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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-09-01
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| Series: | JOR Spine |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/jsp2.1257 |
| _version_ | 1797670699290066944 |
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| author | Mattan R. Orbach Jonathan Mahoney Brandon S. Bucklen Sriram Balasubramanian |
| author_facet | Mattan R. Orbach Jonathan Mahoney Brandon S. Bucklen Sriram Balasubramanian |
| author_sort | Mattan R. Orbach |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-11T21:04:20Z |
| format | Article |
| id | doaj.art-1e8277ee1bb9485d9f4142c7243deb58 |
| institution | Directory Open Access Journal |
| issn | 2572-1143 |
| language | English |
| last_indexed | 2024-03-11T21:04:20Z |
| publishDate | 2023-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | JOR Spine |
| spelling | doaj.art-1e8277ee1bb9485d9f4142c7243deb582023-09-29T14:33:35ZengWileyJOR Spine2572-11432023-09-0163n/an/a10.1002/jsp2.1257In vitro coupled motions of the whole human thoracic and lumbar spine with rib cageMattan R. Orbach0Jonathan Mahoney1Brandon S. Bucklen2Sriram Balasubramanian3School of Biomedical Engineering, Science and Health Systems Drexel University Philadelphia Pennsylvania USAMusculoskeletal Education and Research Center A Division of Globus Medical, Inc Audubon Pennsylvania USAMusculoskeletal Education and Research Center A Division of Globus Medical, Inc Audubon Pennsylvania USASchool of Biomedical Engineering, Science and Health Systems Drexel University Philadelphia Pennsylvania USAAbstract 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.https://doi.org/10.1002/jsp2.1257axial rotationbiomechanicscoupled motionextensionflexionin vitro |
| spellingShingle | Mattan R. Orbach Jonathan Mahoney Brandon S. Bucklen Sriram Balasubramanian In vitro coupled motions of the whole human thoracic and lumbar spine with rib cage JOR Spine axial rotation biomechanics coupled motion extension flexion in vitro |
| title | In vitro coupled motions of the whole human thoracic and lumbar spine with rib cage |
| title_full | In vitro coupled motions of the whole human thoracic and lumbar spine with rib cage |
| title_fullStr | In vitro coupled motions of the whole human thoracic and lumbar spine with rib cage |
| title_full_unstemmed | In vitro coupled motions of the whole human thoracic and lumbar spine with rib cage |
| title_short | In vitro coupled motions of the whole human thoracic and lumbar spine with rib cage |
| title_sort | in vitro coupled motions of the whole human thoracic and lumbar spine with rib cage |
| topic | axial rotation biomechanics coupled motion extension flexion in vitro |
| url | https://doi.org/10.1002/jsp2.1257 |
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