Biomechanical Impact of Cement Augmentation on Pedicle Screw Fixation and Adjacent Segment Disease in Multilevel Lumbar Fusion: A Finite Element Analysis.

ABSTRACT:

Objective

Cement augmentation is widely used to enhance pedicle screw fixation, particularly in osteoporotic patients. However, its effects on adjacent segment disease (ASD) and implant failure in multilevel lumbar interbody fusion remain unclear. This study aimed to assess the effectiveness of cement augmentation in preventing implant failure and its impact on ASD risk using finite element analysis (FEA).

Methods

A FEA of L2-S1 multilevel lumbar interbody fusion was performed to evaluate the biomechanical effects of cement augmentation. Three models were analyzed under normal and osteoporotic conditions: type 1 (no augmentation), type 2 (upper instrumented vertebra [UIV] augmentation), and type 3 (UIV and UIV+1 augmentation). Range of motion (ROM), intradiscal pressure (IDP

SUBMITTER: Jo MY 

PROVIDER: S-EPMC12518904 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature