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The present study examined the progression, incidence, and risk factors for intervertebral disc degeneration (DD) throughout the lumbar spine using magnetic resonance imaging (MRI) in a large population-based cohort.We followed up 617 subjects for more than 4 years as part of the Wakayama Spine Study. 1) “Progression of DD” in each of the entire, upper (L1/2 to L3/4) and lower (L4/5 and L5/S1) lumbar...
This paper proposes a bed environment where user can actively work in bedridden posture. The proposed bed environment is using a nursing bed as the base, and has an overhead lighting, a screen, and a projector. The environmental conditions, such as bed angle, table angle, and screen distance and angle, and the number of electric bulbs of lightings and its angle, were evaluated by performing questionnaire...
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