An in vivo study of the primary and coupled rotations of the thoracic spine

Willems, J. M., Jull, G. A. and Ng, J. K. F. (1996) An in vivo study of the primary and coupled rotations of the thoracic spine. Clinical Biomechanics, 11 6: 311-316. doi:10.1016/0268-0033(96)00017-4

Author Willems, J. M.
Jull, G. A.
Ng, J. K. F.
Title An in vivo study of the primary and coupled rotations of the thoracic spine
Formatted title
An in vivo study of the primary and coupled rotations of the thoracic spine
Journal name Clinical Biomechanics   Check publisher's open access policy
ISSN 0268-0033
Publication date 1996-09
Sub-type Article (original research)
DOI 10.1016/0268-0033(96)00017-4
Volume 11
Issue 6
Start page 311
End page 316
Total pages 6
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted abstract
Objective. To provide preliminary data on three-dimensional thoracicspine kinematics measured in vivo.
Design. This study measured the three planes of thoracicspine motion in normal subjects using an external measuring device.
Background. Few studies have investigated the primary and associated coupledrotations in the thoracicspinein vivo. Most knowledge of motion characteristics comes from in vitrostudies which have limitations. There is a lack of agreement on the patterns of thoraciccoupled motion especially that between lateral flexion and axial rotation.
Methods. Thoracic motion was examined in 60 normal subjects (30 males, 30 females) aged 18–24 years. The primary and coupledrotations of the thoracic regions T1–4, T4–8, T8–12 were measured using a 3 space Fastrak system.
Results. The three thoracic regions displayed the characteristic variations in range and distribution of primaryrotations previously described. The pattern of coupled motion varied between subjects but an ipsilateral pattern predominated between lateral flexion and axial rotation in the middle and lower thoracic regions while the upper thoracic region was found to exhibit either a contralateral or ipsilateral pattern. Gender did not influence results.
Conclusions. The pattern of coupled motion in the thoracicspine demonstrated some variability between subjects in vivo. Lateral flexion and axial rotation were strongly coupled with overall, their relationship being predominantly ipsilateral.
Keyword Thoracic spine
Coupled motion
External measurement
In vivo measurement
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Health and Rehabilitation Sciences Publications
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Created: Fri, 04 Feb 2011, 14:55:47 EST