Journal of spinal disorders & techniques
-
J Spinal Disord Tech · Jul 2008
The clinical characteristics and risk factors for the adjacent segment degeneration in instrumented lumbar fusion.
A retrospective study. ⋯ Radiographic ASD is relatively common long-term finding associated with instrumented lumbar fusion. However, radiographic evidence of ASD does not necessarily correlate with a poor outcome. Our results suggest that advanced age, anterior lumbar interbody fusion, and the restoration of the preoperative standing lumbar lordosis may have a protective effect against the development of ASD.
-
J Spinal Disord Tech · Jul 2008
Transvertebral Transsacral strut grafting for high-grade isthmic spondylolisthesis L5-S1 with fibular allograft.
A clinical retrospective study was conducted. ⋯ Treatment by this method showed improvement in lumbosacral kyphosis while avoiding the neurologic injury risk associated with open slip-reduction maneuvers. Despite no reduction in translational deformity, this technique offers excellent fusion results, good clinical outcomes, and prevents further sagittal translation and lumbosacral kyphosis progression.
-
J Spinal Disord Tech · Jul 2008
Residual motion on flexion-extension radiographs after simulated lumbar arthrodesis in human cadavers.
Flexion-extension radiographs are commonly used to assess lumbar fusion. Recommended criteria for solid fusion have varied from 1 to 5 degrees of angular motion between vertebrae. Notwithstanding this wide variation, the validity of these criteria have never been biomechanically tested. ⋯ The amount of radiographically detectable flexion-extension motion with simulated fusions varies widely and seems to be influenced by fusion type. This study documents a range of measurable motion on flexion-extension radiographs after several types of simulated lumbar fusion. However, as the degrees of motion seemed to be high, future studies should use a fusion simulation other than metallic implants that more closely resembles bony arthrodesis.
-
J Spinal Disord Tech · Jul 2008
Clinical results of intrapedicular partial pediculectomy for lumbar foraminal stenosis.
A retrospective case study of the use of intrapedicular partial pediculectomy (IPPP) to treat lumbar foraminal stenosis. ⋯ This follow-up study confirms that IPPP affords long-lasting improvements in leg symptoms for patients with lumbar foraminal stenosis.