Journal article
Cemented Rotating-Platform Total Knee Replacement: A Concise Follow-up, at a Minimum of Twenty Years, of a Previous Report
Journal of bone and joint surgery. American volume, Vol.92A(7), pp.1635-1639
07/07/2010
DOI: 10.2106/JBJS.I.01012
PMID: 20595570
Abstract
We previously evaluated 119 consecutive total knee arthroplasties performed by a single surgeon in eighty-six patients with use of the cemented LCS (low contact stress) mobile-bearing, rotating-platform system and an all-polyethylene patellar component. The average age of the patients at the time of surgery was seventy years. The patients were contacted as part of their routine follow-up and were asked to participate in this study. The purpose of the present study was to report the updated results at a minimum follow-up of twenty years.
Twenty patients (twenty-six knees) were living, and one was lost to follow-up. Three knees required a reoperation (two for periprosthetic fractures and one for infection). No component was revised as a part of the reoperations. No knee required revision since the fifteen-year follow-up evaluation. Osteolysis was present in six knees compared with only three knees at the time of the fifteen-year follow-up. One knee had radiographic signs of femoral component loosening, which was associated with osteolysis. It occurred after the fifteen-year follow-up study. 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 points, respectively, at the preoperative evaluation and 89 and 67 points 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 twenty years. However, the prevalence of osteolysis continues to increase with a longer duration of follow-up in these patients.
Details
- Title: Subtitle
- Cemented Rotating-Platform Total Knee Replacement: A Concise Follow-up, at a Minimum of Twenty Years, of a Previous Report
- Creators
- John J Callaghan - University of IowaChristopher W Wells - University of IowaSteve S Liu - University of IowaDevon D Goetz - Iowa Orthopaedic CenterRichard C Johnston - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of bone and joint surgery. American volume, Vol.92A(7), pp.1635-1639
- Publisher
- Journal of Bone and Joint Surgery Incorporated
- DOI
- 10.2106/JBJS.I.01012
- PMID
- 20595570
- ISSN
- 0021-9355
- eISSN
- 1535-1386
- Language
- English
- Date published
- 07/07/2010
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation
- Record Identifier
- 9984622055902771
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