Abstract
We present a numerical approach to reproduce various patterns of spino-pelvic organization. We wanted to predict the spinal loads in two static conditions (standing and holding a weight in the hands) based on parameters describing the shape of the lumbar spine: type following Roussouly classification, sacral slope, apex, inflection point and lumbar lordosis. Four hundred eighty finite element models including trunk muscles and representing the entire range of normal variability were created. The models predicted that, in the case of a moderate external load of 50 N, a lordotic and well balanced spine (e.g., type 3) could reduce the muscle activation in comparison with a more lordotic (type 4) spine, with negligible differences compared to a more straight spine (type 2). However, such a sagittal configuration was not correlated with a minimization of the loading state in the intervertebral discs, especially regarding anteroposterior shear loads. In the standing posture without any additional load, a less lordotic and more vertical spine (e.g., types 1 and 2) was sufficient to ensure a condition of minimal spinal loads. Despite a number of limitations, inverse statics numerical models of spine biomechanics including trunk muscles appear to be a promising tool to fill the knowledge gap between the clinical observations of the correlations between the spino-pelvic organization and the consequent spinal disorders.
| Original language | English |
|---|---|
| Pages (from-to) | 537-544 |
| Number of pages | 8 |
| Journal | Journal of Orthopaedic Research |
| Volume | 32 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2014 |
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Keywords
- finite element
- sagittal balance
- spinal loads
- spino-pelvic parameters
- trunk muscles
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
Cite this
Numerical evaluation of the correlation between the normal variation in the sagittal alignment of the lumbar spine and the spinal loads. / Galbusera, Fabio; Brayda-Bruno, Marco; Costa, Francesco; Wilke, Hans Joachim.
In: Journal of Orthopaedic Research, Vol. 32, No. 4, 04.2014, p. 537-544.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Numerical evaluation of the correlation between the normal variation in the sagittal alignment of the lumbar spine and the spinal loads
AU - Galbusera, Fabio
AU - Brayda-Bruno, Marco
AU - Costa, Francesco
AU - Wilke, Hans Joachim
PY - 2014/4
Y1 - 2014/4
N2 - We present a numerical approach to reproduce various patterns of spino-pelvic organization. We wanted to predict the spinal loads in two static conditions (standing and holding a weight in the hands) based on parameters describing the shape of the lumbar spine: type following Roussouly classification, sacral slope, apex, inflection point and lumbar lordosis. Four hundred eighty finite element models including trunk muscles and representing the entire range of normal variability were created. The models predicted that, in the case of a moderate external load of 50 N, a lordotic and well balanced spine (e.g., type 3) could reduce the muscle activation in comparison with a more lordotic (type 4) spine, with negligible differences compared to a more straight spine (type 2). However, such a sagittal configuration was not correlated with a minimization of the loading state in the intervertebral discs, especially regarding anteroposterior shear loads. In the standing posture without any additional load, a less lordotic and more vertical spine (e.g., types 1 and 2) was sufficient to ensure a condition of minimal spinal loads. Despite a number of limitations, inverse statics numerical models of spine biomechanics including trunk muscles appear to be a promising tool to fill the knowledge gap between the clinical observations of the correlations between the spino-pelvic organization and the consequent spinal disorders.
AB - We present a numerical approach to reproduce various patterns of spino-pelvic organization. We wanted to predict the spinal loads in two static conditions (standing and holding a weight in the hands) based on parameters describing the shape of the lumbar spine: type following Roussouly classification, sacral slope, apex, inflection point and lumbar lordosis. Four hundred eighty finite element models including trunk muscles and representing the entire range of normal variability were created. The models predicted that, in the case of a moderate external load of 50 N, a lordotic and well balanced spine (e.g., type 3) could reduce the muscle activation in comparison with a more lordotic (type 4) spine, with negligible differences compared to a more straight spine (type 2). However, such a sagittal configuration was not correlated with a minimization of the loading state in the intervertebral discs, especially regarding anteroposterior shear loads. In the standing posture without any additional load, a less lordotic and more vertical spine (e.g., types 1 and 2) was sufficient to ensure a condition of minimal spinal loads. Despite a number of limitations, inverse statics numerical models of spine biomechanics including trunk muscles appear to be a promising tool to fill the knowledge gap between the clinical observations of the correlations between the spino-pelvic organization and the consequent spinal disorders.
KW - finite element
KW - sagittal balance
KW - spinal loads
KW - spino-pelvic parameters
KW - trunk muscles
UR - http://www.scopus.com/inward/record.url?scp=84893846772&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893846772&partnerID=8YFLogxK
U2 - 10.1002/jor.22569
DO - 10.1002/jor.22569
M3 - Article
C2 - 24375659
AN - SCOPUS:84893846772
VL - 32
SP - 537
EP - 544
JO - Journal of Orthopaedic Research
JF - Journal of Orthopaedic Research
SN - 0736-0266
IS - 4
ER -