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ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

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The column diagramm of Fig.8 shows the intradiscal pressure calculated with the MBSmodel<br />

compared to results from Finite Element - modeling [3] and in vivo measurements<br />

[4], [5], [6]. Obviously the results are in the same order of magnitude.<br />

Pressure [MPa]<br />

0,7<br />

0,6<br />

0,5<br />

0,4<br />

0,3<br />

0,2<br />

0,1<br />

Fig.8 Intradiscal pressure. Comparison of the simulation results with FE modeling and<br />

the results of in vivo experiments<br />

6. REFERENCES<br />

0<br />

Sac-L5 L5-L4 L4-L3 L3-L2 L2-L1<br />

MBS model Rohlmann [3] Wilke [4]<br />

Sato [5] Andersson [6]<br />

1. Schmoelz, W., Erhart S., Unger S., Disch A.C., Biomechanical evaluation of a<br />

posterior non-fusion instrumentation of the lumbar spine, European Spine Journal,<br />

published online: 20 December 2011<br />

2. Panjabi, M. and White A., Clinical biomechanics of the spine. Philadelphia: JB<br />

Lippincott Company, 1990, 24.<br />

3. Rohlmann, A., Zander T., Rao M. and Bergmann, G., Applying a follower load<br />

delivers realistic results for simulating standing, Journal of Biomechanics, 2009,<br />

Vol. 42, 1520-1526.<br />

4. Wilke, H.-J., Neef P., Caimi M., Hoogland T. and Claes L.E., New In Vivo<br />

measurement of pressure in the intervertebral disc in daily life. Spine, 1999, Vol. 24,<br />

755-762.<br />

5. Sato, K., Kikuchi S. and Yonezawa T., In Vivo intradiscal pressure measurement in<br />

healthy individuals and in patients with ongoing back problems, Spine, 1999, Vol.<br />

24, 2468-2474.<br />

6. Andersson, G.B., Ortengren, R., Nachemson, A., Intradiskal pressure, intraabdominal<br />

pressure and myoelectric back muscle activity related to posture and<br />

loading. Clinical Orthopaedics and Related Research 1977,Vol. 129, 156-164.

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