Lumbar spinal stenosis (LSS) is a condition in which the spinal canal becomes narrowed from various causes. This can cause pain in the lower back and legs, impair walking, and other forms of disability in the elderly. An increasing number of people in the aging population suffer from debilitating symptoms of LSS, great interest has focused on minimally invasive treatments.

Indirect spinal decompression via interspinous spacers is a novel technique in the management of patients with moderate LSS. The InterSpinous Spacer (ISS) is a minimally-invasive spinal implant that treats LSS by limiting spine extension at the symptomatic level that compresses the nerves. It is a highly advanced, minimally-invasive option for treating symptomatic spinal stenosis. This procedure is reversible, takes minutes to perform and was found to be as effective as spinal surgery (i.e. decompressive laminectomy) making it an outstanding alternative.