Journal of spinal disorders & techniques
-
J Spinal Disord Tech · May 2014
Analysis of sagittal balance of ankylosing spondylitis using spinopelvic parameters.
Prospective study. ⋯ AS patients and normal controls were found to be significantly different in terms of sagittal spinopelvic parameters. Significant relationships were found between sagittal spinopelvic parameters in AS patients. Pelvic tilt was a significant parameter in determination of sagittal balance in AS patient. Furthermore, VAS scores were significantly related to sagittal spinal parameters which were closely related with pelvic orientation in AS patients.
-
J Spinal Disord Tech · May 2014
Surgical treatment of scoliosis in osteogenesis imperfecta with cement-augmented pedicle screw instrumentation.
A retrospective study. ⋯ Pedicle screw instrumentation in OI scoliosis is safe and effective. Cement augmentation in these patients may help to increase the pedicle pull-out strength and decrease the screw failure rates, especially at the proximal and the distal ends of instrumentation.
-
J Spinal Disord Tech · May 2014
Analysis of cervical pedicle with reconstructed computed tomography imaging in Korean population: feasibility and surgical anatomy.
We analyzed the anatomy of C3-C6 cervical pedicles with reconstructed computed tomography images. ⋯ Because of a tight safe margin, to reduce pedicle penetration the screw should be inserted along the pedicle. With regard to SA, C3 and C4 have a risk of upper end plate penetration. However, C5 and C6 have a risk of facet joint violation, which needs C4 and C5 inferior articular process removal for screw placement. The entry point at C3 and C4 is near one third of the lateral mass height from the posterior border of the superior articular process at the posterolateral border of the lateral mass. The entry point at C5 is near the posterolateral border of the superior articular process and that at C6 is superior to the posterior border of the superior articular process at a line medial to the posterolateral border of the C5 lateral mass. During insertion, not only CA but even SA should be considered carefully to reduce pedicle penetration.
-
J Spinal Disord Tech · Apr 2014
Cervical laminectomy width and spinal cord drift are risk factors for postoperative C5 palsy.
Cervical laminectomy and fusion (CLF) is a treatment option for multilevel cervical spondylotic myelopathy. Postoperative C5 nerve palsy is a possible complication of CLF. It has been suggested that C5 nerve palsy may be due to posterior drift of the spinal cord related to a wide laminectomy trough. ⋯ A wider laminectomy at C5 was associated with an increased risk of postoperative C5 palsy. Increased preoperative spinal canal diameter is also associated with increased risk of C5 palsy. In addition, patients who experienced C5 nerve palsy had a significantly greater posterior spinal cord drift. Strategies to reduce postoperative laminectomy trough width and spinal cord drift may reduce the risk of postoperative C5 palsy.