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Cemented Rotating-Platform Total Knee ReplacementA Concise Follow-up, at a Minimum of Fifteen Years, of a Previous Report*
John J. Callaghan, MD1; Michael R. O'Rourke, MD1; Michael F. Iossi, BS1; Steve S. Liu, MD1; Devon D. Goetz, MD2; David A. Vittetoe, MD2; Patrick M. Sullivan, MD2; Richard C. Johnston, MD1
1 Department of Orthopaedics and Rehabilitation, University of Iowa College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242. E-mail address for J.J. Callaghan: john-callaghan@uiowa.edu
2 Des Moines Orthopaedics, 6001 Westown Parkway, West Des Moines, IA 50266-7702
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In support of their research or preparation of this manuscript, one or more of the authors received grants or outside funding from DePuy. In addition, one or more of the authors received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity (DePuy). Also, a commercial entity (DePuy) paid or directed, or agreed to pay or direct, benefits to a research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.
Original Publication Callaghan JJ, Squire MW, Goetz DD, Sullivan PM, Johnston RC. Cemented rotating-platform total knee replacement: a nine to twelve-year follow-up study. J Bone Joint Surg Am. 2000;82:705-11.
Investigation performed at the Iowa Methodist Hospital, Des Moines, and the University of Iowa College of Medicine, Iowa City, Iowa

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2005 Sep 01;87(9):1995-1998. doi: 10.2106/JBJS.D.03039
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Abstract: We previously evaluated 119 consecutive total knee arthroplasties that were performed in eighty-six patients with use of the cemented LCS (low contact stress) rotating-platform system with an all-polyethylene patellar component. The average age of the patients at the time of surgery was seventy years (range, thirty-seven to eighty-eight years). The purpose of this study was to report the updated results at a minimum follow-up of fifteen years.

Thirty-seven patients (fifty-three knees) were living, and no patient was lost to follow-up. No knee was revised because of loosening, osteolysis, or wear. Three knees required a reoperation (two for periprosthetic fractures and one for infection). No component was revised as a part of the reoperations. Osteolysis was present in three knees. No knee had radiographic signs of component loosening, and there were no dislocated bearings. The average range of motion was from 1° of extension to 105° of flexion. The average clinical and functional Knee Society scores were 43 and 49, respectively, at the preoperative evaluation and 85 and 58 at the time of the final follow-up. We concluded that the cemented LCS rotating-platform knee performed well, with durable clinical and radiographic results at a minimum follow-up of fifteen years.

Level of Evidence: Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence.

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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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