FEA Applications for Orthopedics: An Overview

Longo, Umile Giuseppe; Stelitano, Giovanna; Salvatore, Giuseppe; Candela, Vincenzo; Naro, Calogero Di; Ambrogioni, L.; Amirouche, Farid; Denaro, Vincenzo

doi:10.1007/978-3-030-81549-3_9

Cited by 1 publication

(1 citation statement)

References 17 publications

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“…The emergence of in silico analysis has notably advanced clinical decision-making in orthopaedics, with finite element analysis (FEA) playing a pivotal role. FEA offers profound insights into biomechanics across various scenarios, proving crucial for fracture risk assessment in metastatic bone disease 1 , orthopaedic implant design, evaluation, and optimization 2 , comprehending the biomechanical effects of osteoporosis and osteoarthritis 3 , and allowing for more customized patient treatment strategies 4 . Crucially, FEA enables the study of important tissue-level localised stresses and/or strains that cannot be measured in vivo.…”

Section: Introductionmentioning

confidence: 99%

Effect of different constraining boundary conditions on simulated femoral stresses and strains during gait

Bavil,

Eghan-Acquah,

Diamond

et al. 2024

Sci Rep

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Finite element analysis (FEA) is commonly used in orthopaedic research to estimate localised tissue stresses and strains. A variety of boundary conditions have been proposed for isolated femur analysis, but it remains unclear how these assumed constraints influence FEA predictions of bone biomechanics. This study compared the femoral head deflection (FHD), stresses, and strains elicited under four commonly used boundary conditions (fixed knee, mid-shaft constraint, springs, and isostatic methods) and benchmarked these mechanics against the gold standard inertia relief method for normal and pathological femurs (extreme anteversion and retroversion, coxa vara, and coxa valga). Simulations were performed for the stance phase of walking with the applied femoral loading determined from patient-specific neuromusculoskeletal models. Due to unrealistic biomechanics observed for the commonly used boundary conditions, we propose a novel biomechanical constraint method to generate physiological femur biomechanics. The biomechanical method yielded FHD (< 1 mm), strains (approaching 1000 µε), and stresses (< 60 MPa), which were consistent with physiological observations and similar to predictions from the inertia relief method (average coefficient of determination = 0.97, average normalized root mean square error = 0.17). Our results highlight the superior performance of the biomechanical method compared to current methods of constraint for both healthy and pathological femurs.

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