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ESI Group: ESI Software Solutions Benefit the Biomedical Sector

ESI Software Solutions

Benefit the Biomedical Sector

A recent study helps to precisely understand

the challenges related to a hip prosthesis

Paris, France - April 2, 2015 -
ESI Group, pioneer and world-leading solution provider in
Virtual Prototypingfor manufacturing industries, and partner of numerous R&D
projects in the
biomedical sector for many years, announces the results of technical studies
recently carried out in France. These studies, performed in collaboration
with a hip prosthesis manufacturer, have led to a better understanding of the
issues related to the manufacturing, placement and in-vivo mechanical
behavior of such prostheses. These studies clearly illustrate the potential
for numerical simulation in the medical sector.

The fitting of total hip prostheses is one of the top five operations in
orthopedic surgery today; and such surgeries are steadily rising according to
statistics from the French Hospital Information Technology Agency (ATIH)[1].
With patients - especially athletes - needing surgery at an increasingly
younger age, and with growing life expectancies, prostheses must last longer.
These requirements for increased longevity and comfort raise several new
challenges for doctors as well as for prosthesis manufacturers.

For manufacturers, new materials, including ceramics and metal alloys, must be
evaluated and the design of prostheses must take into account various issues
related to breakage, wear and noise. Doctors, on the other hand, try to
mitigate the possible consequences of a micro separation between the
prosthesis' femoral head and the cavity in which it is inserted (the 'cup').
This separation can cause micro impacts during daily use and result in
premature wear.

For nearly a year the teams at ESI in France have conducted a study to help
doctors and manufacturers better understand the phenomena that lead to
prosthetic malfunctions. The first study was conducted to accurately simulate
the kinematics and the various stresses applied on a hip prosthesis in order
to understand the physics taking place in cases of extreme load, experienced
in accidental cases. The teams used ESI's integrated CAE
platform,Visual-Environmentto build models from geometry and material
description provided by the manufacturer. They then switched to ESI'sVirtual
Performance Solutionto study an impact equivalent to 9K Newton in 9ms, which
is representative of a severe shock, such as a patient heavily falling down
the stairs. Using ESI software solutions, the study has allowed doctors and
manufacturers to very accurately describe the kinematics and contact areas
following a decoaptation (separation of the femoral head and cup) of the

A second study was conducted on behalf of a prosthesis manufacturer, Science
et Médecine (SEM), based in Créteil, near Paris, France. The aim was to
compare three different designs of modular prostheses fabricated from
vanadium alloys, to determine which one was the most resistant in accidental
cases. The precise simulation of the fitting process of the prostheses has
helped SEM to accurately determine their future positioning, as well as the
structural damage expected when regulatory tests are performed.

"Numerical simulation is commonly used by SEM to achieve reliable design and
ensure the safe use of our medical devices. We are very sensitive to software
improvements, especially those incorporating dynamic simulation. The study
conducted in partnership with ESI has improved our understanding of the
mechanical behavior of our prostheses, for each tested design. The recent
developments of simulation tools help us in increasing the reliability of
medical devices including those requiring assemblies",
, Research and Development Director, Science et Médecine.

| |
| Image: Simulation results in Virtual Performance Solution: mechanical stresses |
|for a given load case. |
ForFouad El-Khaldi
, Industrial Strategy and Innovation Director for ESI Group, this study in the
health sector is part of the company's diversification strategy. He
explains,"ESI has already proven its value in helping companies in the
aerospace, energy and electronics domains. Now many other industries are
turning to Virtual Prototyping as they see the benefits of being able to
precertify products and anticipate product issues. Obviously, the health
sector represents a huge potential market because simulation can solve
customization issues and help manufacturers deliver the best solution for
each and every patient, in less time and at an affordable cost.

[1] Source :« Typologie et épidémiologie des prothèses totales de hanche en
France »,J Caton, P Papin (2012)

For more information about Visual-Environment, please

For more information about Virtual Performance Solution, please

For more ESI news,

ESI Group - Media Relations

Céline Gallerne
+33 1 41 73 58 46

For additional information, please feel free to contact our international
communications team:

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About ESI Group

ESIis a world-leading provider of Virtual Product Engineering software and
services with a strong foundation in the physics of the materials of which
products are built.

Founded over 40 years ago,ESIhas developed a unique proficiency in helping
industrial manufacturers replace physical prototypes by virtually replicating
the fabrication, assembly and testing of products in different
environments.Virtual PrototypingenablesESI's clients to evaluate the
performance of their product, and the consequences of its manufacturing
history, under normal or accidental conditions. By benefiting from this
information early in the process, enterprises know whether a product can be
built, and whether it will meet its performance and certification objectives,
before any physical prototype is built. To enable customer innovation,ESI's
solutions integrate the latest technologies in high performance computing and
immersive Virtual Reality, allowing companies to bring products to life
before they even exist.

Today,ESI's customer base spans nearly every industry sector. The company
employs about 1000 high-level specialists worldwide to address the needs of
customers in more than 40 countries. For further information,

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This announcement is distributed by NASDAQ OMX Corporate Solutions on behalf of NASDAQ OMX Corporate Solutions clients.
The issuer of this announcement warrants that they are solely responsible for the content, accuracy and originality of the information contained therein.
Source: ESI Group via Globenewswire


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