Severe heterotopic ossification and stiffness after revision knee surgery for a periprosthetic fracture  Maher Baroudi, MD, Pascale Derome, MD, Michel.

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Severe heterotopic ossification and stiffness after revision knee surgery for a periprosthetic fracture  Maher Baroudi, MD, Pascale Derome, MD, Michel Malo, MD, FRCS(c)  Arthroplasty Today  Volume 3, Issue 3, Pages 147-150 (September 2017) DOI: 10.1016/j.artd.2016.11.001 Copyright © 2016 The Authors Terms and Conditions

Figure 1 Preoperative radiographs (anteroposterior (AP) (a), lateral (b), and Merchant (c) views) showing extensive heterotopic ossification of the left total knee arthroplasty. Arthroplasty Today 2017 3, 147-150DOI: (10.1016/j.artd.2016.11.001) Copyright © 2016 The Authors Terms and Conditions

Figure 2 Intraoperative images showing (a) distal femoral bone deficit and poor bone quality after implant removal, (b) posterior heterotopic ossification (arrow) after distal femoral resection, and (c) prosthesis implantation with a segmental distal femoral replacement and rotating-hinge knee system tibial platform with circumferential metallic augment. Arthroplasty Today 2017 3, 147-150DOI: (10.1016/j.artd.2016.11.001) Copyright © 2016 The Authors Terms and Conditions

Figure 3 Postoperative radiographs (a) standing AP, (b) lateral, and (c) Merchant views of the left knee at 1-year postoperatively. Arthroplasty Today 2017 3, 147-150DOI: (10.1016/j.artd.2016.11.001) Copyright © 2016 The Authors Terms and Conditions