Surgical decompression with or without fusion is the surgical treatment for patients with moderate to severe lumbar spinal stenosis. Lumbar interspinous process decompression (IPD), also known as interspinous distraction or posterior spinal distraction, has been proposed as a minimally invasive alternative to laminectomy and fusion.

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The iSpace is an interspinous distraction or spacer implant made from Invibio PEEK OPTIMA (Polyetheretherketone), is inserted between the spinous process through a small (2-3cm) incision. No laminotomy, laminectomy, or foraminotomy is performed.