Pedicle screw more efficacious vs lateral mass screw fixation in atlantoaxial instability .
A prospective, double-blind, randomized controlled trial of treatment of atlantoaxial instability with C1 posterior arches >4 mm by comparing C1 pedicle with lateral mass screws fixation
BMC Musculoskelet Disord. 2016 Apr 14;17(1):164140 patients with atlantoaxial instability (AAI), with C1 posterior arches greater than 4mm, were randomized to undergo either C1 pedicle or lateral mass screw fixation. The purpose of this study was to compare the feasibility and clinical outcomes of the two treatments of AAI after a mean follow-up period of 24.5 months. Findings indicated that C1 pedicle screw fixation may be less invasive and yield fewer complications compared to C1 lateral mass screw fixation.
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