Strain and force transducers used in human and veterinary tendon and ligament biomechanical studies

Ravary, Bérangère; Pourcelot, Philippe; Bortolussi, C.; Konieczka, Stanislas; Crevier-Denoix, Nathalie

doi:10.1016/j.clinbiomech.2004.01.008

Cited by 60 publications

(47 citation statements)

References 45 publications

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“…Validation data for pathological conditions however do not currently exist and unfortu nately, direct validation in humans using current in vivo tendon force transducers is limited. The devices are inva sive (Ravary et al, 2004;Fleming and Beynnon, 2004), can only be placed on extrinsic tendons (e.g., the Achilles tendon by Komi et al (1992)) or used in the operation room during surgery (Dennerlein et al, 1998;Dennerlein et al, 1999;Dennerlein, 2005;Schuind et al, 1992), possess measurement errors inherent to transducer design (Ravary et al, 2004), and transducer calibration remains a largely unsolved problem. In large-scale musculoskeletal models, validity of muscle force estimates has been assessed indi rectly by comparing measured joint reaction forces against those predicted by modeling.…”

Section: Validationmentioning

confidence: 99%

See 1 more Smart Citation

Model-based estimation of muscle forces exerted during movements

Erdemir

McLean

Herzog

et al. 2007

Clinical Biomechanics

718

543

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Section: Validationmentioning

confidence: 99%

“…Direct measurements are currently only possible by transducers that are implanted and difficult to calibrate (Ravary et al, 2004;Fleming and Beynnon, 2004). A less invasive technique based on ultrasound is a promising alternative (Pourcelot et al, 2005).…”

Section: Recommendations For Researchmentioning

confidence: 99%

Model-based estimation of muscle forces exerted during movements

Erdemir

McLean

Herzog

et al. 2007

Clinical Biomechanics

718

543

View full text Add to dashboard Cite

“…Transducer based systems are comprised of displacement sensors that are physically attached to the tissue of interest and convert the mechanical energy of displacement (work) into an electrical signal that can be interpreted by a computer. Examples of such systems that have been used to measure tendon or ligament strain include extensometers, 28 liquid metal strain gauges, 25,28 Hall effect sensors, 25,28 and Differential Variable Reluctance Transducers. 11 Marker-tracking based techniques utilize basic continuum mechanics principles to compute the regional strain tensor between groups of ''markers'' identified on planar or volumetric images of the tissue.…”

Section: Introductionmentioning

confidence: 99%

Using Tendon Inherent Electric Properties to Consistently Track Induced Mechanical Strain

West

Bowden

2012

Ann Biomed Eng

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The present work explores the possibility that the inherent electrical properties of a tendon might allow it to act as its own strain gauge. Tendon has been shown to exhibit piezoelectric effects as well as streaming potentials when subjected to a mechanical stress. To assess the feasibility of using these properties to repeatably measure in situ strain,bovine Achilles tendon test specimens were connected in series with a control resistor in a direct current circuit. Longitudinal(along the collagen fiber direction) and transverse test specimens were subjected to sinusoidal tension while electrical resistance data for the specimens was collected. Change in resistance per unit strain and gauge factors (GFs) revealed a repeatable and significantly different correlation between resistance and strain for the longitudinal and transverse specimens (p<0.001). Change in resistance per unit strain values for longitudinal and transverse specimens were 0.85 and 1.76 MX/e, respectively while corresponding GFs were 0.52 and 0.74, respectively. Others have reported piezoelectric mechanisms and streaming potential mechanisms in hydrated collagen, however the present work is unique in presenting an accurate and repeatable model of anisotropic tendon behavior that could be used to develop an in situ strain sensor.

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“…Different techniques are used to measure muscle characteristics directly. In human studies, buckle transducers are implanted on the tendon in order to measure force during dynamic movements [21,23,28,35]. However, such measurement techniques are powerful approaches but they are highly invasive and therefore not applicable to clinical routine.…”

Section: Introductionmentioning

confidence: 99%

A new approach for the validation of skeletal muscle modelling using MRI data

et al. 2011

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Active and passive experiments on skeletal muscles are in general arranged on isolated muscles or by consideration of the whole muscle packages, such as the arm or the leg. Both methods exhibit advantages and disadvantages. By applying experiments on isolated muscles it turns out that no information about the surrounding tissues are considered what leads to insufficient specifications of the isolated muscle. Especially, the muscle shape and the fibre directions of an embedded muscle are completely different to that of the same isolated muscle. An explicit advantage, in contrast, is the possibility to study the mechanical characteristics in an unique, isolated way. On the other hand, by applying experiments on muscle packages the aforementioned pros and cons reverse. In such situation, the whole surrounding tissue is considered in the mechanical characteristics of the muscle which are much more difficult to identify. However, an embedded muscle reflects a much more realistic situation as in isolated condition. Thus, in the proposed work to our knowledge, we, for the first time, suggest a technique that allows to study characteristics of single skeletal muscles inside a muscle package without any computation of the tissue around the muscle of interest. In doing so, we use magnetic resonance imaging data of an upper arm during contraction. By applying a three-dimensional continuum constitutive muscle model we are able to study the biceps brachii inside the upper arm and validate the modelling approach by optical experiments.

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Strain and force transducers used in human and veterinary tendon and ligament biomechanical studies

Cited by 60 publications

References 45 publications

Model-based estimation of muscle forces exerted during movements

Model-based estimation of muscle forces exerted during movements

Using Tendon Inherent Electric Properties to Consistently Track Induced Mechanical Strain

A new approach for the validation of skeletal muscle modelling using MRI data

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