A biomechanical investigation of three fixation methods for unilateral denis type II sacral fractures using finite element analysis.

ABSTRACT:

Objective

Due to its inherent high instability, the selection of fixation strategies for unilateral Denis type II sacral fractures remains a controversial challenge in the field of traumatic orthopedics. This study focuses on unilateral Denis type II sacral fractures. By applying three different fixation methods, it aims to explore their biomechanical properties and provide a theoretical basis for optimizing clinical fixation protocols.

Methods

A ligament-intact three-dimensional finite-element model of a right-sided Denis type II sacral fracture, including ipsilateral superior and inferior pubic rami fractures, was generated. Three fixation models were simulated: (1) S1/S2 transiliac-transsacral screw fixation (S1/S2-TTS); (2) unilateral L4/5 triangular osteosynthesis (UTOS

SUBMITTER: Zhao P 

PROVIDER: S-EPMC12415403 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature