Minimally Invasive Lumbar Decompression and Interspinous Process Device for the Management of Symptomatic Lumbar Spinal Stenosis: a Literature Review

Abstract

Symptomatic lumbar spinal stenosis (LSS) is a condition affecting a growing number of individuals resulting in significant disability and pain. Traditionally, treatment options have consisted of conservative measures such as physical therapy, medication management, epidural injections and percutaneous adhesiolysis, or surgery. There exists a treatment gap for patients failing conservative measures who are not candidates for surgery. Minimally invasive lumbar decompression (MILD®) and interspinous process device (IPD) with Superion® represent minimally invasive novel treatment options that may help fill this gap in management. We performed a literature review to separately evaluate these procedures and assess the effectiveness and safety. The available evidence for MILD and Superion has been continuously debated. Overall, it is considered that while the procedures are safe, there is only modest evidence for effectiveness. For both procedures, we have reviewed 13 studies. Based on the available evidence, MILD and Superion are safe and modestly effective minimally invasive procedures for patients with symptomatic LSS.It is our recommendation that these procedures may be incorporated as part of the continuum of treatment options for patients meeting clinicalcriteria.