The effects of blood and fat on Morse taper disassembly forces.

Carlos J. Lavernia, Luis Baerga, Robert L. Barrack, Evangelos Tozakoglou, Stephen D. Cook, Loren Lata, Mark D. Rossi

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Biological debris between modular components using Morse tapers in hip arthroplasty can lead to weakening of the implant construct. We conducted a study to determine the effect of blood and fat within the taper interface. Tapers were divided into groups 1 (clean), 2 (surface covered with blood and fat), and 3 (blood and fat wiped off). Each taper was impacted and disassembled 5 times. There was a difference in mean disassembly force between pulls within group 2. Thus, blood and fat contamination can have a significant effect on the potential for disassembly.

Original languageEnglish
Pages (from-to)187-190
Number of pages4
JournalAmerican journal of orthopedics (Belle Mead, N.J.)
Issue number4
StatePublished - Apr 2009


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