950 - Effectiveness of Minimally Invasive Lumbar Decompression (MILD procedure) in severe lumbar spinal stenosis. Study of improvement of walking and standing tolerance

Objectives: Evaluate functional gain, walking and standing tolerance in the patient's with severe spinal stenosis following Minimally Invasive Lumbar, decompression (MILD procedure)  .

Design: Prospective, single-arm cohort study

Results: From 2020-2023, total of 300 minimally invasive lumbar decompression was performed in an ambulatory surgical center setting to treat variable degree of MILD procedure is designed for spinal stenosis and neurogenic claudication symptom.   This procedure has been designed for moderate spinal stenosis.  In our group of patient, 80 patient's had severe spinal stenosis and were treated. The tolerance to standing and walking in minutes were documented prior to procedure along with ODI and claudication index.  Patient was followed in 2 weeks, 6 weeks, 12 weeks and we studied the effectiveness of the mild procedure at 12 weeks mark and walking and standing tolerance.  Large group of patients were followed up to 2 year by the time of this abstract.  We compared the result of our data to effectiveness of a mild procedure for treatment of Mild-Moderate spinal stenosis previously published.

Conclusions: At the time of abstract presentation, preliminary data analysis demonstrates statistical significant improvement in walking and standing tolerance at 12 weeks mark following minimally, invasive lumbar, decompression known as MILD procedure.  There was no complication with the procedure and procedure was tolerated and patient is as old as 96 years old.  Only a handful of patients required conversion to traditional laminectomy.  Upon completion of the study, we tend to present MILD procedure as a viable solution for patients with severe spinal stenosis who either have been aged out for laminectomy, or opt not to consider major lumbar surgery and prefer a minimally invasive approach without the need for general anesthesia.   On average, patients were able to increase their walking tolerance up to 5-fold of the baseline.