Spine
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Randomized Controlled Trial Comparative Study
Adjacent Disc Degeneration After Lumbar Total Disc Replacement or Non-operative Treatment: A Randomized Study With Eight-year Follow-up.
A randomized controlled multicenter trial with 8-year follow-up. ⋯ 1.
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Randomized Controlled Trial Multicenter Study Comparative Study Observational Study
Long-Term Results of Surgery Compared with Nonoperative Treatment for Lumbar Degenerative Spondylolisthesis in the Spine Patient Outcomes Research Trial (SPORT).
Randomized trial with a concurrent observational cohort study. ⋯ 1.