Modelling and Analysis of Vertebral Coloumn With Bone

8/3/2019 Modelling and Analysis of Vertebral Coloumn With Bone

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MODELING AND FINITE ELEMENTANALYSIS OF VERTEBRAL COLUMN

FOR BONE GRAFT FUSION

By: SIDDHARTH KASHYAP PROJECTGUIDE: Dr P.M PADOLE

MT10CDM002


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1. INTRODUCTION

2. LITERATURE SURVEY

3. OBJECTIVE OF THE PROJECT WORK

4. METHODOLOGY

5. REFERENCES


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Biomechanical Engineering in medical field

Surgery and operations of skull, knee, bones,

hip joint and vertebral column.

Engineering and computational mechanicshave been useful in understanding function of

bones joints and muscles.

Designing artificial organs and implants.


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Human Vertebral Column:


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Intervertebral Disc Degeneration (IVD).

Most of the cases it is natural process and agerelated.

Back pain an indication.

Most common site is lower back region duringspine injuries.

Degeneration reduces the shock absorbingand load bearing capacity.


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Arthrodesis (Fusion Method):

2D REPRESENTATIONX-RAY SHOWING

FUSED VERTEBRA

Pedicle Instrumentation

Spacer


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Arthroplasty (artificial disc insertion):

ARTIFICIAL DISC

BEFORE INSERTION AFTER INSERTION


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1. Acute, sub acute and chronic low back pain:clinical symptoms, absenteeism and workingenvironment.

(Vallfors, B.;Scandinavian Journal of RehabilitationMedicine 11, 1-98,1985.)

In this paper the author mentions about disc

degeneration as most frequently observed skeletaldisease responsible for lower back pain.


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2. Biomechanical comparison between fusion oftwo vertebrae and implantation of an artificial

intervertebral disc.(Guilhem Denoziere, David N. Ku, 2004; Journal ofBiomechanics vol 39 (2006), 766775.)

The objective of this study was to compare, undersevere loading conditions, the biomechanics of thelumbar spine treated either by fusion or total disc

replacement (TDR).


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3. Use of bone as an interbody fusion device.(Rasmussen, P.A Trost , G.R and Tribus, C; Technical

Neurosurgery 7, (2), 110-18, 2001.)

It specifies major limitations of the process ofarthrodesis i.e. the fusion technique.

4. Finite element modeling of the cervical spine:role of intervertebral disc under axial and

eccentric loads(Srirangam Kumaresan, Narayan Yoganandan,Frank A. Pintar, Dennis J. Maiman; MedicalEngineering & Physics vol 21 (1999) 689700)


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A three-dimensional, nonlinear finite elementmodel of the human cervical spine was developed

using computed tomography images and wasvalidated with experimental results related toforce-displacement and strain response of model

5. Integration of medical imaging Technique andfinite element method for lumbar spine fusionprocess.

(Ashish B. Deoghare; 2010, Ph.D. Thesis)The thesis studies the bone Graft fusion process ina case of IVD. 3D model generated has beenstudied with a particular design of cages and

spacer.


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From the literature survey done it was identifiedthat there is scope in analyzing Bone Graft methodin more detail with respect to finite element

analysis. Prime objectives of the project are:-

To analyze the effects of different shapes andsizes of cage implants like round, oblong, oval etc.

Effects of changes in the spacer and pedicleinstrumentation profile for differentbiocompatible materials.


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Study in detail the biomechanics of spine fromthe Ph.D. thesis and other literature.

Identify different loadings on vertebra which

will be taken into account.

Obtain CT-Scan of a specific patient which willbe converted to 3D model.

Use ANSYS software for finite element analysis(FEA) of the generated 3D model.


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1. Guilhem Denoziere, David N. Ku, 2004:Biomechanical comparison between fusion of twovertebrae and implantation of an artificialintervertebral disc; Journal of Biomechanics vol 39(2006) 766775.

2. Qi-Bin Bao, Geoffrey M. McCullen, Paul A. Higham,John H. Dumbleton and Hansen A Yuan, 1995; Theartificial disc: theory, design and Materials;Biomaterials vol 17 (1996) 1157-1167.

3. Fabio Galbusera, Chiara M. Bellini, Manuela T.Raimondi, Maurizio Fornari, Roberto Assietti; 2008;Cervical spine biomechanics following implantation ofdisc prosthesis; Medical Engineering & Physics vol 30(2008) 11271133.


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4. Aaron J. Fields, Gideon L. Lee, Tony M. Keaveny; 2010;Mechanisms of initial endplate failure in the humanvertebral body; Journal of Biomechanics vol 43 (2010)

31263131.

5. Srirangam Kumaresan, Narayan Yoganandan, Frank A.Pintar, Dennis J. Maiman; 1999; Finite elementmodelling of the cervical spine: role of intervertebraldisc under axial and eccentric loads; Medical

Engineering & Physics vol 21 (1999) 689700.

6. D. S. McNally and R.G.C. Arridge; 1994;An analyticalmodel of intervertebral disc mechanics; Journal ofBiomechanics, Vol. 28, No.1, pp. 53-68, 1995.

7. Ashish B. Deoghare; 2010; Integration of medicalimaging Technique and finite element method forlumbar spine fusion process; Ph.D. Thesis


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Modelling and Analysis of Vertebral Coloumn With Bone

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