Tibiotalocalcaneal arthrodesis: A biomechanical analysis of the rotational stability of the Biomet Ankle Arthrodesis Nail

M. R. Mann, B. G. Parks, S. S. Pak, S. D. Miller

Research output: Contribution to journalArticle

Abstract

We hypothesized that the posterior-to-anterior (PA) calcaneal interlocking screw of the Biomet Ankle Arthrodesis Nail would increase rotational stability secondary to increased bone purchase compared with the standard lateral-to-medial (transverse) screw. Each of 10 fresh human cadaver lower limbs (five matched pairs) were stabilized with a nail inserted retrograde through the calcaneus, talus, and tibia according to standard technique. One limb of each pair was fixed with a transverse calcaneal screw; the contralateral limb, with a PA calcaneal screw. Each limb was then subjected to torsional testing on an MTS Mini Bionix load frame. The PA screw construct was significantly stiffer than the transverse screw construct: 1.96 and 1.41 Nm/E, respectively (P < 0.036).

Original languageEnglish (US)
Pages (from-to)731-733
Number of pages3
JournalFoot and Ankle International
Volume22
Issue number9
DOIs
StatePublished - Jan 1 2001

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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