Spine
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Randomized Controlled Trial Multicenter Study
The Titanium-coated PEEK Cage Maintains Better Bone Fusion With the Endplate Than the PEEK Cage 6 Months After PLIF Surgery: A Multicenter, Prospective, Randomized Study.
A multicenter, randomized, open-label, parallel-group trial. ⋯ 1.
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Cross-sectional, pre-post patient survey. ⋯ 4.
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Case-control study from a continuous series. ⋯ 3.
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Retrospective cohort study. ⋯ 3.