Spine
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Randomized Controlled Trial Multicenter Study
Prospective, multicenter, randomized, controlled study of anular repair in lumbar discectomy: two-year follow-up.
Prospective, multicenter, single-blind, randomized, controlled clinical study. ⋯ 1.
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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.
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A biomechanical human cadaveric study. ⋯ Destabilization of both the facet complex and disc was required to achieve anterior listhesis of 3.1 mm consistent with a grade 1 DLS under an applied shear force of 250 N. Sufficient listhesis was measured without radical specimen resection. Important anatomical structures for supporting spinal instrumentation were preserved such that this model can be used in future to characterize behavior of novel instrumentation prior to clinical trials.