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INITIAL OUTCOMES OF UNILATERAL BIPORTAL ENDOSCOPIC TRANSFORAMINAL LUMBUR INTERBODY FUSION IN THE TREATMENT OF LUMBAR STENOSIS WITH SEGMENTAL INSTABILITY
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Abstract
Background: Spinal decompression combined with interbody fusion is indicated for treatment of cases of spinal stenosis with instability that fail conservative treatment. Unilateral biportal endoscopic transforaminal lumbar interbody fusion (ULIF) is one of the minimally invasive techniques that is increasingly receiving attention and development with many advantages compared to traditional open surgery in the treatment of unstable lumbar spinal stenosis. This study described the technique and initial results of ULIF in the treatment of one level lumbar stenosis with segmental instability. Method: This is a prospective study, describing a series of cases, surveying 11 patients treated with ULIF in the treatment of one level lumbar stenosis with segmental instability at the University of Medicine and Pharmacy Hospital from January 2023 to December 2023. Preoperative back and leg visual analog scale (VAS-B and VAS-L, respectively) scores, the Oswestry Disability Index (ODI) and radiographic data were recorded and compared with corresponding values on 1 week, 1 month, 2 month, 3 month follow-up. Result: 11 patients (8 women, 3 men) with average age 60,2 ± 10,9 with one level lumbar stenosis with segmental instability who failed conservative treatment underwent ULIF. The mean VAS-B decreased from 6,55 ± 2,02 to 1,36 ± 0,81 and the mean VAS-L decreased from 7,45 ± 1,29 points to 1,00 ± 0,77 points. The mean ODI score improved significantly from 67,36 ± 16,70 % before surgery to 23,45 ± 9,64 %. Disc height (DH) improved from 6,73 ± 2,76 mm to 10,82 ± 1,78 mm, disc angle (DA) improved from 2,73 ± 2,280 to 5,55 ± 4,800. No complications related to surgery were recorded. Conclusion: ULIF initially showed effectiveness and safety in the treatment of one level lumbar stenosis with segmental instability.
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References
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