Simulation and validation of spinal construct testing based on ASTM F1717.

ABSTRACT:

Introduction

Spinal fixation constructs must demonstrate reliable mechanical performance before clinical use. ASTM F1717 provides a standardized vertebrectomy model for comparative static evaluation. This study assessed construct mechanics and examined whether validated finite element analysis (FEA) can support simulation based design decisions.

Methods

Constructs comprised Ti-6Al-4V ELI pedicle screws and rods; the support blocks were UHMWPE. Testing followed ASTM F1717 under static compression and tension at 25 mm/min. Four screw configurations varied diameter and length (640, 650, 740, 750). A model form investigation compared a jig included model (JIM) and a jig excluded model (JEM) to quantify the tradeoff between accuracy and efficiency.

Results

Experiment-FEA a

SUBMITTER: Jeong BC 

PROVIDER: S-EPMC12690298 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature