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Scientific Articles   |    
Challenges in Prosthesis Classification
Otto Robertsson, MD, PhD1; Stan Mendenhall, MA, MS2; Elizabeth W. Paxton, MA3; Maria C.S. Inacio, MS3; Stephen Graves, MB, BS, PhD4
1 The Swedish Knee Arthroplasty Register, Department of Orthopaedics and Clinical Sciences, Lund University Hospital, SE 221 85, Lund, Sweden. E-mail address: otto.robertsson@med.lu.se
2 Orthopedic Network News, 1500 Cedar Bend Drive, Ann Arbor, MI 48105
3 Surgical Outcomes & Analysis Unit of Clinical Analysis, Kaiser Permanente, 3033 Bunker Hill Street, San Diego, CA 92109
4 AOA National Joint Replacement Registry, Discipline of Public Health, University of Adelaide, MDP DX650 511, South Australia, Australia 5005
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Disclosure: One or more of the authors received payments or services, either directly or indirectly (i.e., via his or her institution), from a third party in support of an aspect of this work. In addition, one or more of the authors, or his or her institution, has had a financial relationship, in the thirty-six months prior to submission of this work, with an entity in the biomedical arena that could be perceived to influence or have the potential to influence what is written in this work. No author has had any other relationships, or has engaged in any other activities, that could be perceived to influence or have the potential to influence what is written in this work. The complete Disclosures of Potential Conflicts of Interest submitted by authors are always provided with the online version of the article.

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Copyright © 2011 by The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2011 Dec 21;93(Supplement 3):72-75. doi: 10.2106/JBJS.K.00990
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Abstract

Abstract: 

Accurate prosthesis classification is critical for total joint arthroplasty surveillance and assessment of comparative effectiveness. Historically, prosthesis classification was based solely on the names of the prosthesis manufacturers. As a result, prosthesis designs changed without corresponding name changes, and other prostheses’ names changed over time without substantial design modifications. As the number of prostheses used in total joint arthroplasty on the market increased, catalog and lot numbers associated with prosthesis descriptions were introduced by manufacturers. Currently, these catalog and lot numbers are not standardized, and there is no consensus on categorization of these numbers into brands or subbrands. Classification of the attributes of a prosthesis also varies, limiting comparisons of prostheses across studies and reports. The development of a universal prosthesis classification system would standardize prosthesis classification and enhance total joint arthroplasty research collaboration worldwide. This is a current area of focus for the International Consortium of Orthopaedic Registries (ICOR).

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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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