Comparing Short-Term Outcomes of iLESSYS(®) Delta System vs Bilateral Laminotomy in 80 Degenerative Lumbar Spinal Stenosis Patients: A Single-Center Study

BACKGROUND: Degenerative lumbar spinal stenosis (DLSS) is marked by intermittent neurogenic claudication, lower back pain, and lower extremity paresthesia, affecting 11% of adults. It is traditionally treated with invasive surgery. Minimally invasive techniques, like the iLESSYS(®) Delta system, have emerged as alternatives. This study compares short-term patient outcomes between the iLESSYS(®) Delta system and conventional bilateral laminotomy in 80 DLSS patients. MATERIAL/METHODS: In this study, we selected 80 patients with DLSS. Forty received treatment with the iLESSYS(®) Delta system, while the other 40 underwent bilateral laminotomy. We monitored these patients for one year, comparing data on incision length, operation time, intraoperative blood loss, hospitalization duration, postoperative complications, visual analog scale (VAS), Oswestry Disability Index (ODI) at various time points after surgery, and Modified Macnab evaluation criteria. RESULTS: The incision length, intraoperative blood loss, and hospitalization time were significantly better in Group A than in group B (P<0.05). However, group B had a shorter operation time with statistically significant differences (P<0.05). Both groups showed significant improvements in VAS and ODI after surgery. Group A had lower VAS and ODI scores one week after surgery (P<0.05). The excellent rate of modified MacNab criteria showed no significant difference between groups A and B (P>0.05). CONCLUSIONS: The iLESSYS(®) Delta system can effectively treat DLSS and promote faster patient recovery.