Journal of spinal disorders & techniques
-
J Spinal Disord Tech · Aug 2013
Compressive loading of the spine may affect the spinal canal encroachment of burst fractures.
Spinal canal encroachment of burst fractures under different compressive loading. ⋯ An increase in spinal internal loads resulting from a change in the patient posture may increase the SCE of burst fracture. Measurement of the SCE should take into account the bony fragment distribution of burst fracture.
-
J Spinal Disord Tech · Aug 2013
Morphometric measurement of cortical bone trajectory for lumbar pedicle screw insertion using computed tomography.
A morphometric measurement of cortical bone trajectory (CBT) for the lumbar pedicle screw insertion using computed tomography (CT). ⋯ The morphology of the pedicle, such as shape and pedicle axis angle, differed over the lumbar levels, our measurements demonstrated similar data excluding the diameter of the trajectory. There were no significant differences between each level of the lateral and cephalad angles.
-
J Spinal Disord Tech · Jul 2013
Robotic Guidance for S2-Alar-Iliac Screws In Spinal Deformity Correction.
A retrospective cohort study of patients who underwent S2-alar-iliac (S2AI) screw insertion using robotic guidance in long constructs for spinal deformity correction extending to the sacrum performed at a single institution OBJECTIVE:: To assess and evaluate the feasibility and accuracy of robotic guidance for S2AI screw insertion. ⋯ Robotic-guided S2AI screws are accurate and a feasible option. While no complications from protrusion were identified, larger studies and instrumentation modifications are required to assess the clinical acceptance of robotic guidance in sacropelvic fixation.
-
J Spinal Disord Tech · Jul 2013
Comparative StudyUse of autogenous bone graft compared with RhBMP in high-risk patients: a comparison of fusion rates and time to fusion.
A retrospective study. ⋯ With relative low dosage of rhBMP-2 compared with the dose used in Food and Drug Administration trial, in patients without fusion-related risk factors, rhBMP-2 may lead to acceptable fusion rates and faster fusion time when compared with autograft. Therefore, rhBMP-2 may serve as an acceptable alternative to autogenous bone graft in patients without fusion-related risk factors undergoing instrumented posterolateral lumbar fusions. When compared with patients with fusion-related risk factors, the use of rhBMP-2 was comparable with autograft but was not sufficient to overcome all aspects of the weakened osteoinductive capacity encountered in patients with these risk factors.
-
J Spinal Disord Tech · Jul 2013
Randomized Controlled Trial Multicenter StudyFailure of porous tantalum cervical interbody fusion devices: two-year results from a prospective, randomized, multicenter clinical study.
The objective of this study was to assess the safety and efficacy of 2 novel cervical interbody fusion devices in the treatment of single-level degenerative cervical disk disease. Both devices were fabricated from a porous tantalum material. The high overall porosity of the devices was intended to facilitate anterior cervical interbody fusion. ⋯ This study demonstrates that stand-alone porous tantalum material is not ideal for a cervical spine interbody fusion because of the low rate of arthrodesis and the risk of device fragmentation in patients who fail to fuse.