L5-s1 Fusion
L5-s1 Fusion - Related Videos
02:14
Full Endoscopic Interlaminar Approach for Paracentral L5-S1 Disc Herniation
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2023
Here, we present a protocol to describe the full endoscopic interlaminar approach (FEILA) technique, including every cutoff step required to reach technical proficiency. FEILA is a surgery with a relatively steep learning adaptation. Despite this, any surgeon capable of microdiscectomy can perform FEILA with enough practice and suitable patient selection.
07:44
Transforaminal Full-Endoscopic Lumbar Foraminotomy Under Local Anesthesia for L5/S1 Adjacent Segment Foraminal Stenosis
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Cited by 1 •
2025
This protocol provides a step-by-step guide for performing transforaminal full-endoscopic foraminotomy under local anesthesia. This motion-preserving technique is presented as a minimally invasive surgical alternative to fusion extension for treating L5/S1 foraminal stenosis in patients with adjacent segment disease.
10:09
Transtubular Endoscopic Posterolateral Decompression for L5-S1 Lumbar Lateral Disc Herniation
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Cited by 3 •
2022
Presented here is a novel technique of C-arm free transtubular posterolateral decompression for lumbar foraminal stenosis and lateral disc herniation under O-arm navigation.
02:45
Nuclear Fusion
0 Views •
2020
The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons. A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
09:19
Analysis of SNARE-mediated Membrane Fusion Using an Enzymatic Cell Fusion Assay
0 Views •
2012
We have developed a cell fusion assay that quantifies SNARE-mediated membrane fusion events by activated expression of β-galactosidase.
FAQs
The operation combines biological and mechanical stabilization. Removing the damaged disc creates space for bone graft, with an interbody cage used in some cases to occupy that space. Screws and rods hold the L5-S1 segment in alignment while bone grows across it. The cage and graft support the fusion process, whereas the instrumentation maintains stability during that transition.
Pain can arise from movement at a damaged or unstable segment. By joining L5 to S1, the procedure limits that motion and can reduce pain associated with the treated level. The tradeoff is permanent loss of movement there, so the goal is not to preserve motion but to exchange painful instability for greater stability and function.
Initial stability and long-term fusion are related but different stages. Screws and rods maintain alignment while the graft, with an interbody cage in some cases, supports formation of new bone across the treated segment. The lasting result depends on that bone bridging the level, rather than on instrumentation alone. This distinction explains why stabilization and biological healing both matter.
A typical sequence begins with removal of the damaged intervertebral disc. Bone graft is then placed between the vertebrae, sometimes with an interbody cage, and screws and rods are added to maintain alignment. The segment remains supported while new bone forms across it. Thus, the procedure combines disc removal, space filling, fixation, and eventual bony bridging.
Potential clinical contexts include degenerative disc disease, spondylolisthesis, spinal instability, and recurrent symptoms after other treatments have failed. The relevant question is whether the persistent problem is associated with the L5-S1 segment and whether stabilizing it could improve function. Because fusion permanently limits motion, clinicians rely on careful patient selection rather than applying the procedure to every case.
The intended benefits are reduced painful motion, greater stability, and improved function at the treated region. These gains must be considered alongside the permanent reduction in movement at L5-S1. Fusion therefore aims to improve how the lumbosacral junction functions overall, not to preserve normal motion at the fused level. This balance is central to evaluating its clinical value.