Journal of spinal disorders & techniques
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J Spinal Disord Tech · Jun 2015
X-Ray-based Kinematic Analysis of Cervical Spine According to Prosthesis Designs: Analysis of the Mobi C, Bryan, PCM, and Prestige LP.
A retrospective study. ⋯ These results suggest preservation of sagittal ROM and increased superior adjacent segment kinematics, regardless of prosthesis design. Devices with an unconstrained design may not be beneficial to adjacent segment kinematics compared with semiconstrained prostheses.
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J Spinal Disord Tech · Jun 2015
Prevalence of venous thromboembolic events after elective major thoracolumbar degenerative spine surgery.
A case-control study. ⋯ This case-control study of 5766 patients who underwent elective thoracolumbar degenerative spine surgery revealed a prevalence of VTE of 1.5%, with a prevalence of PE of 0.88% and DVT of 0.66%. Patients with increasingly extensive surgery had a higher risk of PE, specifically those undergoing fusion of ≥5 segments.
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J Spinal Disord Tech · Jun 2015
One-Stage Correction Surgery of Scoliosis Associated With Syringomyelia: Is it Safe to Leave Untreated a Syrinx Without Neurological Symptom?
Retrospective study. ⋯ For scoliosis patients associated with syringomyelia without neurological deficits, it might be safe and could be an option to leave a syrinx untreated before 1-stage correction surgery. Besides, a residual scoliosis was important to make sure the neural safety. The correction procedure during the surgery should be controlled by about 15 degrees or 50% more than on the bending film. Not placing the pedicle screw in the apical region was beneficial for controlling the correction rate.
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J Spinal Disord Tech · Jun 2015
Morphologic Changes in Contralateral Lumbar Foramen in Unilateral Cantilever Transforaminal Lumbar Interbody Fusion Using Kidney-type Intervertebral Spacers.
A retrospective study of 58 patients undergoing cantilever transforaminal lumbar interbody fusion (c-TLIF). ⋯ Lumbar foraminal dimensions on the side contralateral to spacer insertion increased significantly after c-TLIF, suggesting that c-TLIF enables indirect decompression of the contralateral nerve root. Although increase in posterior disk height was shown to be an important factor to increase contralateral foraminal size, segmental lordosis was a risk factor for a decrease in contralateral foraminal size.
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J Spinal Disord Tech · Jun 2015
Factors associated with intramedullary MRI abnormalities in patients with ossification of the posterior longitudinal ligament.
A retrospective clinical study of 113 patients with ossification of the posterior longitudinal ligament (OPLL), who underwent either anterior or posterior surgery between 2006 and 2009. ⋯ As intramedullary spinal cord changes in signal intensity on MRI indicated severe damage to spinal cord and poor prognosis as we described before, early surgery is suggested for patients with OPLL who manifest one of the following factors: prolonged symptoms, high occupying ratio, low preoperative JOA score, kyphosis, or instability of the cervical spine. These factors are closely related to the intramedullary spinal cord changes in signal intensity on MRI.