Archives of physical medicine and rehabilitation
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Arch Phys Med Rehabil · Nov 1997
Head and shoulder posture variations in 160 asymptomatic women and men.
To quantitatively describe the postural alignment of the head and shoulders and the surface curvature of the thoracic spine in comfortable erect standing and to examine the effect of age and gender on head and shoulder alignment. ⋯ Head and shoulder posture was similar between genders. Only one postural description that has been described anecdotally was identified, i.e., that age was related to the position of the head with respect to the trunk in the sagittal plane, although the strength of the association was of questionable clinical significance. In contrast, other longstanding assumptions were not supported, and accordingly, a forward head was not associated with increased thoracic curvature or upper cervical spine extension.
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Arch Phys Med Rehabil · Nov 1997
Clinical Trial Controlled Clinical TrialFacet tropism in lumbar motion segments and its significance in disc herniation.
To define facet tropism (FT) for each motion segment of the lower lumbar spine for subjects without disc herniation, and to evaluate the significance of facet tropism in disc herniation. ⋯ This study did not show that facet joint tropism plays a significant role in disc herniation in the lower lumbar spine.