Spine
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Review Multicenter Study Clinical Trial
Effect of type II odontoid fracture nonunion on outcome among elderly patients treated without surgery: based on the AOSpine North America geriatric odontoid fracture study.
Subgroup analysis of a prospective multicenter study. ⋯ 2.
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Multicenter Study Clinical Trial
Anterior versus posterior surgical approaches to treat cervical spondylotic myelopathy: outcomes of the prospective multicenter AOSpine North America CSM study in 264 patients.
A prospective observational multicenter study. ⋯ 3.
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Two-year, prospective cohort data collected for the Japan epidemiological research of Occupation-related Back pain study were used for the analysis. ⋯ 3.