ISSN 2472-016X

Journal of Orthopedic Oncology
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  • Case Report   
  • J Orthop Oncol,
  • DOI: 10.4172/2472-016X.1000131

Intraprosthetic Polyethylene Liner Dislocation of a Dual Mobility Mega-Prosthesis in an Osteosarcoma Patient: A Case Report and Literature Review

David Slawaska-Eng, Motaz AlAqeel, Humaid Al Farii*, Cyril Boulila, Abdulrahman AlAseem and Robert Turcotte
Division of Orthopaedic Surgery, McGill University, 1650 Cedar Avenue, Montreal, QC H3G 1A4, Canada
*Corresponding Author : Motaz AlAqeel, Humaid Al Farii, Division of Orthopaedic Surgery, McGill University, 1650 Cedar Avenue, Montreal, QC H3G 1A4, Canada, Tel: +1 (514)-991-4888, Email: Humaid44@gmail.com

Received Date: Feb 17, 2020 / Accepted Date: Mar 02, 2020 / Published Date: Mar 09, 2020

Abstract

Osteosarcomas affecting the pelvic region often require extensive resections, resulting in the loss essential structures, which are required for hip joint stability. Dual mobility (tripolar) cup prostheses were created to address the issue of joint instability and have even become very popular for hip joint reconstruction following hemipelvectomies. Despite their increased stability, dislocations will still inevitably occur and need to be managed. In these cases, a closed reduction must be executed diligently as excessive levering may cause the “bottle opener” effect and dislocation of the polyethylene liner, an event also known as intraprosthetic dislocation. To our knowledge, this is the first reported case of an intraprosthetic dislocation by the “bottle opener” effect following an attempted closed reduction of a dual mobility system in an orthopedic oncology patient. In this case report and brief review of the current literature, we want to create awareness about the possible problems of dual mobility cups in oncology patients and suggest a type of management should these problems arise.

Keywords: Osteosarcomas; Intraprosthetic dislocation

Citation: Slawaska-Eng D, AlAqeel M, Farii HA, Boulila C, AlAseem A, et al. (2020) Intraprosthetic Polyethylene Liner Dislocation of a Dual Mobility Mega-Prosthesis in an Osteosarcoma Patient: A Case Report and Literature Review. J Orthop Oncol 6: 131. Doi: 10.4172/2472-016X.1000131

Copyright: © 2020 Al Farii H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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