What is L5-S1 Listhesis?
What is Spondylolisthesis? Spondylolisthesis occurs when one of the lumbar vertebrae in the spine moves forward relative to the vertebrae below it, causing pain or weakness. The most common area for spondylolisthesis to occur is within the bottom level of the lumbar spine between L5-S1.
Where does L5-S1 cause pain?
Common Symptoms and Signs Stemming from L5-S1 Typically, a dull ache or sharp pain may be felt in the lower back. Discogenic pain is typically worsened by prolonged sitting, standing in one place, and repetitive lifting and bending activities.
Are there any cases of traumatic L5 / S1 retrolisthesis?
We herein report a case of traumatic retrolisthesis of L5 and extruded disc. A 22 year-old patient presented with lower extremity weakness due to L5/S1 retrolisthesis and traumatic acute L5/S1 disc extrusion after falling of 8 meters height.
How is posterior fusion of L5-S1 performed?
A wide posterior spinal decompression is performed by carefully removing the L5 mobile lamina and the ligamentum flavum using sequential Kerrison rongeurs. The dural sac and the L5 and S1 nerve roots are identified. 5. Reduction The inferior facet of L5 and part of the S1 superior facet is removed bilaterally to give access to the L5-S1 disk space.
Is the L5 pedicle distal to the pelvis?
The goals of the surgical management are: In some cases (in high grades) where a more rigid instrumentation is needed, the fusion can be extended proximally to L4 and distally to Pelvis. Due to the distorted anatomy care must be taken to confirm correct fusion levels. Typically the L5 pedicle is extremely anterior, hidden beneath the sacral alar.
Where is the fusion of the L5 pedicle?
Due to the distorted anatomy care must be taken to confirm correct fusion levels. Typically the L5 pedicle is extremely anterior, hidden beneath the sacral alar. Intraoperative fluoroscopy or spinal navigation is used to facilitate identification of correct levels. 2. Prepartation and approach