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Biomechanical experiments on the abdominal wall: from ex vivo to in vivo

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HAL Id: hal-01857594

https://hal.archives-ouvertes.fr/hal-01857594

Submitted on 16 Aug 2018

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Biomechanical experiments on the abdominal wall: from

ex vivo to in vivo

Mélanie Ottenio, Florence Podwojewski, Doris Tran, Philippe Beillas, David

Mitton, Gaétan Guérin, Frédéric Turquier

To cite this version:

Mélanie Ottenio, Florence Podwojewski, Doris Tran, Philippe Beillas, David Mitton, et al.. Biome-chanical experiments on the abdominal wall: from ex vivo to in vivo. International workshop on ”Modelling across the Biologoy-Mechanics Interface”, Sep 2015, CASTRO URDIALES, Spain. �hal-01857594�

(2)

Biomechanical experiments on the abdominal wall: from ex vivo to

in-vivo

Mélanie Ottenio(1,2,3), Florence Podwojeski(1,2,3), Doris Tran(1,2,3), Philippe Beillas(1,2,3), David Mitton(1,2,3), Gaétan Guérin(4), Frédéric Turquier(4)

(1)Université de Lyon, F-69622, Lyon, France; (2)Université Claude Bernard Lyon 1, Villeurbanne ;

(3)IFSTTAR, UMR_T9406, LBMC Laboratoire de Biomécanique et Mécanique des Chocs, F69675, Bron ;

(4)

Covidien, Trévoux, France. Abstract :

The aim of the abdominal wall is to protect the internal organs. But the presence of a defect (a hole) on the abdominal wall can result to the protusion of an organ under the skin. This is called an incisional hernia. A surgical operation is then needed to repair the abdominal wall. But the reparation can fail due to critical loading imposed to the abdominal wall. If the surgery is successful, the patient may still suffer from pain or limited mobility. In this context, it is believed that the treatment of a hernia can be greatly improved by a better knowledge of the biomechanical response of the abdominal wall. In addition, it is planned to build a valid numerical model from this knowledge, which will constitute a useful tool to help in the design of new repair surgical meshes.

We here present different experimental protocols to get mechanical information on the abdominal wall in the context of the incisional hernia:

- a series of ex-vivo tests that have been performed to register the biomechanical response of the abdominal wall subjected to controlled and idealized mechanical loadings. The mechanical differences between the global response of an intact, damaged, and repaired abdominal wall have been quantified ([1],[2]), and the contribution of the different components tried to be extracted ([3]).

- a series of in-vivo tests that have enabled a collection of data under physiological loadings (i.e. active muscles). These tests have been applied to healthy subjects, as well as patients before the surgical reparation of a hernia.

References:

[1] Mechanical response of animal abdominal walls in vitro: Evaluation of the influence of a hernia defect and a repair with a mesh implanted intraperitoneally; F. Podwojewski, M. Ottenio, P. Beillas, G. Guérin, F. Turquier, D. Mitton, Journal of Biomechanics, vol. 46, pp.561-566, 2013.

[2] Mechanical response of human abdominal walls ex vivo: Effect of an incisional hernia and a mesh repair; F. Podwojewski, M. Ottenio, P. Beillas, G. Guérin, F. Turquier, D. Mitton; Journal of the Mechanical Behavior of Biomedical Materials; vol. 38, pp.126-133, 2014.

[3] Contribution of the skin, rectus abdominis and their sheaths to the structural response of the abdominal wall ex vivo; D. Tran, D. Mitton, D. Voirin, F. Turquier, P. Beillas; Journal of Biomechanics, Vol. 47 (12), pp.3056-3063, 2014.

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