Spine
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A cost-utility analysis within a randomized controlled trial was conducted from the health care perspective. ⋯ 2.
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Observational cross-sectional survey. ⋯ 3.
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Single-institution, retrospective case series. ⋯ 4.
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Comparative Study
A CT-Based Simulation Study to Compare the Risk of Facet Joint Violation by the Cervical Pedicle Screw Between Degenerative and Nondegenerative Cervical Spines.
A retrospective case-control study. ⋯ 4.