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Across-the-Top-Biportal Endoscopic Spinal Surgery for Right-Sided Pathologies: Technical Note.
Mohammad A Ansari1, Faiz K Yusufi2
1Department of Neurosurgery, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
Asian Journal of Neurosurgery
|March 5, 2026
Summary
The "across-the-top" unilateral biportal endoscopic technique safely and effectively treats right-sided lumbar spinal conditions, offering excellent decompression and rapid recovery. This minimally invasive approach preserves key spinal structures for improved patient outcomes.
Area of Science:
- Minimally Invasive Spine Surgery
- Spinal Decompression Techniques
- Orthopedic Surgery
Background:
- Unilateral biportal endoscopic (UBE) surgery is a minimally invasive technique for lumbar pathologies.
- The
- This study evaluates the
- across-the-top
- contralateral decompression technique for right-sided lumbar spinal pathology.
Purpose of the Study:
- To evaluate the surgical methodology, safety, and clinical outcomes of the
- across-the-top
- UBE technique.
- To assess its efficacy in treating exclusive right-sided lumbar spinal pathologies.
Main Methods:
- Prospective observational study of 24 patients with right-sided lumbar spinal pathology.
- All patients underwent UBE decompression using the
- across-the-top
- technique.
- Standardized surgical protocol involving two paramedian incisions, port docking, decompression, and hemostasis.
Main Results:
- All surgeries were completed successfully without intraoperative complications.
- No cases of dural tears, nerve root injury, or infection were reported.
- Significant symptomatic relief was observed in most patients, with rapid recovery and early discharge.
Conclusions:
- The
- across-the-top
- UBE technique is safe, effective, and ergonomic for right-sided lumbar pathology.
- It provides excellent decompression while preserving stabilizing structures.
- The technique ensures rapid patient recovery.

