Spine
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Experimental animal study. ⋯ N/A.
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Comparative Study
Biomechanical evaluation of S2 alar-iliac screws: effect of length and quad-cortical purchase as compared with iliac fixation.
A biomechanical study conducted on cadaveric specimens. ⋯ N/A.
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Prospective cohort study. ⋯ 3.