Journal article
Screw fixation of the syndesmosis alters joint contact characteristics in an axially loaded cadaveric model
Foot and ankle surgery, Vol.25(5), pp.594-600
10/2019
DOI: 10.1016/j.fas.2018.05.003
PMID: 30321946
Abstract
Background: The purpose of this study was to quantify the effects of rigid syndesmotic fixation on functional talar position and cartilage contact mechanics.
Methods: Twelve below-knee cadaveric specimens with an intact distal syndesmosis were mechanically loaded in four flexion positions (20° plantar flexion, 10° plantar flexion, neutral, 10° dorsiflexion) with zero, one, or two 3.5-mm syndesmotic screws. Rigid clusters of reflective markers were used to track bony movement and ankle-specific pressure sensors were used to measure talar dome and medial/lateral gutter contact mechanics.
Results: Screw fixation caused negligible anterior and inferior shifts of the talus within the mortise. Relative to no fixation, mean peak contact pressure decreased by 6%-32% on the talar dome and increased 2.4- to 6.6-fold in the medial and lateral gutters, respectively, depending on ankle position and number of screws.
Conclusions: Two-way ANOVA indicated syndesmotic screw fixation significantly increased contact pressure in the medial/lateral gutters and decreased talar dome contact pressure while minimally altering talar position.
Details
- Title: Subtitle
- Screw fixation of the syndesmosis alters joint contact characteristics in an axially loaded cadaveric model
- Creators
- Jessica E GoetzChamnanni RungpraiM. James RudertLucian C WarthPhinit Phisitkul
- Resource Type
- Journal article
- Publication Details
- Foot and ankle surgery, Vol.25(5), pp.594-600
- DOI
- 10.1016/j.fas.2018.05.003
- PMID
- 30321946
- ISSN
- 1268-7731
- eISSN
- 1460-9584
- Grant note
- DOI: 10.13039/100001279, name: Orthopaedic Research and Education Foundation
- Language
- English
- Date published
- 10/2019
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation
- Record Identifier
- 9984040221802771
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