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Do Stem Taper Microgrooves Influence Taper Corrosion in Total Hip Arthroplasty? A Matched Cohort Retrieval Study.
Arnholt, Christina M; MacDonald, Daniel W; Underwood, Richard J; Guyer, Eric P; Rimnac, Clare M; Kurtz, Steven M; Mont, Michael A; Klein, Gregg R; Lee, Gwo-Chin; Chen, Antonia F; Hamlin, Brian R; Cates, Harold E; Malkani, Arthur L; Kraay, Matthew J.
Afiliación
  • Arnholt CM; Implant Research Center, Drexel University, Philadelphia, Pennsylvania.
  • MacDonald DW; Implant Research Center, Drexel University, Philadelphia, Pennsylvania.
  • Underwood RJ; Exponent, Inc, Philadelphia, Pennsylvania.
  • Guyer EP; Exponent, Inc, Atlanta, Georgia.
  • Rimnac CM; Center for the Evaluation of Implant Performance, Case Western Reserve University, Cleveland, Ohio.
  • Kurtz SM; Implant Research Center, Drexel University, Philadelphia, Pennsylvania; Exponent, Inc, Philadelphia, Pennsylvania.
  • Mont MA; Sinai Hospital of Baltimore, Baltimore, Maryland.
  • Klein GR; Hartzband Center for Hip & Knee Replacement, Paramus, New Jersey.
  • Lee GC; Presbyterian Medical Center, University of Pennsylvania Health Systems, Philadelphia, Pennsylvania.
  • Chen AF; Rothman Institute, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania.
  • Hamlin BR; University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
  • Cates HE; Tennessee Orthopaedic Clinics, Knoxville, Tennessee.
  • Malkani AL; Jewish Hospital and St. Mary's Health Care, Louisville, Kentucky.
  • Kraay MJ; Center for the Evaluation of Implant Performance, Case Western Reserve University, Cleveland, Ohio.
J Arthroplasty ; 32(4): 1363-1373, 2017 04.
Article en En | MEDLINE | ID: mdl-28111124
BACKGROUND: Previous studies identified imprinting of the stem morphology onto the interior head bore, leading researchers to hypothesize an influence of taper topography on mechanically assisted crevice corrosion. The purpose of this study was to analyze whether microgrooved stem tapers result in greater fretting corrosion damage than smooth stem tapers. METHODS: A matched cohort of 120 retrieved head-stem pairs from metal-on-polyethylene bearings was created controlling for implantation time, flexural rigidity, apparent length of engagement, and head size. There were 2 groups of 60 heads each, mated with either smooth or microgrooved stem tapers. A high-precision roundness machine was used to measure and categorize the surface morphology. Fretting corrosion damage at the head-neck junction was characterized using the Higgs-Goldberg scoring method. Fourteen of the most damaged heads were analyzed for the maximum depth of material loss and focused ion beam cross-sectioned to view oxide and base metal. RESULTS: Fretting corrosion damage was not different between the 2 cohorts at the femoral head (P = .14, Mann-Whitney) or stem tapers (P = .35). There was no difference in the maximum depths of material loss between the cohorts (P = .71). Cross-sectioning revealed contact damage, signs of micro-motion, and chromium-rich oxide layers in both cohorts. Microgroove imprinting did not appear to have a different effect on the fretting corrosion behavior. CONCLUSION: The results of this matched cohort retrieval study do not support the hypothesis that taper surfaces with microgrooved stems exhibit increased in vivo fretting corrosion damage or material release.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diseño de Prótesis / Falla de Prótesis / Prótesis de Cadera Tipo de estudio: Etiology_studies / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: J Arthroplasty Asunto de la revista: ORTOPEDIA Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diseño de Prótesis / Falla de Prótesis / Prótesis de Cadera Tipo de estudio: Etiology_studies / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: J Arthroplasty Asunto de la revista: ORTOPEDIA Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos