Related Experiment Video
Updated: Feb 27, 2026
05:42
Full-Endoscopic Isolation Zone Technique for the Treatment of Lumbar Disc Herniation
Published on: April 7, 2023
1.4K
Downward Laminotomy Technique for Hidden Zone Foraminal Disk Herniations: Technical Notes and Preliminary Results
1Department of Neurosurgery, Health Sciences University, Umraniye Teaching and Research Hospital, Istanbul, Turkey.
Clinical Spine Surgery
|June 27, 2017
Summary
Downward laminotomy offers a safe and minimally invasive surgical approach for rare hidden zone foraminal herniations. This technique effectively resolves nerve pain and improves patient outcomes.
Area of Science:
- Neurosurgery
- Spinal Surgery
- Orthopedic Surgery
Background:
- Hidden zone foraminal herniations are uncommon spinal conditions.
- Surgical access to these herniations is challenging due to the proximity of nerve roots and pedicles.
- Various surgical techniques have been developed to address these challenges.
Purpose of the Study:
- To introduce and describe downward laminotomy as a novel surgical approach.
- To evaluate the efficacy and safety of downward laminotomy for hidden zone foraminal herniations.
Main Methods:
- A downward laminotomy technique was employed in five patients.
- Patients presented with hidden zone foraminal disk herniation without extension into the intervertebral disk space.
- The herniations were located at L4-L5 in four cases and L3-L4 in one case.
Main Results:
- Postoperative visual analog scale (VAS) pain scores significantly decreased from a mean of 8.2 to 2.1.
- Allodynia, a common symptom, resolved within two months following surgery.
- The procedure demonstrated successful decompression and symptom relief.
Conclusions:
- Downward laminotomy is a safe and effective surgical option.
- This technique offers a less risky and minimally invasive alternative for treating hidden zone foraminal herniations.
- The study supports downward laminotomy as a valuable addition to the surgical armamentarium for this specific condition.
