Clinical evaluation of the preliminary safety and effectiveness of a minimally invasive interspinous process device APERIUS(®) in degenerative lumbar spinal stenosis with symptomatic neurogenic intermittent claudication.

Purpose New interspinous process decompression devices (IPDs) provide an alternative to conservative treatment and decompressive surgery for patients with neurogenic intermittent claudication (NIC) due to degenerative lumbar spinal stenosis (DLSS). APERIUS® is a minimally invasive IPD that can be implanted percutaneously. This multicentre prospective study was designed to make a preliminary evaluation of safety and effectiveness of this IPD up to 12 months post-implantation.