Maher, Suzanne A.Suzanne A.MaherLipman, Joseph D.Joseph D.LipmanCurley, Luke J.Luke J.CurleyGilchrist, M. D.M. D.Gilchristet al.2013-10-012013-10-012003 Elsev2003-10The Journal of Arthroplastyhttp://hdl.handle.net/10197/4653Although new generation alumina ceramics have exhibited a reduced incidence of fracture, concern still persists about the behavior of ceramic acetabular liners under impact conditions. The objective of this study was to explore whether fracture of a new generation alumina ceramic liner was likely to occur in vivo. Ceramic liners were impacted with forces of 23, 21, 15, and 12 kN (n = 3 at each force). At 23 kN, all 3 ceramic liners fractured on the first impact; at 12 kN none of the ceramic liners fractured after 20 impacts. The threshold force of 12 kN is large in comparison with estimated physiologic forces on the hip during falls or stumbling, suggesting that ceramic liner fracture is not a definite consequence of liner impact.enThis is the author's version of a work that was accepted for publication in The Journal of Arthroplasty. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in The Journal of Arthroplasty (18, 7, (2003)) DOI: http://dx.doi/org/10.1016/S0883-5403(03)00335-8Ceramic acetabular linerImpingementImpactTotal hip arthroplastyAlternate bearingsAluminaJournal Article18793694110.1016/S0883-5403(03)00335-82013-09-24https://creativecommons.org/licenses/by-nc-nd/3.0/ie/