Spine
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A retrospective study. ⋯ 4.
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Multicenter Study
Cost-benefit analysis of routine bone biopsy during augmentation of osteoporotic vertebral compression fractures.
Multi-center prospective study. ⋯ 3.
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Trajectories of Disability and Low Back Pain Impact: 2-year Follow-up of the Groningen Spine Cohort.
Prospective cohort study. ⋯ 2.
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Prospective 2-year study with operative sampling and in-vitro analysis of chromium ions following spinal surgery in children. ⋯ 2.