j.artd.2018.03.004 Copyright © 2018 Terms and Conditions

Figure 1 Anteroposterior (AP) pelvis radiograph (a) demonstrating an approximate abduction angle of 72°. Cross-table lateral radiograph of the left hip (b) demonstrating approximately 35° of anteversion. Arthroplasty Today 2018 4, 275-278DOI: (10.1016/j.artd.2018.03.004) Copyright © 2018 Terms and Conditions

Figure 2 AP pelvis radiograph (a) completed 4 weeks after revision surgery. Cross-table lateral radiograph of the left hip (b) completed 4 weeks after revision surgery demonstrating acceptable position of components. Arthroplasty Today 2018 4, 275-278DOI: (10.1016/j.artd.2018.03.004) Copyright © 2018 Terms and Conditions

Figure 3 AP pelvis radiograph demonstrating left revision THA failure secondary to eccentric femoral head placement. Arthroplasty Today 2018 4, 275-278DOI: (10.1016/j.artd.2018.03.004) Copyright © 2018 Terms and Conditions

Figure 4 AP radiograph of the left hip demonstrating superior dislocation of revision THA. Arthroplasty Today 2018 4, 275-278DOI: (10.1016/j.artd.2018.03.004) Copyright © 2018 Terms and Conditions

Figure 5 Evidence of pseudotumor formation secondary to polyethylene wear. Arthroplasty Today 2018 4, 275-278DOI: (10.1016/j.artd.2018.03.004) Copyright © 2018 Terms and Conditions

Figure 6 (a) Evidence of wear to the ceramic head and damage to the polished surface of the acetabular shell. (b) Evidence of catastrophic polyethylene wear and plastic deformation secondary to edge loading of the polyethylene against the acetabular shell. Arthroplasty Today 2018 4, 275-278DOI: (10.1016/j.artd.2018.03.004) Copyright © 2018 Terms and Conditions

Figure 7 AP pelvis status after second revision surgery demonstrating acceptable position of components. Arthroplasty Today 2018 4, 275-278DOI: (10.1016/j.artd.2018.03.004) Copyright © 2018 Terms and Conditions