Spine
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Comparative Study
Utility of Flexion-Extension Radiographs in Lumbar Spondylolisthesis: A Prospective Study.
Prospective cohort study in consecutive patients. ⋯ 2.
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Laboratory study. ⋯ 4.
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A retrospective study. ⋯ 3.
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A retrospective minimum 20-year follow-up study using 4 standard self-administered questionnaires, one of which, the SRS-22 was also administered to control groups. ⋯ 4.
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Cross-sectional study. ⋯ 3.