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unknown user
11-22-1993, 10:03 PM
Dear Colleagues

I am grateful to those who replied --including the non-subscribers-- my
request on spine modelling. I am a member of academic staff in the Dept. of
Computer Studies in Loughborough Uni.Tech.and I am working on mathematical
and computer (dynamic) modelling of spine and its role in improved
engineering design. I am hoping to contact the respondents in the near
future. I also enclose the list of names and interests for those who wish
to communicate.

Regards

Serpil Acar

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Dr B Serpil Acar
Department of Computer Studies,
Loughborough University of Technology
Loughborough, Leics.
LE11 3TU
ENGLAND

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tel: +44 509 222879 fax: +44 509 211586 e-mail: S.Acar@lut.ac.uk

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RESPONDENTS AND THEIR INTERESTS:

Donal McNally
D.S.McNally@bristol.ac.uk

developed an analytical model of disc mechanics which does not rely on
pre-defined fibre paths.
----------------------------

John P. Peach
peach@ug.cs.dal.ca

written a program (3/4 written anyway) that looks at the Resultant Joint
Moment and Resultant Joint Forces at the L4/L5.
----------------------------

Huub Toussaint
huub toussaint FEM model
We emphasize the the usage of parallel machines and parallel
programming tools for the model implementation. A parallel
solver for FEM models is in work.

2.) Personally, I work on a simple dynamical mode (rigid bodys
connected by springs and dampers) on which we want to
study the physiological control loops which keep the
human spine stable. The main questions I am working on is:
How do the muscles contributed actively to the spinal
stability ? Which muscles are involved ? Can we model the
basic physiological feedback loops ?
--------------------------------

Ian Stokes
stokes@suncrie.ensam-paris.fr

Doing spine modelling
--------------------------------

Lynne Eckert Bilston
bilston@nerve.seas.upenn.edu

modelling cervical spinal cord injury, with the spinal vertebrae and spnal
cord, and the brain and skull incorporated into the finite element model,
using Dyna3D.
--------------------------------

David J. Pearsall
PEARSALD@QUCDN.QueensU.CA

current study is in refining segmental mass and
inertial parameters of the trunk by using CT and MR imagery. The
motivation for this research is to provide better parameters for modeling
the supportive aspects that the spine must contend with
--------------------------------

Michael Pierrynowski
pierryn@fhs.csu.McMaster.CA

just recently measure the kinematics of L4-S1 in a patient with
inter-pedicle
screws and wires. The data looks quite nice. I am also in the process of
developing a graphic model of the lumbar vertebra
--------------------------------

Jaap van Dieen
BDIEEN@AGRM05.OVO.AGRO.nl

working on modelling the rheological behaviour of spinal
motion segment. I have tried succesfully to use these models to
predict damage occurring due to compression forces on the basis of
the maximum distortion energy criterion. An article on
this work has been submitted to the J. Biomech. Furthermore, I'm
interested in the development of morphologically correct (finite
element models) of motion segment to see of the criterion used for
predicting damage under pure axial compression can be generalized to
more complex loading. Others in our group are working on linked
segment models and distribution models to calculate torques and forces
working onthe spine in vivo.
--------------------------------

Michael Lee
michael@aero.ae.su.OZ.AU

My interest is in relation to modelling the spine for the purpose
of simulating manipulation. I have generated a finite element model
of the spine (thoraco-lumbar), ribcage and pelvis. The model is a linear
passive static one at the moment. In the future I plan to model
non-linearities,viscous effects and muscles
--------------------------------

Trey Crisco
CRISCO@YALEMED.EARN

just begining an analysis of the cervical spine
with the goal of examining the effect of neck properties on head
acceleration during impact loading.
--------------------------------

Mack GardnerMorse
gardnerm@salus.med.uvm.edu

working with Dr. Ian A.F. Stokes on modeling
the spine on the computer
---------------------------------

Gert Nilson
geni@ip.chalmers.se

I (although I am not a biomech-l subscriber) am developing such a model in
the MADYMO-format
---------------------------------

Beth Higbie HPERD
bhigbie@moe.coe.uga.edu

physical therapist and athletic trainer and I am presently completing my
Ph.D. in exercise physiology at the University of Georgia. My main focus in
clinical practice has been cervical and lumbar spine problems.
-------------------------------

Bonita J. Sawatzky
sawatzky@cs.ubc.ca

research biomechanist at British Columbia's Children's Hospital
working with an Orthopaedic surgeon, Stephen Tredwell, and a computher
science professor at the University of British Columbia, Kelly Booth, to
model the scoliotic spine during spine surgery. We are using stereo-
photogrammetry to collect the data and then using mathematical
algorithms to model the movement and correction obtained by the surgery.
--------------------------------

Marko de Jager

marko@wfw.wtb.tue.nl
currently working (as a PhD-student) on mathematical modelling of the human
cervical spine. The model will have to describe the biodynamic behaviour
of the human neck in impact situations such as occur in car crashes.