Influence of the load modelling during gait on the stress distribution in a femoral implant

Gervais, Benjamin; Vadean, Aurélian; Brochu, Myriam; Raison, Maxime

doi:10.1007/s11044-018-9621-z

Cited by 9 publications

(11 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gervais et al . 7 reproduced the fracture site of an osteosynthetic plate at the lateral, distal femur in accordance with a case study and reported that only the dynamic computation of stresses yielded realistic results.…”

Section: Introductionsupporting

confidence: 74%

“…It is of major importance to reliably and rapidly obtain information on the dynamic in-vivo bone stresses and strains as these are fundamental parameters in mechanostat theory that characterizes the interplay between dynamic mechanical loading and musculoskeletal health 1 : Dynamic bone stresses and strains control bone remodeling 2,3 are indicators of bone fractures 2,4,5 and hence allow for tailored and monitored clinical treatment 6 . Additionally, dynamic stress analyses are essential to evaluate the mechanical properties of endoprosthetic implants in-situ during dynamic activities to improve implant design, implant durability and in turn, patient outcome 7,8 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Neuro-musculoskeletal flexible multibody simulation yields a framework for efficient bone failure risk assessment

Geier

Kebbach

Soodmand

et al. 2019

Sci Rep

View full text Add to dashboard Cite

Fragility fractures are a major socioeconomic problem. A non-invasive, computationally-efficient method for the identification of fracture risk scenarios under the representation of neuro-musculoskeletal dynamics does not exist. We introduce a computational workflow that integrates modally-reduced, quantitative CT-based finite-element models into neuro-musculoskeletal flexible multibody simulation (NfMBS) for early bone fracture risk assessment. Our workflow quantifies the bone strength via the osteogenic stresses and strains that arise due to the physiological-like loading of the bone under the representation of patient-specific neuro-musculoskeletal dynamics. This allows for non-invasive, computationally-efficient dynamic analysis over the enormous parameter space of fracture risk scenarios, while requiring only sparse clinical data. Experimental validation on a fresh human femur specimen together with femur strength computations that were consistent with literature findings provide confidence in the workflow: The simulation of an entire squat took only 38 s CPU-time. Owing to the loss (16% cortical, 33% trabecular) of bone mineral density (BMD), the strain measure that is associated with bone fracture increased by 31.4%; and yielded an elevated risk of a femoral hip fracture. Our novel workflow could offer clinicians with decision-making guidance by enabling the first combined in-silico analysis tool using NfMBS and BMD measurements for optimized bone fracture risk assessment.

show abstract

Section: Introductionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Neuro-musculoskeletal flexible multibody simulation yields a framework for efficient bone failure risk assessment

Geier

Kebbach

Soodmand

et al. 2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Figure A shows the creep strain‐time response curves at different stress levels which increases from 140 to 220 MPa considering the loads of artificial femoral stem prosthesis bears in clinical application . It can be found that the creep strain increases with the increase of stress levels, while decreases with the increase of content of CF obviously.…”

Section: Resultsmentioning

confidence: 99%

“…CFR‐PEEK is subjected to both static and dynamic compression loads as an implant material for spinal, traumatic, dental, and plastic surgery. In particular, when it is used as an artificial femoral stem prosthesis, the mechanical environment is more harsh and complicated . Therefore, this article focuses on not only the uniaxial compression and creep properties of PEEK and its CF composites, but also their ratcheting behavior.…”

Section: Discussionmentioning

confidence: 99%

“…As bearing materials for spinal, traumatic, dental and plastic surgery, CFR‐PEEK is often subjected to cyclic compressive loading. For example, when it is used as a femoral stem prosthesis, it will bear several times the load of human body during the exercise process of patients after recovery . Under such severe mechanical conditions, CFR‐PEEK materials may produce ratcheting deformation, which can damage the material and reduce its service life.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quasi‐static and ratcheting properties of PEEK reinforced by carbon fibers under uniaxial and cyclic compression

Liu

Gao

2019

Polymer Composites

View full text Add to dashboard Cite

Uniaxial compression tests were carried out to investigate the mechanical properties of polyetheretherketone (PEEK) with different contents of short carbon fibers (CF).Results show that the mechanical strength of PEEK can be improved with a certain mass fraction of CF. In order to study the viscosity of PEEK, static creep tests were performed considering the effects of stress level and content of CF. It is found that CF enhances the creep resistance of PEEK and 20 wt% carbon fiber-reinforced PEEK has the best performance. Moreover, the creep strain of the composites increases with increasing stress level. Subsequently, the ratcheting experiments under uniaxial cyclic compression with the stress-controlled condition were conducted. It is shown that the ratcheting strain increases with increasing stress amplitude and the holding time of peak stress. However, the effects of stress rate and content of CF on ratcheting strain are opposite. Meanwhile, the dependence of ratcheting behavior on loading history was also investigated. The results show that ratcheting strain is significantly affected by loading history of stress amplitude due to cyclic hardening of the material, while the effect of loading history of stress rate on ratcheting strain is negligible. K E Y W O R D Scarbon fiber, creep property, femoral implant, polyetheretherketone, ratcheting behavior

show abstract

Comments on the “Influence of the load modelling during gait on the stress distribution in a femoral implant” by Gervais et al.

Dumas

2019

Multibody Syst Dyn

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Comments on the "Influence of the load modelling during gait on the stress distribution in a femoralimplant" by Gervais et al.

show abstract

Influence of the load modelling during gait on the stress distribution in a femoral implant

Cited by 9 publications

References 31 publications

Neuro-musculoskeletal flexible multibody simulation yields a framework for efficient bone failure risk assessment

Neuro-musculoskeletal flexible multibody simulation yields a framework for efficient bone failure risk assessment

Quasi‐static and ratcheting properties of PEEK reinforced by carbon fibers under uniaxial and cyclic compression

Comments on the “Influence of the load modelling during gait on the stress distribution in a femoral implant” by Gervais et al.

Contact Info

Product

Resources

About