Spine
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Whole bovine coccygeal discs were cultured under static load, with or without vertebral endplates (VEPs), and assessed for cell viability, biochemical stability, biosynthetic activity, and biosynthetic responsiveness to changes in mechanical load. ⋯ It is possible to maintain cell viability and the biosynthetic responsiveness of large discs for up to 1 week in vitro when the discs are cultured under static load and without VEP.
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Comparative Study
The reliability and construct validity of the Neck Disability Index and patient specific functional scale in patients with cervical radiculopathy.
Cohort study of patients with cervical radiculopathy undergoing physical therapy. ⋯ Our results suggest that the PSFS exhibits superior reliability, construct validity, and responsiveness in this cohort of patients with cervical radiculopathy compared with the NDI. Further research is needed to examine the ability of these measures to accurately reflect changes in individuals, as well as large samples of patients.
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Psychometric testing of translated, culturally adapted questionnaire. ⋯ The EABPS-G is a valid, reliable, and responsive questionnaire for assessing health status and disability influenced by pain in one or more area of the spine and allows intercultural comparisons with the original English version. It could be used for assessment of current state as well as measurement for change.
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Comparative Study
Effects of pelvic asymmetry and low back pain on trunk kinematics during sitting: a comparison with standing.
A prospective study was conducted on a group of patients with unilateral nonspecific low back pain (LBP) and healthy controls. ⋯ This study shows a link between pelvic asymmetry and altered trunk motion in sitting position. We suggest that people with LBP may have a distinct compensatory mechanism, secondary to pelvic asymmetry, which puts the lumbar spine under higher stress. Movement asymmetry, rather than range of motion, may be a better indicator of disturbed function for people with LBP. Structural and functional asymmetries are factors that may be considered in the seating design and work environment.
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The placement of percutaneous posterior cervical screws using three-dimensional fluoroscopic guidance was performed in intact human cadaver specimens. ⋯ This study demonstrates the feasibility of placing percutaneous posterior cervical screws. Three-dimensional fluoroscopy appears to enable highly accurate, percutaneous three-dimensional cervical spine navigation.