Differences in Cadaver and In-Vivo ATFL Strain
Presenter Type
UNO Graduate Student (Masters)
Major/Field of Study
Biomechanics
Advisor Information
Brian Knarr
Location
CEC RM #201/205/209
Presentation Type
Poster
Poster Size
48"x40"
Start Date
22-3-2024 9:00 AM
End Date
22-3-2024 10:15 AM
Abstract
An estimated 2 million people annually suffer lateral ankle sprains (LAS), with up to 40% facing chronic ankle instability (CAI) afterward. CAI can arise from mechanical, functional, or combined instabilities within the ankle joint. Notably, mechanical instability, often involving the antero-talofibular ligament (ATFL), is a common consequence of repeated LAS due to the ligament's susceptibility to stress during injury events. However, distinguishing between these instabilities remains unclear, hindering targeted treatment strategies for preventing LAS. Recent studies employing stress sonography, a method utilizing ultrasound to investigate length changes after stress application to the ankle joint, have identified length changes in the ATFL as a potential indicator for mechanical instabilities and the need for surgical intervention. Currently, research on surgical intervention primarily relies on values of mechanical properties obtained from fresh frozen cadavers to select appropriate materials for ATFL repair. Although utilizing fresh frozen cadavers is accepted as the standard for mechanically testing ligaments, it is essential to investigate potential differences in strain between in vivo and cadaveric samples. Stress sonography presents an opportunity for such investigation. Consequently, this study aims to compare cadaveric and in vivo ATFL strain values, providing insights into potential differences in ligament behavior between these conditions.
Differences in Cadaver and In-Vivo ATFL Strain
CEC RM #201/205/209
An estimated 2 million people annually suffer lateral ankle sprains (LAS), with up to 40% facing chronic ankle instability (CAI) afterward. CAI can arise from mechanical, functional, or combined instabilities within the ankle joint. Notably, mechanical instability, often involving the antero-talofibular ligament (ATFL), is a common consequence of repeated LAS due to the ligament's susceptibility to stress during injury events. However, distinguishing between these instabilities remains unclear, hindering targeted treatment strategies for preventing LAS. Recent studies employing stress sonography, a method utilizing ultrasound to investigate length changes after stress application to the ankle joint, have identified length changes in the ATFL as a potential indicator for mechanical instabilities and the need for surgical intervention. Currently, research on surgical intervention primarily relies on values of mechanical properties obtained from fresh frozen cadavers to select appropriate materials for ATFL repair. Although utilizing fresh frozen cadavers is accepted as the standard for mechanically testing ligaments, it is essential to investigate potential differences in strain between in vivo and cadaveric samples. Stress sonography presents an opportunity for such investigation. Consequently, this study aims to compare cadaveric and in vivo ATFL strain values, providing insights into potential differences in ligament behavior between these conditions.