Spine
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Observational Study
Characteristics of trunk control during crook-lying unilateral leg raising in different types of chronic low back pain patients.
Cross-sectional observational study. ⋯ N/A.
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A retrospective study. ⋯ 3.
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A 3-dimensional finite element investigation. ⋯ 5.
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An in vivo dosing study of vitamin D in a rat posterolateral spinal fusion model with autogenous bone grafting. Rats randomized to 4 levels of vitamin D-adjusted rat chow, longitudinal serum validation, surgeons/observers blinded to dietary conditions, and rats followed prospectively for fusion endpoint. ⋯ N/A.