Cementing a Polyethylene Cup into a Well Fixed Acetabular Metal-on-Metal Resurfacing Component? An Experimental Investigation. Issue 4 (July 2017)

• Record Type: Journal Article
• Authors: Klotz, Matthias C.M.; Jäger, Sebastian; Kretzer, Jan-Philippe; Beckmann, Nicholas A.; Thomsen, Marc; Bitsch, Rudi G.
• Is Part Of: Hip international. Volume 27:Issue 4(2017)
• Page Start: 373
• Page End: 377
• Publication Date: 2017-07
• Subjects: Biomechanical -- Cement augmentation -- Hip resurfacing -- Salvage procedure; Hip joint -- Pathophysiology -- Periodicals; Hip joint -- Diseases -- Periodicals; Hip joint -- Surgery -- Periodicals; 617.581005
• DOI: 10.5301/hipint.5000474
• Languages: English
• ISSNs: 1120-7000

Abstract

Introduction: Adverse reactions to metal debris often indicate revision surgery in metal-on-metal (MoM) hip arthroplasty and an exchange of the MoM bearing into either a metal on polyethylene or a ceramic-on-polyethylene articulation. At the moment the removal of the entire implant system is the most reasonable method. In order to avoid bone loss caused by the removal of a well-fixed acetabular component, the purpose of this study was to measure the stability of a cemented polyethylene (PE) cup in an acetabular hip resurfacing component and to examine if such a method could be suitable for clinical use. Methods: PE cups were cemented into 2 different hip resurfacing components and biomechanical tests were applied to measure failure torques under lever out and rotational load. Results: In all cases failure of the interface between the resurfacing components and the cement layer occurred at a very low load (0.14 Nm-61.50 Nm). Discussion: The early failure occurred due to lacking interdigitation of cement and the polished metal surface. Thus we warn against cementing a PE cup into acetabular hip resurfacing components for clinical use.