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Transtubular Endoscopic Posterolateral Decompression for L5-S1 Lumbar Lateral Disc Herniation
Published on: October 14, 2022
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Revisional Endoscopic Foraminal Decompression via Modified Interlaminar Approach at L5-S1 after Failed Posterior
Zheng Cao1, Zhenzhou Li1, Hongliang Zhao1
1Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, Beijing 100048, China.
Bioengineering (Basel, Switzerland)
|September 28, 2023
Summary
Full-endoscopic lumbar decompression (FELD) effectively treats L5-S1 foraminal stenosis after posterior instrumented lumbar fusion in elderly patients. This minimally invasive technique offers significant pain relief and functional improvement with excellent long-term outcomes.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Minimally Invasive Spine Surgery
Background:
- Elderly patients face higher risks and complications during revision surgery after posterior instrumented lumbar fusion (PILF).
- Treating L5-S1 foraminal stenosis (FS) after PILF using traditional full-endoscopic transforaminal surgery can be challenging.
- A novel approach is needed to safely and effectively manage revision FS in this population.
Purpose of the Study:
- To describe the technical details of a novel full-endoscopic lumbar decompression (FELD) technique.
- To evaluate the clinical efficacy and safety of FELD for L5-S1 FS in elderly patients post-PILF.
- To assess long-term outcomes using validated clinical scores.
Main Methods:
- Eleven elderly patients with unilateral radiculopathy post-PILF underwent FELD via a modified interlaminar approach under local anesthesia.
- Preoperative selective nerve root block was performed.
- Postoperative imaging (MRI, CT) and clinical outcomes (VAS, ODI, MacNab score) were assessed at various intervals up to two years.
Main Results:
- Complete decompression was achieved in all eleven patients without serious complications.
- Significant improvements were observed in sciatica pain (VAS), low back pain (VAS), and Oswestry disability index (ODI) postoperatively (p < 0.05).
- At two-year follow-up, 63.6% of patients achieved excellent results and 36.4% achieved good results according to MacNab criteria.
Conclusions:
- Full-endoscopic lumbar decompression (FELD) via a modified interlaminar approach is a safe and effective treatment for unilateral L5-S1 foraminal stenosis in elderly patients following PILF.
- The technique demonstrates significant clinical improvement and excellent long-term outcomes, avoiding the need for further revision surgery.
- This minimally invasive approach offers a viable solution for a challenging subset of spinal revision cases.
