Spine
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Retrospective case series. ⋯ 3.
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Randomized Controlled Trial Multicenter Study Observational Study
Does opioid pain medication use affect the outcome of patients with lumbar disc herniation?
Subgroup analysis of prospective, randomized cohort. ⋯ 2.
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Systematic review of interventions. ⋯ 2.
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Comparative Study
A comparison of patients who have undergone 1-Level versus 2-Level ProDisc arthroplasty: a prospective study with minimum of 5-year follow-up.
Analysis of data collected prospectively from the United States Food and Drug Administration Investigational Device Exemption (U.S. FDA IDE) clinical trial for patients who underwent ProDisc-L arthroplasty at 1- and 2- levels performed at 2 study centers. ⋯ 4.
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A retrospective cohort design. ⋯ 2.