A biomechanical evaluation of three forms of internal fixation used in ankle arthrodesis

M. P. Dohm, J. B. Benjamin, J. Harrison, John Szivek

Research output: Contribution to journalArticle

42 Scopus citations


A biomechanical study was undertaken to evaluate the relative stability of three types of internal fixation used for ankle arthrodesis. Crossed screw fixation, RAF fibular strut fixation, and T-plate fixation were tested in 30 cadaver ankles using an MTS machine. T-plate fixation consistantly provided the stiffest construct when compared with the other types of fixation. Failure occurred by distraction of bony surfaces, posterior to the plane of fixation, in the crossed screw and RAF groups. In contrast, failure in the T- plate group occurred through compression of bone anterior to the midcoronal plane of the tibia. Although the stability of fixation is only one factor in determining the success or failure of ankle arthrodesis, the results of this study would support T-plate fixation over the other forms tested.

Original languageEnglish (US)
Pages (from-to)297-300
Number of pages4
JournalFoot and Ankle International
Issue number6
Publication statusPublished - 1994


ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

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