CME OnDemand: 2022 AOFAS Annual Meeting-Finite Element Analysis for First Metatarsophalangeal Joint Arthrodesis Demonstrates Reduction in Stress Across Bio-Integrative Fixation Over Traditional Metal Fixation

Finite Element Analysis for First Metatarsophalangeal Joint Arthrodesis Demonstrates Reduction in Stress Across Bio-Integrative Fixation Over Traditional Metal Fixation

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Video Transcription

Video Summary

The video discusses the use of a novel biointegrative fiber reinforced screw and nail construct for first metatarsophalangeal joint arthrodesis. The procedure is commonly performed to treat conditions such as hallux rigidus, bunion deformities, and failed hallux valgus. The first MTP joint experiences high mechanical forces during walking, and a successful fusion requires joint preparation and rigid fixation. The study utilizes finite element analysis to compare the mechanical strength and stress concentrations of the biointegrative implants and conventional metal fixation. The results show that the biointegrative implants provide equivalent mechanical fixation strength with lower bone implant stress concentrations, suggesting it as an alternative to metal fixation in foot and ankle surgery.

Asset Subtitle

David I. Pedowitz, MD, MS, Ezequiel Palmanovich, MD, Meir Nyska, MD

Keywords

biointegrative fiber reinforced screw

nail construct

first metatarsophalangeal joint arthrodesis

hallux rigidus

bunion deformities