Spine
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We prospectively evaluated adjacent disc levels after anterior cervical discectomy and arthroplasty (ACDA) using kinematic magnetic resonance imaging (MRI) and plain functional radiographs. ⋯ 3.
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Prospective cohort. ⋯ 3.
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Retrospective review of prospectively collected data. ⋯ 4.
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A cross-sectional study. ⋯ 2.