title: Does Taper Angle Clearance Influence Fretting and Corrosion Damage at the Head-Stem Interface? A Matched Cohort Retrieval Study.
abstract: Previous studies have speculated that modular taper design may have an effect on the corrosion and material loss at the taper surfaces. We present a novel method to measure taper angle for retrieved head taper and stem trunnions using a roundness machine (Talyrond 585, Taylor Hobson, UK). We also investigated the relationship between taper angle clearance and visual fretting-corrosion score at the taper-trunnion junction using a matched cohort study of 50 ceramic and 50 metal head-stem pairs. In this study, no correlation was observed between the taper angle clearance and the visual fretting-corrosion scores in either the ceramic or the metal cohorts.
authors.affiliation: School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia PA.
authors.forename: Sevi B
authors.initials: SB
authors.lastname: Kocagöz
authors.affiliation: School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia PA ; Exponent Inc., Philadelphia PA.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Underwood
authors.affiliation: Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY ; Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse NY.
authors.forename: Shiril
authors.initials: S
authors.lastname: Sivan
authors.affiliation: Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY ; Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse NY.
authors.forename: Jeremy L
authors.initials: JL
authors.lastname: Gilbert
authors.affiliation: School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia PA.
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Macdonald
authors.affiliation: School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia PA ; Exponent Inc., Philadelphia PA.
authors.forename: Judd S
authors.initials: JS
authors.lastname: Day
authors.affiliation: School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia PA ; Exponent Inc., Philadelphia PA.
authors.forename: Steven M
authors.initials: SM
authors.lastname: Kurtz