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Figure 4.

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Case 3: A five-year-old boy. (a, b) Preoperative flexion and extension lateral cervical X rays showing C1/2 instability with clear pseudoarthosis and posterior C2/3 fusion, (c) preoperative sagittal CT scan showing anterior subluxation of C1, (d) postoperative X ray showing reduction of C1 with fixation of C1/2–3 with sublaminar cerclage wire.

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