Decompression without Fusion for Lumbar Spinal Stenosis at a Single Mobile Segment in Adults with Ankylosing Spondylitis

This report details the cases of 2 older male patients with ankylosing spondylitis (AS) who presented with lumbar spinal stenosis at a single residual mobile segment and were treated with decompression without fusion. Both patients presented with severe symptoms in their lower limbs and opted to proceed with surgery.With autofusion above and below their single, stable mobile segment, decompression without fusion was a safe and effective procedure. A Coflex device was implanted in 1 patient. After successful surgery, both patients experienced significantly decreased symptoms.