ESTUDO ANATÔMICO DIMENSIONAL DO ARCO POSTERIOR DE C2 PARA A INSTRUMENTAÇÃO COM PARAFUSO INTRALAMINAR POSTERIOR INSTRUMENTATION FOR LAMINAR SCREW OF C2: A DIMENSIONAL ANATOMIC STUDY OF AXIS
2009
Introduction:The atlantoaxial joint has stabilizing mechanisms (bones, ligaments and capsules) keeping the anatomic relation between C1-C2. When one or more of those mechanisms fail, in a traumatic or non-traumatic way, an instability atlantoaxial occurs leading to neurologic impairment, pain and cervical mobility limitation. Neurologic impairment and moderate to severe instability may need surgical treatment. Since 1910, a great number of C1-C2 stabilization techniques have been developed, and, even recently, new methods have been developed. New techniques using bilateral screws on C1 lateral mass and C2 laminar screws connected by rods were developed. Objective: To measure C2 lamina size in order to evaluate the safety and the dimension of the screw used
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