Volume 102, Issue 8 pp. 1835-1846
Original Research Report

Low-frequency sonication may alter surface topography of endoprosthetic components and damage articular cartilage without eradicating biofilms completely

Gurpal Singh

Gurpal Singh

Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany

University Orthopaedics, Hand and Reconstructive Microsurgery Cluster, National University Health System, Singapore, Singapore

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Rita Hameister

Rita Hameister

Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany

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Bernd Feuerstein

Bernd Feuerstein

Department of Mechanical Engineering, Magdeburg-Stendal University of Applied Sciences, Magdeburg, Germany

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Friedemann Awiszus

Friedemann Awiszus

Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany

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Heiko Meyer

Heiko Meyer

Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany

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Christoph H. Lohmann

Corresponding Author

Christoph H. Lohmann

Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany

Correspondence to: C. H. Lohmann (e-mail: [email protected])Search for more papers by this author
First published: 11 April 2014
Citations: 12

Abstract

Two-stage exchange arthroplasty is the current standard of care for arthroplasty-related infections. Reinfection rates up to 30% are reported, and there is significant morbidity for the patient. In cases of failure, arthrodesis or amputation may result. Ultrasonic treatment has the potential to eradicate biofilms and avoid two-stage exchange arthroplasty. Data in the specific context of arthroplasty infections is scant, and there is debate regarding optimal frequency and intensity of treatment. Surface topography alterations of the endoprosthetic components and damage to adjacent bone and cartilage have not been investigated. We found incomplete biofilm eradication and significant increase in surface roughness (maximum peak-to-valley height) of cobalt-chrome unicondylar knee components as well as reduction in articular cartilage thickness area from 10 retrieved femoral heads after low-frequency sonication treatment according to manufacturer-specified recommendations. Our data collectively suggest that sonication treatment for biofilm eradication in arthroplasty infections may not be effective and surface topography alterations may potentially reduce implant longevity. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 102B: 1835–1846, 2014.

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