Investigation on the load-displacement curves of a human healthy heel pad: In vivo compression data compared to numerical results

Fontanella, Chiara Giulia; Matteoli, Sara; Carniel, Emanuele Luigi; Wilhjelm, Jens E.; Virga, Antonio; Corvi, Andrea; Natali, Arturo N.

doi:10.1016/j.medengphy.2011.12.013

Cited by 54 publications

(51 citation statements)

References 28 publications

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“…In order to investigate the force-deformation behaviour of the heel pad in in vitro, in situ and in vivo conditions, several mathematical models have been developed and utilised [36,40,42,53,65,[68][69][70][71][72][73][74]. Additionally, a number of FE analyses were used to quantify the mechanical behaviour of the heel pad [45,52,[75][76][77][78][79][80].…”

Section: Quantifying Mechanical Behaviourmentioning

confidence: 99%

“…Two main in vivo material testing techniques have been used to inform inverse FE analyses: indentation [45,52,[75][76][77][78] and compression [79,80]. In both cases, the plantar soft tissue is compressed between a rigid loading surface and a bony prominence but in the case of indentation, the loading surface is significantly smaller than the plantar surface of the foot.…”

Section: Fe Modelsmentioning

confidence: 99%

“…To solve this limitation, Fontanella et al [79] combined in vitro data with the information gathered from in vivo tests. They utilised the in vitro tests to estimate the values of all twelve coefficients for their visco-hyperelastic material model and then used in vivo compression tests to modify six of the coefficients on subject-specific basis.…”

Section: Fe Modelsmentioning

confidence: 99%

“…Even though FE analyses have shed new light on plantar soft tissue biomechanics [35,45,79,[93][94][95][96][97], their actual contribution for the improvement of the diagnosis and treatment of the diabetic foot or other foot-related pathologies is limited [98]. This is mainly attributed to the difficulty of using FE analysis outside the research domain and particularly within the context of clinical practice [98].…”

Section: Fe Modelsmentioning

confidence: 99%

See 3 more Smart Citations

Viscoelasticity in Foot-Ground Interaction

Naemi¹,

Behforootan²,

Chatzistergos³

et al. 2016

Viscoelastic and Viscoplastic Materials

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Mechanical properties of the plantar soft tissue, which acts as the interface between the skeleton and the ground, play an important role in distributing the force underneath the foot and in influencing the load transfer to the entire body during weight-bearing activities. Hence, understanding the mechanical behaviour of the plantar soft tissue and the mathematical equations that govern such behaviour can have important applications in investigating the effect of disease and injuries on soft tissue function. The plantar soft tissue of the foot shows a viscoelastic behaviour, where the reaction force is not only dependent on the amount of deformation but also influenced by the deformation rate. This chapter provides an insight into the mechanical behaviour of plantar soft tissue during loading with specific emphasis on heel pad, which is the first point of contact during normal gait. Furthermore, the methods of assessing the mechanical behaviour including the in vitro/in situ and in vivo are discussed, and examples of creep, stress relaxation, rate dependency and hysteresis behaviour of the heel pad are shown. In addition, the viscoelastic models that represent the mechanical behaviour of the plantar soft tissue under load along with the equations that govern this behaviour are elaborated and discussed.

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Section: Quantifying Mechanical Behaviourmentioning

confidence: 99%

Section: Fe Modelsmentioning

confidence: 99%

Section: Fe Modelsmentioning

confidence: 99%

Section: Fe Modelsmentioning

confidence: 99%

See 2 more Smart Citations

Viscoelasticity in Foot-Ground Interaction

Naemi¹,

Behforootan²,

Chatzistergos³

et al. 2016

Viscoelastic and Viscoplastic Materials

View full text Add to dashboard Cite

show abstract

“…Yürüme ya da koşma sırasında oluşan şoku absorbe ederek ayak konforunu sağlar (17,18). Obezite, plantar adipoz dokunun biyolojik şok emici özelliğini ve elastikiyetini azaltarak, plantar fasya kalınlığını arttırarak plantar topuk ağrısına yatkınlık oluşturur (14).…”

Section: Discussionunclassified

Intrinsic Factors Affecting Early Results of Extracorporeal Shock Wave Therapy (ESWT) Treatment in Patients With Symptomatic Calcaneal Spur

Ercan¹,

Çetin

2017

TurkJSportsMed

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Objective: Extracorporeal shock wave therapy (ESWT) is a commonly used treatment modality in the treatment of epin calcanei. The aim of this study was to investigate the factors that were influencing the results of ESWT treatment on the patients with symptomatic calcaneal spurs. Material and Methods: 54 patients with symptomatic calcaneal spur who were administered ESWT treatment out of ninety--two patients who admitted to our clinic with heel pain were included in this study. The initial post treatment VAS scores, Roles and Maudsley score, age, height, body weight, body mass index, gender, calcaneal spur size (mm) of the patients were examined. The effects of gender, body mass index (BMI), age and spur length on efficacy of ESWT treatment have been investigated. Results: At the end of ESWT treatment, the VAS score and the Roles and Maudsley Pain Scale scores were significantly decreased (p < 0.001). On the other hand, there were no significant differences between subgroups in means of treatment efficacy (p> 0.05). In patients with symptomatic calcaneal spur, spur length was found to be moderately positively correlated with VAS score before treatment and one week after treatment. No correlation was found between other factors and clinical follow--up data (p>0,05).

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Biomechanical behavior of plantar fat pad in healthy and degenerative foot conditions

Fontanella

Nalesso

Carniel

et al. 2015

Med Biol Eng Comput

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The plantar fat pad of the human foot is a specific tissue made up of adipose chambers enveloped by fibrous septa. Aging, pathology or trauma may affect its histo-morphological configuration and mechanical response. The correlation between histo-morphological configuration and mechanical properties is analyzed by a computational approach, aiming to identify the influence of degenerative phenomena on plantar fat pad mechanics. Finite element meso-models, as numerical model of an intermediate-length scale, are developed for healthy and degenerative conditions, considering the different properties that degenerative phenomena may affect, such as the adipose chambers dimension, the fibrous septa thickness, the fibers orientation and the sub-components mechanical behavior. Histo-morphometric data are analyzed to identify average configurations of the fat chambers and fibrous septa, while specific constitutive formulations are provided to define their mechanical response. Numerical analyses are performed to identify the stress-strain behavior of the plantar fat pad considering healthy and degenerative configurations. The results from meso-models are applied to identify the parameters of a phenomenological constitutive formulation that interprets the overall human fat pad tissue mechanics. The constitutive formulation is implemented within a 3D finite element model of the heel region that is applied to evaluate the influence of degenerative phenomena on the overall mechanical functionality of the foot.

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Investigation on the load-displacement curves of a human healthy heel pad: In vivo compression data compared to numerical results

Cited by 54 publications

References 28 publications

Viscoelasticity in Foot-Ground Interaction

Viscoelasticity in Foot-Ground Interaction

Intrinsic Factors Affecting Early Results of Extracorporeal Shock Wave Therapy (ESWT) Treatment in Patients With Symptomatic Calcaneal Spur

Biomechanical behavior of plantar fat pad in healthy and degenerative foot conditions

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