Related Experiment Video
Updated: May 6, 2026
Author Spotlight: Scope of LE-ULBD as a Safe, Effective, and Minimally Invasive Approach to Treat Lumbar Spinal Stenosis
Published on: February 9, 2024
"ULTRA" Lateral Decompression Technique for Lumbar Discectomy: An Evaluation of 30-Day Outcomes From an 8-Year Single
Stefan A Mindea1, Artsiom Klimko2, Fevzy Ghiuve-Osman3
1American NeuroSurgical Institute, Constata, Romania smindea@yahoo.com.
Background:
Traditional midline microdiscectomy risks paraspinal muscle devascularization/denervation, particularly of the multifidus. We evaluated a standardized lateral-to-spinous Wiltse-interval tubular microdiscectomy (ULTRA, fixed 10-mm tube) designed to minimize muscle injury while maintaining microscopic control. We report 30-day safety and early functional outcomes from an 8-year, single-surgeon series.
Methods:
We performed a retrospective analysis of a prospectively maintained, single-center registry of consecutive single-level lumbar discectomies (L2-L3 to L5-S1) undertaken from January 2017 to May 2024 using a fixed 10-mm tubular retractor through the lateral-to-spinous Wiltse corridor under microscopy. Primary endpoints were 30-day complications, readmissions, and reoperations; secondary endpoints included operative time, length of stay, same-day discharge, and change in Oswestry Disability Index (ODI). The study was Institutional Review Board approved, and consent was waived.
Results:
A total of 973 procedures were analyzed (mean age 49 ± 12 years; 54.5% men; body mass index ≥30 kg/m² in 24.2%; 29.6% smokers; 6.8% diabetes). Mean operative time was 18 ± 5 minutes; 96.3% finished in <30 minutes. Same-day discharge occurred in 99.8% (971/973). Intraoperative dural tear occurred in 7.3% (71/973) and was primarily repaired; postoperative cerebrospinal fluid fistula occurred in 0.7% (7/973). No surgical site infections or epidural hematomas were observed. The 30-day readmission rate was 0.7% (7/973), and reoperation for recurrent herniation was 0.3% (3/973). Mean ODI improved from 74 ± 9 preoperatively to 18 ± 7 at 30 days (Δ56, P < 0.001). Unadjusted ODI at 30 days did not differ between patients with or without complications (P = 0.709); in adjusted models, any complication was associated with a modestly smaller ΔODI (P = 0.033).
Conclusions:
A 10-mm lateral-to-spinous (Wiltse) tubular approach enables rapid decompression with low early morbidity and large early functional gains. Properly repaired intraoperative dural tears did not worsen short-term outcomes.
Clinical Relevance:
Findings support routine outpatient use of a 10-mm Wiltse corridor for lumbar disc herniation and provide benchmark 30-day rates for counseling and quality assurance.
Insights
A minimally invasive tubular microdiscectomy using the Wiltse corridor offers rapid lumbar decompression with low complication rates. This approach leads to significant early functional improvement in patients with disc herniation.
Area of Science:
- Neurosurgery
- Spinal Surgery
- Minimally Invasive Spine Surgery
Background:
- Traditional midline microdiscectomy can cause paraspinal muscle damage.
- The Wiltse-interval tubular microdiscectomy (ULTRA) aims to minimize muscle injury.
- This study reports safety and functional outcomes of the ULTRA approach.
Purpose of the Study:
- To evaluate the 30-day safety and early functional outcomes of a standardized lateral-to-spinous Wiltse-interval tubular microdiscectomy (ULTRA).
- To assess complications, readmissions, reoperations, operative time, length of stay, same-day discharge, and Oswestry Disability Index (ODI) changes.
Main Methods:
- Retrospective analysis of a prospectively maintained registry of 973 single-level lumbar microdiscectomies.
- Utilized a fixed 10-mm tubular retractor through the Wiltse corridor under microscopy.
- Primary endpoints: 30-day complications, readmissions, reoperations. Secondary endpoints: operative time, length of stay, ODI.
Main Results:
- Mean operative time was 18 minutes, with 96.3% completed in under 30 minutes.
- 99.8% of patients were discharged the same day.
- Low rates of intraoperative dural tear (7.3%), postoperative CSF fistula (0.7%), readmission (0.7%), and reoperation (0.3%).
- Mean ODI improved significantly from 74 to 18 at 30 days.
Conclusions:
- The 10-mm Wiltse tubular approach allows for rapid decompression with minimal early morbidity.
- Significant functional gains (ODI improvement) were observed within 30 days.
- Repaired dural tears did not negatively impact short-term outcomes, supporting outpatient use.
