Foreign body reaction due to polyethylene's wear after implantation of an interspinal segment.

Different interspinous implants are used as minimal invasive intervention in the management of degenerative disorders of the lumbar spine. We present a case with foreign body reaction due to polyethylene's wear after a device for intervertebral assisted motion (DIAM) implantation. We conclude that the polyethylene interspinous devices can cause biological response, therefore; the surgeons and the companies should carefully watch their patients following application of such devices.