A three-dimensional finite element analysis of finger joint stresses in the MCP joint while performing common tasks

Butz, Kent D.; Merrell, Gregory A.; Nauman, Eric A.

doi:10.1007/s11552-012-9430-4

Cited by 10 publications

(7 citation statements)

References 26 publications

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“…Although such models provide estimations of tendon forces and resultant joint contact forces, they neglect the nonlinear deformation of soft tissues and the local stress distribution. Conversely, FE finger models provide estimations of local contact mechanics but focus on a single joint (Hashizume et al 1994), model joints in 2 D (Butz et al 2012a), neglect muscle actions and tendon paths (Butz et al 2012b) and apply nonphysiological boundary conditions (Harih 2019). To take advantage of both approaches, hybrid MSK-FE models have been developed to investigate different musculoskeletal structures, such as the wrist (G ıslason et al 2010), the foot (Isvilanonda et al 2012) or the knee (Besier et al 2005;Halonen et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Estimation of joint contact pressure in the index finger using a hybrid finite element musculoskeletal approach

Faudot

Milan

Monsabert

et al. 2020

Computer Methods in Biomechanics and Biomedical Engineering

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The knowledge of local stress distribution in hand joints is crucial to understand injuries and osteoarthritis occurrence. However, determining cartilage contact stresses remains a challenge, requiring numerical models including both accurate anatomical components and realistic tendon force actuation. Contact forces in finger joints have frequently been calculated but little data is available on joint contact pressures. This study aimed to develop and assess a hybrid biomechanical model of the index finger to estimate in-vivo joint contact pressure during a static maximal strength pinch grip task. A finite element model including bones, cartilage, tendons, and ligaments was developed, with tendon force transmission based on a tendon-pulley system. This model was driven by realistic tendon forces estimated from a musculoskeletal model and motion capture data for six subjects. The hybrid model outputs agreed well with the experimental measurement of fingertip forces and literature data on the physiological distribution of tendon forces through the index finger. Mean contact pressures were 6.9 ± 2.7 MPa, 6.2 ± 1.0 MPa and 7.2 ± 1.3 MPa for distal, proximal interphalangeal and metacarpophalangeal joints, respectively. Two subjects had higher mean contact pressure in the distal joint than in the other two joints, suggesting a mechanical cause for the prevalence of osteoarthritis in the index distal joint. The inter-subject variability in joint contact pressure could be explained by different neuromuscular strategies employed for the task. This first application of an effective hybrid model to the index finger is promising for estimating hand joint stresses under daily grip tasks and simulating surgical procedures.

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Section: Introductionmentioning

confidence: 99%

Estimation of joint contact pressure in the index finger using a hybrid finite element musculoskeletal approach

Faudot

Milan

Monsabert

et al. 2020

Computer Methods in Biomechanics and Biomedical Engineering

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“…From this we selected two materials that showed the greatest promise for successful printing and proceeded to optimise the formulations ready for scale up [25][26][27][28] ( Supplementary Table S1): tricyclo[5.2.1.02,6]decanedimethanol diacrylate (TCDMDA) and ethylene glycol dicyclopentenyl ether acrylate (EGDPEA). Sixteen formulations were then investigated where the photoinitiator and the candidate monomers were combined covering a breadth of utility in different environments and potential reaction speeds (Supplementary Table S2) as both could influence the product performance [22,[29][30][31] . Both Norrish type I (nitrogen environment) and Norrish type II (air environment) initiators were evaluated with respect to compatibility of the formulations when processing in different environments.…”

Section: Resultsmentioning

confidence: 99%

Inkjet based 3D Printing of bespoke medical devices that resist bacterial biofilm formation

Begines

Dubern

et al. 2020

Preprint

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AbstractWe demonstrate the formulation of advanced functional 3D printing inks that prevent the formation of bacterial biofilms in vivo. Starting from polymer libraries, we show that a biofilm resistant object can be 3D printed with the potential for shape and cell instructive function to be selected independently. When tested in vivo, the candidate materials not only resisted bacterial attachment but drove the recruitment of host defences in order to clear infection. To exemplify our approach, we manufacture a finger prosthetic and demonstrate that it resists biofilm formation – a cell instructive function that can prevent the development of infection during surgical implantation. More widely, cell instructive behaviours can be ‘dialled up’ from available libraries and may include in the future such diverse functions as the modulation of immune response and the direction of stem cell fate.

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“…Structural static analysis was performed to evaluate the biomechanical behavior of the PP1s using the Finite Element Package ANSYS 17.1 in a Dell Precision™ Workstation T5500 with 48 GB and 5.33 GHz. Elastic, linear and homogeneous material properties were assumed for the cortical bone using the values of E (Young's modulus) 18.6 GPa and v (Poisson's ratio) 0.3, while for the trabecular bone values of E (Young's modulus) 0.75 GPa and v (Poisson's ratio) 0.3 were assumed (Butz et al, 2012).…”

Section: Model Propertiesmentioning

confidence: 99%

Finite element analysis of the proximal phalanx of the thumb in Hominoidea during simulated stone tool use

BUCCHI¹,

PÜSCHEL²,

LORENZO³

et al. 2020

Comptes Rendus Palevol

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Finite element analysis was applied to analyze six individuals from different primate species (Homo sapiens Linnaeus, 1758, Homo neanderthalensis King, 1864, Pan troglodytes Blumenbach, 1779, Gorilla gorilla Savage, 1847, Pongo pygmaeus Linnaeus, 1760 and Hylobates lar Linnaeus, 1771) to identify stress distribution patterns on the pollical proximal phalanx during simulated hammerstone use. We expected the stress to be better distributed in our species than in other hominids based on the idea that, unlike apes, the human hand is adapted to tool-related behaviors. Our results indicate that the human phalanx unevenly distributes stresses and is one of the most fragile of all, especially when a small hammerstone is simulated. Tool orientation relative to the phalanx did not have a substantial effect on average stress or distribution. We conclude that great apes can resist loads exerted during this activity more efficiently than humans and that there were probably other evolutionary factors acting on this bone in our species.

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A three-dimensional finite element analysis of finger joint stresses in the MCP joint while performing common tasks

Cited by 10 publications

References 26 publications

Estimation of joint contact pressure in the index finger using a hybrid finite element musculoskeletal approach

Estimation of joint contact pressure in the index finger using a hybrid finite element musculoskeletal approach

Inkjet based 3D Printing of bespoke medical devices that resist bacterial biofilm formation

Finite element analysis of the proximal phalanx of the thumb in Hominoidea during simulated stone tool use

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