Document Detail


A radiographic analysis of the influence of initial neck posture on cervical segmental movement at end-range extension in asymptomatic subjects.
MedLine Citation:
PMID:  20708429     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
In the management of neck pain disorders, McKenzie recommends performing neck extension exercises from a fully neck retracted position in order to achieve a maximum range of lower cervical extension. However, no study has investigated the impact of pre-positioning the neck prior to the extension exercise. This study compared end-range sagittal cervical segmental rotation and translation from three starting positions: the neck in neutral (Ex), retraction (Ret-Ex) and protraction (Pro-Ex). Twenty asymptomatic healthy volunteers were recruited. Lateral radiographs were taken in neutral and at each of the three end-range extension positions and differences in sagittal rotation angles and translation from the neck neutral posture were calculated at each segment. The results indicated that there was a significant difference in the pattern of the sagittal segmental rotation (P < 0.001) but no difference in summed rotations (total extension) between the three conditions (P > 0.05). Pro-Ex generated significantly (P < 0.05) greater extension range at C1-2 and Ret-Ex produced significantly (P < 0.05) greater extension range at C6-7 than alternate conditions. In contrast, there was no significant difference in segmental translation values between the three conditions (P > 0.05). These results indicate initial neck positions can influence cervical segmental extension range at C1-2 and C6-7.
Authors:
Hiroshi Takasaki; Toby Hall; Shouta Kaneko; Yoshikazu Ikemoto; Gwendolen Jull
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Publication Detail:
Type:  Journal Article     Date:  2010-08-12
Journal Detail:
Title:  Manual therapy     Volume:  16     ISSN:  1532-2769     ISO Abbreviation:  Man Ther     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2010-12-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9610924     Medline TA:  Man Ther     Country:  Scotland    
Other Details:
Languages:  eng     Pagination:  74-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Affiliation:
Division of Physiotherapy, School of Health and Rehabilitation Science, The University of Queensland, Brisbane, Queensland 4072, Australia. hiroshi.takasaki@uqconnect.edu.au
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