Full-Endoscopic Interlaminar Approach for Decompression of Lateral Recess Stenosis
February 24th, 2023
Technical advances and increased experience in full-endoscopic spinal surgeries enable these procedures to be performed with minimal incision, muscle retraction, and bone removal.
To begin, remove the soft tissues, mainly the paraspinal muscles, using the rongeur. Remove the superficial layer of the ligamentum flavum with a 5.4-millimeter punch for a total exposure of the descending facet. To expose the ascending facet, use the 5.5-millimeters oval bur with lateral protection and remove the bone from the medial side of the descending facet from its inferior tip.
Use the oval bur with lateral protection again for thinning the ascending facet so that the total removal can be achieved by the Kerrison punch. Use the Kerrison punch for further bone removal toward the lateral, then resect the ligamentum flavum using the punch from the midline toward the lateral. Ensure that the ligamentum flavum is removed from medial to lateral and cranial to caudal to visualize the lateral recess completely.
Then, using the rongeur, cautiously remove the epidural fat tissue until adequate exposure to the neural structures is obtained. Mobilize the nerve root medially using the dissector to relieve it from any adhesions. Address any discopathy contributing to the lateral recess stenosis.
Medialize the nerve root using the dissector or turn the long side of the working sleeve. Achieve decompression by resecting half of the pedicle and the ligamentum flavum at the lateral recess. The preoperative sagittal and axial magnetic resonance images show right-sided lateral recess stenosis.
Postoperative images confirm the resolution of this finding.
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Overview
This article discusses the technical advances in full-endoscopic spinal surgeries, highlighting the ability to perform these procedures with minimal incision and muscle retraction. The focus is on the methods used to expose and remove bone and soft tissue effectively.
Key Study Components
Area of Science
- Neurosurgery
- Spinal surgery techniques
- Endoscopic procedures
Background
- Full-endoscopic spinal surgeries have evolved significantly.
- Minimally invasive techniques reduce recovery time.
- Understanding the anatomy is crucial for successful outcomes.
- Technical skills are essential for effective bone and tissue removal.
Purpose of Study
- To demonstrate the techniques for effective exposure in spinal surgeries.
- To outline the steps for removing soft tissues and bone.
- To enhance the understanding of full-endoscopic procedures.
Methods Used
- Use of rongeur to remove paraspinal muscles.
- Application of a 5.4-millimeter punch for ligamentum flavum removal.
- Utilization of a 5.5-millimeter oval bur for bone thinning.
- Employing the Kerrison punch for precise bone removal.
Main Results
- Successful exposure of the descending and ascending facets.
- Effective removal of the ligamentum flavum.
- Visualization of the lateral recess achieved.
- Demonstrated techniques can improve surgical outcomes.
Conclusions
- Minimally invasive techniques are effective in spinal surgery.
- Technical proficiency is vital for successful procedures.
- Continued advancements will enhance surgical practices.
