Conclusions The ICR in the cervical spine showed a trend of moving progressively more superiorly and anteriorly and the disc space overlapping the distribution circle of ICR increased along the lower motion segments except the C5–6 segment.
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Locating the Instant Center of Rotation in the Subaxial Cervical Spine with Biplanar Fluoroscopy during <i>In Vivo</i> Dynamic Flexion-Extension.
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