Influence of double rods and interbody cages on range of motion and rod stress after spinopelvic instrumentation: a finite element study.

Aleksander LeszczynskiFrank MeyerYann-Philippe CharlesCaroline DeckNicolas BourdetRémy Willinger

Published in: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society (2022)

Double rods and IBCs reduced global and segmental ROM as well as von Mises stress in rods. The results suggest a possible benefit in using both strategies to minimize pseudarthrosis and instrumentation failure. However, increased ROM in adjacent levels and the shift of maximal von Mises stress to adjacent areas might cause complications elsewhere.

Keyphrases

finite element
stress induced
minimally invasive
resistance training
heat stress
body composition