Clinical spine surgery
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Clinical spine surgery · Jun 2016
A Retrospective Analysis of Subaxial Subluxation Following Atlanto-axial Arthrodesis in Patients with Rheumatoid Arthritis Based on Annual Radiographs Obtained for Five Years.
Retrospective study. ⋯ Although SAA was maintained following atlanto-axial arthrodesis in RA-AAS patients, 12 of 25 patients (48%) with AAS developed SAS following atlanto-axial fusion. Further surgery was not needed for SAS up to five years after the initial surgery. We did not find any relationships between the occurrence of SAS and the AAA and SAA before and after surgery. Therefore, our findings suggest that proper reduction of AAA in patients with atlanto-axial arthrodesis does not affect the occurrence of SAS at five years after surgery.
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Clinical spine surgery · Jun 2016
Relation Between Severity of Injury and Neurological Deficit in Thoracolumbar Burst Fracture.
A prospective, consecutive case series. ⋯ NISS have a closer correlation with neurological deficit in thoracolumbar burst fractures; thus, we can put forward a hypothesis that perhaps NISS is able to reflect the dynamic fracture process.
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Clinical spine surgery · May 2016
A New Navigational Tool for Pedicle Screw Placement in Patients with Severe Scoliosis: A Pilot Study to Prove Feasibility, Accuracy, and Identify Operative Challenges.
Pilot study. ⋯ The new custom-made positioning guide is a feasible navigational tool which permits a safe and accurate implantation of pedicle screws in patients with severe scoliosis.
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Clinical spine surgery · May 2016
The Compensatory Relationship of Upper and Subaxial Cervical Motion in the Presence of Cervical Spondylosis.
This study was an in vivo kinematic magnetic resonance imaging analysis of cervical spinal motion in human subjects. ⋯ Our study demonstrates that decreased subaxial cervical spinal motion is associated with intervertebral disk degeneration in a symptomatic population. This decrease in mobility at the subaxial cervical spine is compensated for by an increase in angular mobility of the upper cervical spine at the occipital-atlantoaxial complex, especially at Oc-C1.