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PREDICTING STRATEGY OF LUMBAR BELTS MECHANICAL PERFORMANCE AT DESIGN STAGE

Abstract : Low back pain is a pain felt in the lumbar region of the spine. Among a large series of care strategies, lumbar belt might be used to treat this pathology. Several clinical trials have shown the efficiency of lumbar belts [1]. Despite the high quantity of affected patients each year (about 80 % of the French population have /will suffer back pain in their life), few authors investigated the mechanism of action of belts. It is usually reported that the main mechanical effect of a lumbar belt is the pressure applied on the trunk. This pressure on the abdominal skin and muscles induce an increase of intra-abdominal pressure, a decrease of intra-discal pressure, and a proprioceptive reaction of the posture. Unfortunately, the link between the textile characteristics, the belt design and the pressure applied on the trunk has been poorly studied. Recently, Bonnaire [2] proposed a clinical study using optical methods and pressure map sensors; Munoz [3] proposed a detailed finite element model, closely linked to medical imaging showing the load release in the intervertebral disc, but resorting to a clinical study is a tedious task, and some early stage information should be of great help when designing new belts. The purpose of this communication is an assessment of the applied pressure by a lumbar belt onto the trunk from the mechanical properties of fabrics and the trunk shape. It gives a way to estimate the mechanical efficiency of belts at the design stage.
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Submitted on : Monday, December 5, 2016 - 3:21:52 PM
Last modification on : Wednesday, June 24, 2020 - 4:19:30 PM

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  • HAL Id : hal-01406590, version 1

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Rébecca Bonnaire, Jérôme Molimard, W.S Han, Reynald Convert, Paul Calmels. PREDICTING STRATEGY OF LUMBAR BELTS MECHANICAL PERFORMANCE AT DESIGN STAGE. 22nd Congress of the European Society of Biomechanics, Jul 2016, Lyon, France. ⟨hal-01406590⟩

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