In vitro coupled motions of the whole human thoracic and lumbar spine with rib cage
Abstract Study design In vitro biomechanical study investigating the coupled motions of the whole normative human thoracic spine (TS) and lumbar spine (LS) with rib cage. Objective To quantify the region‐specific coupled motion patterns and magnitudes of the TS, thoracolumbar junction (TLJ), and LS...
Saved in:
Published in | JOR-spine Vol. 6; no. 3; p. e1257 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Hoboken
John Wiley & Sons, Inc
01.09.2023
Wiley |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Abstract
Study design
In vitro biomechanical study investigating the coupled motions of the whole normative human thoracic spine (TS) and lumbar spine (LS) with rib cage.
Objective
To quantify the region‐specific coupled motion patterns and magnitudes of the TS, thoracolumbar junction (TLJ), and LS simultaneously.
Background
Studying spinal coupled motions is important in understanding the development of complex spinal deformities and providing data for validating computational models. However, coupled motion patterns reported in vitro are controversial, and no quantitative data on region‐specific coupled motions of the whole human TS and LS are available.
Methods
Pure, unconstrained bending moments of 8 Nm were applied to seven fresh‐frozen human cadaveric TS and LS specimens (mean age: 70.3 ± 11.3 years) with rib cages to elicit flexion‐extension (FE), lateral bending (LB), and axial rotation (AR). During each primary motion, region‐specific rotational range of motion (ROM) data were captured.
Results
No statistically significant, consistent coupled motion patterns were observed during primary FE. During primary LB, there was significant (
p
< 0.05) ipsilateral AR in the TS and a general pattern of contralateral coupled AR in the TLJ and LS. There was also a tendency for the TS to extend and the LS to flex. During primary AR, significant coupled LB was ipsilateral in the TS and contralateral in both the TLJ and LS. Significant coupled flexion in the LS was also observed. Coupled LB and AR ROMs were not significantly different between the TS and LS or from one another.
Conclusions
The findings support evidence of consistent coupled motion patterns of the TS and LS during LB and AR. These novel data may serve as reference for computational model validations and future in vitro studies investigating spinal deformities and implants. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2572-1143 2572-1143 |
DOI: | 10.1002/jsp2.1257 |