Abstract:
This research comprehensively investigates the biomechanical responses of the upper extremity to dynamic impact loads typically experienced during forward falls. Utilizing a multifaceted approach involving in vitro cadaveric experiments, in vivo human testing, and numerical finite element modeling, the study seeks to clarify the mechanical factors contributing to distal radius fractures—a common yet complex injury scenario. The experimental aspect includes dynamic loading tests on isolated distal radius specimens, which have quantified fracture thresholds and highlighted the importance of considering multi-dimensional force components and dynamic loading rates in injury risk predictions. In vivo testing methods, incorporating simulations of actual forward fall scenarios, provided insights into muscle activation patterns, joint kinematics, and real-time biomechanical responses that significantly influence injury mechanisms. Complementing these findings, finite element models have been validated and optimized to predict bone stresses, strains, and injury thresholds accurately under various impact conditions. The integrated approach emphasizes biomechanical methodologies to identify effective preventive strategies and better clinical interventions to reduce distal radius fracture incidents.
