Combined traumatic occiput-C1 and C1-C2 dissociation: 2 case reports.
2010
Occiput-C1 and C1-C2 dissociations and dislocations have been well documented in the literature. However, after thorough review of the literature, we found very little in the literature regarding combined occiput-C1 and C1-C2 dissociations in adults who survived. We present 2 case reports describing the clinical presentation, initial management, operative treatment, and postoperative course of 2 patients who sustained traumatic combined occiput-C1 and C1-C2 dissociations. After initial stabilization, both patients underwent open reduction and posterior occipital-cervical fusion with segmental fixation. At recent follow-up, both patients maintain good sagittal alignment without loss of reduction, and they have radiographic progression to fusion, minimal pain, and improved neurologic function. Combined occiput-C1 and C1-C2 dissociations are rare but serious injuries. Incomplete dissociations may not be evident on initial radiographs. Computed tomography or magnetic resonance imaging is recommended for formal diagnosis. A traumatic dural tear may be present. We recommend open reduction and posterior occipital-cervical fusion with segmental fixation for these patients.
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