Minimally invasive transforaminal and anterior lumbar interbody fusion surgery at level L5-S1.

D S FidalgoB AreiasL C SousaMarco P L Parente Renato M Natal JorgeH SousaJ M Gonçalves

Published in: Computer methods in biomechanics and biomedical engineering (2020)

This paper presents a finite element analysis to investigate the biomechanical changes caused by transforaminal (TLIF) and anterior lumbar interbody fusion (ALIF) at the L5-S1 level, applying two different implants: T_PAL (TLIF) and SynFix (ALIF). The main objective is to determine which one is more stable for patients. Numerical simulations of segmental motion show that, in the early postoperative phase, displacements and rotation angles obtained in ALIF are greater than the corresponding ones obtained in TLIF, as well as the principal stress values on the ligaments. So, TLIF performed with T_PAL is more stable than ALIF, especially during the recovery phase.

Keyphrases

minimally invasive
finite element analysis
robot assisted
end stage renal disease
ejection fraction
newly diagnosed
patients undergoing
prognostic factors
patient reported