A 3D model of muscle reveals the causes of nonuniform strains in the biceps brachii

Blemker, Silvia S.; Pinsky, Peter M.; Delp, Scott L.

doi:10.1016/j.jbiomech.2004.04.009

Cited by 376 publications

(371 citation statements)

References 29 publications

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“…As highlighted by Blemker et al [44], variation in fascicle lengths and curvature of muscle fascicles can help explain heterogeneity in strain within the human biceps brachii. They used a three-dimensional muscle model to interpret in vivo data obtained by Pappas et al [11].…”

Section: Functional Heterogeneity Within Musclesmentioning

confidence: 95%

“…In fact, it is unlikely that many muscles actually exhibit homogeneous structure and function. The added level of complexity is something that will require future consideration when constructing musculoskeletal models [43,44] or performing in vivo muscle experiments. Despite the apparent ubiquity of this regional variation, a complete understanding of the mechanisms underlying the dynamic variation and/or the functional ramifications of this heterogeneity is lacking.…”

Section: Functional Heterogeneity Within Musclesmentioning

confidence: 99%

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Functional and architectural complexity within and between muscles: regional variation and intermuscular force transmission

Higham

Biewener

2011

Phil. Trans. R. Soc. B

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Over the past 30 years, studies of single muscles have revealed complex patterns of regional variation in muscle architecture, activation, strain and force. In addition, muscles are often functionally integrated with other muscles in parallel or in series. Understanding the extent of this complexity and the interactions between muscles will profoundly influence how we think of muscles in relation to organismal function, and will allow us to address questions regarding the functional benefits (or lack thereof ) and dynamics of this complexity under in vivo conditions. This paper has two main objectives. First, we present a cohesive and integrative review of regional variation in function within muscles, and discuss the functional ramifications that can stem from this variation. This involves splitting regional variation into passive and active components. Second, we assess the functional integration of muscles between different limb segments by presenting new data involving in vivo measurements of activation and strain from the medial gastrocnemius, iliotibialis cranialis and iliotibialis lateralis pars preacetabularis of the helmeted guinea fowl (Numida meleagris) during level running on a motorized treadmill. Future research directions for both of these objectives are presented.

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Section: Functional Heterogeneity Within Musclesmentioning

confidence: 95%

Section: Functional Heterogeneity Within Musclesmentioning

confidence: 99%

Functional and architectural complexity within and between muscles: regional variation and intermuscular force transmission

Higham

Biewener

2011

Phil. Trans. R. Soc. B

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“…Research into muscle behaviour has been carried out by many in the past, including Joyce [71,72], Blemker [10,8,9], and Aigner [2]. Important work on biological materials by Holzapfel et el.…”

Section: Soft Tissue and Fe Modelsmentioning

confidence: 99%

The biomechanics of the human tongue

Kajee

Pelteret

Reddy

2013

Numer Methods Biomed Eng

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AcknowledgementsI would like express my gratitude to the following people for their assistance, leading to the successful completion of this work:The invaluable guidance provided by Prof. B. D. Reddy was integral to completing this project.It was an honour and a privilege to have worked with someone with such vast experience, knowledge and wisdom. Throughout my time at Cerecam, he has shown great patience and understanding.Dr. Andrew T. McBride assisted in times of difficulty, even during the most demanding times of his own PhD studies. His generosity, kindness, and outstanding work ethics have been an inspiration.Jean-Paul Pelteret is the person I worked with the most during this project. Without his invaluable assistance, this project could be likened to a Sisyphean task.It was an honour to have worked amongst such an esteemed group of academics at Cerecam. Many lunch hours and tea-breaks discussing everyday issues in a friendly atmosphere has proven fruitful. The geometry of the tongue, and each muscle group of the tongue, are visually identified, and its geometry captured using Mimics [100]. Various image processing tools available in Mimics, such as image segmentation, region-growing and volume generation were used to form the three-dimensional model of the tongue geometry. Muscle fibre orientations were extracted from the same dataset, also using Mimics.The muscle model presented here is based on Hill's three-element model for representation of the constituent parts of muscle fibres. This Hill-type muscle model also draws from recent work in muscle modelling, by Martins [88]. The model is implemented in an Abaqus user element (UEL) subroutine [24]. The transversely isotropic behaviour of the muscle tissue is accounted for, as well as the influence of muscle activation.The mechanics of the model is limited to static, small-strain, anisotropic, linear-elastic behaviour, and the governing equations are suitably linearized. The body position of the patient during an apneic episode is accounted for in the simulations, as well as the effect of gravity. The focus of this study is on tongue muscle behaviour under gravitational loading, simulating a simplified OSA event.Future models will incorporate airway pressure as well. The behaviour of the model is illustrated in a number of benchmark tests, and computational examples.iii

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“…123). Parameters for the passive fiber behavior were chosen based on parameters for muscle provided by Blemker et al (2005):…”

Section: Modelmentioning

confidence: 99%

A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape

Stavness

Nazari

Perrier

et al. 2013

J Speech Lang Hear Res

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Method: Our methodology is based on computer simulations with a sophisticated biomechanical model coupling the jaw, tongue and face. First, the influence of Orbicularis Oris (OO) muscle geometry is analyzed. We assessed how changes to the OO anatomical implementation, in terms of depth (from epidermis to the skull) and peripheralness (proximity to the lip horn center), affected lip protrusion, lip spreading and lip area. Second, we evaluated the capability of the lip/jaw system to generate protrusion and rounding, or labial closure for different jaw heights.Results: (1) A highly peripheral and moderately deep OO implementation is most appropriate for achieving protrusion and rounding; (2) a superficial implementation facilitates closure; (3) protrusion and rounding requires a high jaw position; (4) labial closure is achievable for various jaw heights.Conclusions: Our results provide a quantitative assessment of how physical characteristics of the speech motor plant can determine regularities and variability in speech articulations across humans and over time.

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A 3D model of muscle reveals the causes of nonuniform strains in the biceps brachii

Cited by 376 publications

References 29 publications

Functional and architectural complexity within and between muscles: regional variation and intermuscular force transmission

Functional and architectural complexity within and between muscles: regional variation and intermuscular force transmission

The biomechanics of the human tongue

A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape

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