OBJECTIVE AND IMPORTANCE: Traumatic spondylolisthesis of the axis may be treated by external immobilization or surgical fixation. CLINICAL PRESENTATION: We report the case of a 23-year-old man who sustained an Effendi Type II fracture of the axis, for which halo immobilization did not provide adequate stability. INTERVENTION: The unstable fracture was treated by placing lag screws in the pars interarticularis of C2, which reduced the fracture directly but sacrificed no normal spinal motion. The patient developed a solid fusion, and cervical alignment was normal at his 6-month follow-up examination. CONCLUSION: Although this technique has been reported previously, it is more commonly used in multilevel cervical fusions than for stand-alone repair of C2. Management options, anatomy, and technical considerations for the treatment of traumatic spondylolisthesis are reviewed.
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Bristol et al. (2005) studied this question.
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